* [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
@ 2020-12-29 0:38 Qu Wenruo
2020-12-29 9:27 ` Stéphane Lesimple
2020-12-30 0:56 ` Qu Wenruo
0 siblings, 2 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-29 0:38 UTC (permalink / raw)
To: linux-btrfs; +Cc: Stéphane Lesimple
In delete_v1_space_cache(), if we find a leaf whose owner is tree root,
and we can't grab the free space cache inode, then we return -ENOENT.
However this would make the caller, add_data_references(), to consider
this as a critical error, and abort current data balance.
This happens for fs using free space cache v2, while still has v1 data
left.
For v2 free space cache, we no longer load v1 data, making btrfs_igrab()
no longer work for root tree to grab v1 free space cache inodes.
The proper fix for the problem is to delete v1 space cache completely
during v2 convert.
We can't just ignore the -ENOENT error, as for root tree we don't use
reloc tree to replace its data references, but rely on COW.
This means, we have no way to relocate the leftover v1 data, and block
the relocation.
This patch will just workaround it by outputting a warning message,
showing the user how to manually solve it.
Reported-by: Stéphane Lesimple <stephane_btrfs2@lesimple.fr>
Signed-off-by: Qu Wenruo <wqu@suse.com>
---
fs/btrfs/relocation.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 19b7db8b2117..42746b59268d 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3027,6 +3027,25 @@ int add_data_references(struct reloc_control *rc,
ret = delete_v1_space_cache(eb, rc->block_group,
extent_key->objectid);
free_extent_buffer(eb);
+ /*
+ * This happens when the fs is converted to use v2 space cache,
+ * but some v1 data is still left.
+ * In that case, we can't delete the v1 space cache data as we
+ * can't grab the free space cache inode anymore.
+ *
+ * And we can't ignore the error, as for root tree (where v1
+ * space cache is) we don't do reloc tree to replace the data
+ * to the new location, thus the old data will still be there,
+ * blocking the data chunk to be relocated.
+ *
+ * Here we just warn user about the problem, and provide a
+ * workaround.
+ * The proper fix is in the v2 convert mount, which should
+ * completely remove v1 data.
+ */
+ if (ret == -ENOENT)
+ btrfs_warn(fs_info,
+"leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up");
if (ret < 0)
break;
ret = __add_tree_block(rc, ref_node->val, blocksize, blocks);
--
2.29.2
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 0:38 [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance Qu Wenruo
@ 2020-12-29 9:27 ` Stéphane Lesimple
2020-12-29 10:29 ` Qu Wenruo
2020-12-29 11:08 ` Stéphane Lesimple
2020-12-30 0:56 ` Qu Wenruo
1 sibling, 2 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-29 9:27 UTC (permalink / raw)
To: Qu Wenruo, linux-btrfs
December 29, 2020 1:38 AM, "Qu Wenruo" <wqu@suse.com> wrote:
> In delete_v1_space_cache(), if we find a leaf whose owner is tree root,
> and we can't grab the free space cache inode, then we return -ENOENT.
>
> However this would make the caller, add_data_references(), to consider
> this as a critical error, and abort current data balance.
>
> This happens for fs using free space cache v2, while still has v1 data
> left.
>
> For v2 free space cache, we no longer load v1 data, making btrfs_igrab()
> no longer work for root tree to grab v1 free space cache inodes.
>
> The proper fix for the problem is to delete v1 space cache completely
> during v2 convert.
>
> We can't just ignore the -ENOENT error, as for root tree we don't use
> reloc tree to replace its data references, but rely on COW.
> This means, we have no way to relocate the leftover v1 data, and block
> the relocation.
>
> This patch will just workaround it by outputting a warning message,
> showing the user how to manually solve it.
>
> Reported-by: Stéphane Lesimple <stephane_btrfs2@lesimple.fr>
> Signed-off-by: Qu Wenruo <wqu@suse.com>
Your analysis seems correct, as this FS is quite old (several years),
and has seen quite a number of kernel versions! I converted it to
space_cache v2 ~6-12 months ago I think. It does has v1 leftovers:
# btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
What's interesting also is that a FS I created only a few weeks ago,
under kernel 5.6.17, also has v1 leftovers, as per the above command.
So the issue might be more common than we think (not just years-old FS).
Before fixing the FS I can't balance, I wanted to test your patch,
even if it's pretty straightforward, just to be sure:
# btrfs bal start -dvrange=34625344765952..34625344765953 /tank
ERROR: error during balancing '/tank': No such file or directory
There may be more info in syslog - try dmesg | tail
[ 76.114187] BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
[ 76.122792] BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
[ 87.065468] BTRFS info (device dm-10): found 167 extents, stage: move data extents
[ 87.685571] BTRFS warning (device dm-10): leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up
[ 100.018692] BTRFS info (device dm-10): balance: ended with status: -2
So, it works. You can add my Tested-By.
Regards,
Stéphane.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 9:27 ` Stéphane Lesimple
@ 2020-12-29 10:29 ` Qu Wenruo
2020-12-29 11:08 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-29 10:29 UTC (permalink / raw)
To: Stéphane Lesimple, Qu Wenruo, linux-btrfs
On 2020/12/29 下午5:27, Stéphane Lesimple wrote:
> December 29, 2020 1:38 AM, "Qu Wenruo" <wqu@suse.com> wrote:
>
>> In delete_v1_space_cache(), if we find a leaf whose owner is tree root,
>> and we can't grab the free space cache inode, then we return -ENOENT.
>>
>> However this would make the caller, add_data_references(), to consider
>> this as a critical error, and abort current data balance.
>>
>> This happens for fs using free space cache v2, while still has v1 data
>> left.
>>
>> For v2 free space cache, we no longer load v1 data, making btrfs_igrab()
>> no longer work for root tree to grab v1 free space cache inodes.
>>
>> The proper fix for the problem is to delete v1 space cache completely
>> during v2 convert.
>>
>> We can't just ignore the -ENOENT error, as for root tree we don't use
>> reloc tree to replace its data references, but rely on COW.
>> This means, we have no way to relocate the leftover v1 data, and block
>> the relocation.
>>
>> This patch will just workaround it by outputting a warning message,
>> showing the user how to manually solve it.
>>
>> Reported-by: Stéphane Lesimple <stephane_btrfs2@lesimple.fr>
>> Signed-off-by: Qu Wenruo <wqu@suse.com>
>
> Your analysis seems correct, as this FS is quite old (several years),
> and has seen quite a number of kernel versions! I converted it to
> space_cache v2 ~6-12 months ago I think. It does has v1 leftovers:
>
> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
Mind to dump all those related inodes?
E.g:
$ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
The point here is to show if we have INODE_ITEM here for the inode number.
If there is really no INODE_ITEM, but have EXTENT_DATA left, then there
is something wrong with the v1 cache deletion.
That would explain the problem you're hitting.
Either caused by kernel or btrfs-progs, we need to further pin down the
cause of course.
For any reason, this should be considered as a corruption, which is
pretty dangerous (deleting inode item without deleting all its content,
definitely a big NO-NO).
>
> What's interesting also is that a FS I created only a few weeks ago,
> under kernel 5.6.17, also has v1 leftovers, as per the above command.
> So the issue might be more common than we think (not just years-old FS).
>
> Before fixing the FS I can't balance, I wanted to test your patch,
> even if it's pretty straightforward, just to be sure:
>
> # btrfs bal start -dvrange=34625344765952..34625344765953 /tank
> ERROR: error during balancing '/tank': No such file or directory
> There may be more info in syslog - try dmesg | tail
>
> [ 76.114187] BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
> [ 76.122792] BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
> [ 87.065468] BTRFS info (device dm-10): found 167 extents, stage: move data extents
> [ 87.685571] BTRFS warning (device dm-10): leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up
Although above ins dump should work, I just want to be extra sure about
where the -ENOENT comes from.
Would you mind to test the following debug output?
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 19b7db8b2117..f7f3682ce017 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2932,8 +2932,10 @@ static int delete_block_group_cache(struct
btrfs_fs_info *fs_info,
goto truncate;
inode = btrfs_iget(fs_info->sb, ino, root);
- if (IS_ERR(inode))
+ if (IS_ERR(inode)) {
+ pr_info("%s: no inode item found for ino %llu\n",
__func__, ino);
return -ENOENT;
+ }
truncate:
ret = btrfs_check_trunc_cache_free_space(fs_info,
@@ -2986,8 +2988,11 @@ static int delete_v1_space_cache(struct
extent_buffer *leaf,
break;
}
}
- if (!found)
+ if (!found) {
+ pr_info("%s: no FILE_EXTENT found, leaf start=%llu
data_bytenr=%llu\n",
+ __func__, leaf->start, data_bytenr);
return -ENOENT;
+ }
ret = delete_block_group_cache(leaf->fs_info, block_group, NULL,
space_cache_ino);
return ret;
My guess is, the dump would show no INODE_ITEM, and the debug output
would print something like "delete_block_group_cache: no inode item
found for XXXXXX".
Thanks,
Qu
> [ 100.018692] BTRFS info (device dm-10): balance: ended with status: -2
>
> So, it works. You can add my Tested-By.
>
> Regards,
>
> Stéphane.
>
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 9:27 ` Stéphane Lesimple
2020-12-29 10:29 ` Qu Wenruo
@ 2020-12-29 11:08 ` Stéphane Lesimple
2020-12-29 11:30 ` Qu Wenruo
2020-12-29 12:30 ` Stéphane Lesimple
1 sibling, 2 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-29 11:08 UTC (permalink / raw)
To: Qu Wenruo, Qu Wenruo, linux-btrfs
December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>
> Mind to dump all those related inodes?
>
> E.g:
>
> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
# btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
ctime 1554266422.693480985 (2019-04-03 06:40:22)
otime 1547877605.465117667 (2019-01-19 07:00:05)
drop key (0 UNKNOWN.0 0) level 0
item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
generation 0 transid 1517381 size 262144 nbytes 30553407488
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1567904822.739884119 (2019-09-08 03:07:02)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
generation 1517381 type 2 (prealloc)
prealloc data disk byte 34626327621632 nr 262144
prealloc data offset 0 nr 262144
item 28 key (52262 ROOT_ITEM 0) itemoff 9415 itemsize 439
generation 2618893 root_dirid 256 bytenr 42677048360960 level 3 refs 1
lastsnap 2618893 byte_limit 0 bytes_used 5557338112 flags 0x0(none)
uuid d0d4361f-d231-6d40-8901-fe506e4b2b53
ctransid 2618893 otransid 1277275 stransid 0 rtransid 0
ctime 1609211576.181355141 (2020-12-29 04:12:56)
otime 1550343531.349394412 (2019-02-16 19:58:51)
> The point here is to show if we have INODE_ITEM here for the inode number.
I think we do, if I understand the output correctly!
> Although above ins dump should work, I just want to be extra sure about
> where the -ENOENT comes from.
>
> Would you mind to test the following debug output?
Here you go:
[ 438.260483] BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
[ 438.269018] BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
[ 450.439609] BTRFS info (device dm-10): found 167 extents, stage: move data extents
[ 451.026349] delete_v1_space_cache: no FILE_EXTENT found, leaf start=42676709441536 data_bytenr=34626327621632
[ 451.026353] BTRFS warning (device dm-10): leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up
[ 463.501781] BTRFS info (device dm-10): balance: ended with status: -2
Regards,
Stéphane.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 11:08 ` Stéphane Lesimple
@ 2020-12-29 11:30 ` Qu Wenruo
2020-12-29 12:30 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-29 11:30 UTC (permalink / raw)
To: Stéphane Lesimple, Qu Wenruo, linux-btrfs
On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>>
>> Mind to dump all those related inodes?
>>
>> E.g:
>>
>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>
> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>
> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
> ctime 1554266422.693480985 (2019-04-03 06:40:22)
> otime 1547877605.465117667 (2019-01-19 07:00:05)
> drop key (0 UNKNOWN.0 0) level 0
> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
> generation 0 transid 1517381 size 262144 nbytes 30553407488
> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
> atime 0.0 (1970-01-01 01:00:00)
> ctime 1567904822.739884119 (2019-09-08 03:07:02)
> mtime 0.0 (1970-01-01 01:00:00)
> otime 0.0 (1970-01-01 01:00:00)
> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
> generation 1517381 type 2 (prealloc)
> prealloc data disk byte 34626327621632 nr 262144
> prealloc data offset 0 nr 262144
> item 28 key (52262 ROOT_ITEM 0) itemoff 9415 itemsize 439
> generation 2618893 root_dirid 256 bytenr 42677048360960 level 3 refs 1
> lastsnap 2618893 byte_limit 0 bytes_used 5557338112 flags 0x0(none)
> uuid d0d4361f-d231-6d40-8901-fe506e4b2b53
> ctransid 2618893 otransid 1277275 stransid 0 rtransid 0
> ctime 1609211576.181355141 (2020-12-29 04:12:56)
> otime 1550343531.349394412 (2019-02-16 19:58:51)
>
>> The point here is to show if we have INODE_ITEM here for the inode number.
>
> I think we do, if I understand the output correctly!
>
>> Although above ins dump should work, I just want to be extra sure about
>> where the -ENOENT comes from.
>>
>> Would you mind to test the following debug output?
>
> Here you go:
>
> [ 438.260483] BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
> [ 438.269018] BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
> [ 450.439609] BTRFS info (device dm-10): found 167 extents, stage: move data extents
> [ 451.026349] delete_v1_space_cache: no FILE_EXTENT found, leaf start=42676709441536 data_bytenr=34626327621632
This means the leaf returned by find_all_leafs() is not correct?!
Would you please try this one? (Need to clean up previous diff first):
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 19b7db8b2117..c4baffa78c0b 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2932,8 +2932,10 @@ static int delete_block_group_cache(struct
btrfs_fs_info *fs_info,
goto truncate;
inode = btrfs_iget(fs_info->sb, ino, root);
- if (IS_ERR(inode))
+ if (IS_ERR(inode)) {
+ pr_info("%s: no inode item found for ino %llu\n",
__func__, ino);
return -ENOENT;
+ }
truncate:
ret = btrfs_check_trunc_cache_free_space(fs_info,
@@ -2986,8 +2988,12 @@ static int delete_v1_space_cache(struct
extent_buffer *leaf,
break;
}
}
- if (!found)
+ if (!found) {
+ pr_info("%s: no FILE_EXTENT found, leaf start=%llu
data_bytenr=%llu\n",
+ __func__, leaf->start, data_bytenr);
+ btrfs_print_leaf(leaf);
return -ENOENT;
+ }
ret = delete_block_group_cache(leaf->fs_info, block_group, NULL,
space_cache_ino);
return ret;
Thanks,
Qu
> [ 451.026353] BTRFS warning (device dm-10): leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up
> [ 463.501781] BTRFS info (device dm-10): balance: ended with status: -2
>
> Regards,
>
> Stéphane.
>
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 11:08 ` Stéphane Lesimple
2020-12-29 11:30 ` Qu Wenruo
@ 2020-12-29 12:30 ` Stéphane Lesimple
2020-12-29 12:41 ` Qu Wenruo
2020-12-29 12:51 ` Stéphane Lesimple
1 sibling, 2 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-29 12:30 UTC (permalink / raw)
To: Qu Wenruo, Qu Wenruo, linux-btrfs
December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>
>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>>> Mind to dump all those related inodes?
>>>
>>> E.g:
>>>
>>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>
>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>> drop key (0 UNKNOWN.0 0) level 0
>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>> atime 0.0 (1970-01-01 01:00:00)
>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>> mtime 0.0 (1970-01-01 01:00:00)
>> otime 0.0 (1970-01-01 01:00:00)
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> generation 1517381 type 2 (prealloc)
>> prealloc data disk byte 34626327621632 nr 262144
>> prealloc data offset 0 nr 262144
>> item 28 key (52262 ROOT_ITEM 0) itemoff 9415 itemsize 439
>> generation 2618893 root_dirid 256 bytenr 42677048360960 level 3 refs 1
>> lastsnap 2618893 byte_limit 0 bytes_used 5557338112 flags 0x0(none)
>> uuid d0d4361f-d231-6d40-8901-fe506e4b2b53
>> ctransid 2618893 otransid 1277275 stransid 0 rtransid 0
>> ctime 1609211576.181355141 (2020-12-29 04:12:56)
>> otime 1550343531.349394412 (2019-02-16 19:58:51)
>>
>>> The point here is to show if we have INODE_ITEM here for the inode number.
>>
>> I think we do, if I understand the output correctly!
>>
>>> Although above ins dump should work, I just want to be extra sure about
>>> where the -ENOENT comes from.
>>>
>>> Would you mind to test the following debug output?
>>
>> Here you go:
>>
>> [ 438.260483] BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
>> [ 438.269018] BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
>> [ 450.439609] BTRFS info (device dm-10): found 167 extents, stage: move data extents
>> [ 451.026349] delete_v1_space_cache: no FILE_EXTENT found, leaf start=42676709441536
>> data_bytenr=34626327621632
>
> This means the leaf returned by find_all_leafs() is not correct?!
>
> Would you please try this one? (Need to clean up previous diff first):
Sure:
BTRFS info (device dm-10): balance: start -dvrange=34625344765952..34625344765953
BTRFS info (device dm-10): relocating block group 34625344765952 flags data|raid1
BTRFS info (device dm-10): found 167 extents, stage: move data extents
delete_v1_space_cache: no FILE_EXTENT found, leaf start=42677482782720 data_bytenr=34626327621632
BTRFS info (device dm-10): leaf 42677482782720 gen 2619699 total ptrs 38 free space 6595 owner 1
item 0 key (32735 132 726935) itemoff 15844 itemsize 439
root data bytenr 42705449844736 refs 1
item 1 key (32735 144 5) itemoff 15802 itemsize 42
item 2 key (32736 132 726938) itemoff 15363 itemsize 439
root data bytenr 42705450303488 refs 1
item 3 key (32736 144 5) itemoff 15320 itemsize 43
item 4 key (34615 132 802086) itemoff 14881 itemsize 439
root data bytenr 42705443913728 refs 1
item 5 key (34615 144 5) itemoff 14839 itemsize 42
item 6 key (34616 132 802088) itemoff 14400 itemsize 439
root data bytenr 42705445797888 refs 1
item 7 key (34616 144 5) itemoff 14357 itemsize 43
item 8 key (34688 132 804349) itemoff 13918 itemsize 439
root data bytenr 42697575448576 refs 1
item 9 key (34688 144 5) itemoff 13874 itemsize 44
item 10 key (40681 132 0) itemoff 13435 itemsize 439
root data bytenr 42705844584448 refs 1
item 11 key (40681 144 5) itemoff 13414 itemsize 21
item 12 key (46589 132 0) itemoff 12975 itemsize 439
root data bytenr 42705856479232 refs 1
item 13 key (46589 144 5) itemoff 12948 itemsize 27
item 14 key (50759 132 1239367) itemoff 12509 itemsize 439
root data bytenr 42705450270720 refs 1
item 15 key (50759 144 5) itemoff 12468 itemsize 41
item 16 key (50892 132 1243531) itemoff 12029 itemsize 439
root data bytenr 42705448812544 refs 1
item 17 key (50892 144 5) itemoff 11988 itemsize 41
item 18 key (50950 132 1245041) itemoff 11549 itemsize 439
root data bytenr 42705448779776 refs 1
item 19 key (50950 144 5) itemoff 11508 itemsize 41
item 20 key (51007 132 1246989) itemoff 11069 itemsize 439
root data bytenr 42705447649280 refs 1
item 21 key (51007 144 5) itemoff 11028 itemsize 41
item 22 key (51068 132 1248396) itemoff 10589 itemsize 439
root data bytenr 42705450156032 refs 1
item 23 key (51068 144 5) itemoff 10548 itemsize 41
item 24 key (51098 132 1249372) itemoff 10109 itemsize 439
root data bytenr 42705449811968 refs 1
item 25 key (51098 144 5) itemoff 10067 itemsize 42
item 26 key (51933 1 0) itemoff 9907 itemsize 160
inode generation 0 size 262144 mode 100600
item 27 key (51933 108 0) itemoff 9854 itemsize 53
extent data disk bytenr 34626327621632 nr 262144
extent data offset 0 nr 262144 ram 262144
item 28 key (52262 132 0) itemoff 9415 itemsize 439
root data bytenr 42677048360960 refs 1
item 29 key (52262 144 5) itemoff 9392 itemsize 23
item 30 key (52267 132 0) itemoff 8953 itemsize 439
root data bytenr 42705856806912 refs 1
item 31 key (52267 144 5) itemoff 8931 itemsize 22
item 32 key (52268 132 0) itemoff 8492 itemsize 439
root data bytenr 42678619897856 refs 1
item 33 key (52268 144 5) itemoff 8471 itemsize 21
item 34 key (52453 132 0) itemoff 8032 itemsize 439
root data bytenr 42705323196416 refs 1
item 35 key (52453 144 5) itemoff 8011 itemsize 21
item 36 key (58841 132 0) itemoff 7572 itemsize 439
root data bytenr 42677453111296 refs 1
item 37 key (58841 144 5) itemoff 7545 itemsize 27
BTRFS warning (device dm-10): leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up
BTRFS info (device dm-10): balance: ended with status: -2
Regards,
Stéphane.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 12:30 ` Stéphane Lesimple
@ 2020-12-29 12:41 ` Qu Wenruo
2020-12-29 12:51 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-29 12:41 UTC (permalink / raw)
To: Stéphane Lesimple, Qu Wenruo, linux-btrfs
On 2020/12/29 下午8:30, Stéphane Lesimple wrote:
> December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>
>> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>>
>>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>>>> Mind to dump all those related inodes?
>>>>
>>>> E.g:
>>>>
>>>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>>
>>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>>> drop key (0 UNKNOWN.0 0) level 0
>>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>>> atime 0.0 (1970-01-01 01:00:00)
>>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>>> mtime 0.0 (1970-01-01 01:00:00)
>>> otime 0.0 (1970-01-01 01:00:00)
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> generation 1517381 type 2 (prealloc)
>>> prealloc data disk byte 34626327621632 nr 262144
Got the point now.
The type is preallocated, which means we haven't yet written space cache
into it.
But the code only checks the regular file extent (written, not
preallocated).
So the proper fix would looks like this:
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 19b7db8b2117..1d73d7c2fbd7 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2975,11 +2975,14 @@ static int delete_v1_space_cache(struct
extent_buffer *leaf,
return 0;
for (i = 0; i < btrfs_header_nritems(leaf); i++) {
+ u8 type;
btrfs_item_key_to_cpu(leaf, &key, i);
if (key.type != BTRFS_EXTENT_DATA_KEY)
continue;
ei = btrfs_item_ptr(leaf, i, struct
btrfs_file_extent_item);
- if (btrfs_file_extent_type(leaf, ei) ==
BTRFS_FILE_EXTENT_REG &&
+ type = btrfs_file_extent_type(leaf, ei);
+ if ((type == BTRFS_FILE_EXTENT_REG ||
+ type == BTRFS_FILE_EXTENT_PREALLOC) &&
btrfs_file_extent_disk_bytenr(leaf, ei) ==
data_bytenr) {
found = true;
space_cache_ino = key.objectid;
With this, the relocation should finish without problem.
Thanks for all your effort, from reporting to most of the debug, this
really helps a lot!
Qu
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 12:30 ` Stéphane Lesimple
2020-12-29 12:41 ` Qu Wenruo
@ 2020-12-29 12:51 ` Stéphane Lesimple
2020-12-29 13:06 ` Qu Wenruo
2020-12-29 13:17 ` Stéphane Lesimple
1 sibling, 2 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-29 12:51 UTC (permalink / raw)
To: Qu Wenruo, Qu Wenruo, linux-btrfs
December 29, 2020 1:43 PM, "Qu Wenruo" <wqu@suse.com> wrote:
> On 2020/12/29 下午8:30, Stéphane Lesimple wrote:
>
>> December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>
>>> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>>
>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>> Mind to dump all those related inodes?
>>
>> E.g:
>>
>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>
>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>> drop key (0 UNKNOWN.0 0) level 0
>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>> atime 0.0 (1970-01-01 01:00:00)
>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>> mtime 0.0 (1970-01-01 01:00:00)
>> otime 0.0 (1970-01-01 01:00:00)
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> generation 1517381 type 2 (prealloc)
>> prealloc data disk byte 34626327621632 nr 262144
>
> Got the point now.
>
> The type is preallocated, which means we haven't yet written space cache
> into it.
>
> But the code only checks the regular file extent (written, not
> preallocated).
>
> So the proper fix would looks like this:
>
> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
> index 19b7db8b2117..1d73d7c2fbd7 100644
> --- a/fs/btrfs/relocation.c
> +++ b/fs/btrfs/relocation.c
> @@ -2975,11 +2975,14 @@ static int delete_v1_space_cache(struct
> extent_buffer *leaf,
> return 0;
>
> for (i = 0; i < btrfs_header_nritems(leaf); i++) {
> + u8 type;
> btrfs_item_key_to_cpu(leaf, &key, i);
> if (key.type != BTRFS_EXTENT_DATA_KEY)
> continue;
> ei = btrfs_item_ptr(leaf, i, struct
> btrfs_file_extent_item);
> - if (btrfs_file_extent_type(leaf, ei) ==
> BTRFS_FILE_EXTENT_REG &&
> + type = btrfs_file_extent_type(leaf, ei);
> + if ((type == BTRFS_FILE_EXTENT_REG ||
> + type == BTRFS_FILE_EXTENT_PREALLOC) &&
> btrfs_file_extent_disk_bytenr(leaf, ei) ==
> data_bytenr) {
> found = true;
> space_cache_ino = key.objectid;
>
> With this, the relocation should finish without problem.
Aaah, it makes sense indeed.
Do you want me to try this fix right now, or do you want to have a look
at the btrfs-progs crash first? I don't know if it's related, but if it is,
then maybe I won't be able to reproduce it again after finishing the balance.
I don't mind leaving the FS in this state for a few more days/weeks if needed.
> Thanks for all your effort, from reporting to most of the debug, this
> really helps a lot!
No problem, glad to help. Thanks for looking into it so fast!
--
Stéphane.
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 12:51 ` Stéphane Lesimple
@ 2020-12-29 13:06 ` Qu Wenruo
2020-12-29 13:17 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-29 13:06 UTC (permalink / raw)
To: Stéphane Lesimple, Qu Wenruo, linux-btrfs
On 2020/12/29 下午8:51, Stéphane Lesimple wrote:
> December 29, 2020 1:43 PM, "Qu Wenruo" <wqu@suse.com> wrote:
>
>> On 2020/12/29 下午8:30, Stéphane Lesimple wrote:
>>
>>> December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>>
>>>> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>>>
>>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>>> Mind to dump all those related inodes?
>>>
>>> E.g:
>>>
>>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>>
>>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>>> drop key (0 UNKNOWN.0 0) level 0
>>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>>> atime 0.0 (1970-01-01 01:00:00)
>>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>>> mtime 0.0 (1970-01-01 01:00:00)
>>> otime 0.0 (1970-01-01 01:00:00)
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> generation 1517381 type 2 (prealloc)
>>> prealloc data disk byte 34626327621632 nr 262144
>>
>> Got the point now.
>>
>> The type is preallocated, which means we haven't yet written space cache
>> into it.
>>
>> But the code only checks the regular file extent (written, not
>> preallocated).
>>
>> So the proper fix would looks like this:
>>
>> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
>> index 19b7db8b2117..1d73d7c2fbd7 100644
>> --- a/fs/btrfs/relocation.c
>> +++ b/fs/btrfs/relocation.c
>> @@ -2975,11 +2975,14 @@ static int delete_v1_space_cache(struct
>> extent_buffer *leaf,
>> return 0;
>>
>> for (i = 0; i < btrfs_header_nritems(leaf); i++) {
>> + u8 type;
>> btrfs_item_key_to_cpu(leaf, &key, i);
>> if (key.type != BTRFS_EXTENT_DATA_KEY)
>> continue;
>> ei = btrfs_item_ptr(leaf, i, struct
>> btrfs_file_extent_item);
>> - if (btrfs_file_extent_type(leaf, ei) ==
>> BTRFS_FILE_EXTENT_REG &&
>> + type = btrfs_file_extent_type(leaf, ei);
>> + if ((type == BTRFS_FILE_EXTENT_REG ||
>> + type == BTRFS_FILE_EXTENT_PREALLOC) &&
>> btrfs_file_extent_disk_bytenr(leaf, ei) ==
>> data_bytenr) {
>> found = true;
>> space_cache_ino = key.objectid;
>>
>> With this, the relocation should finish without problem.
>
> Aaah, it makes sense indeed.
>
> Do you want me to try this fix right now, or do you want to have a look
> at the btrfs-progs crash first? I don't know if it's related, but if it is,
> then maybe I won't be able to reproduce it again after finishing the balance.
The problem is, I'm not that confident with v2 space cache debugging,
thus can't help much.
But at least, the problem you're reporting doesn't really need a
btrfs-check repair.
Just a kernel fix would be enough.
>
> I don't mind leaving the FS in this state for a few more days/weeks if needed.
That's fine if you want some one to look into the btrfs-progs bug.
I'll submit a proper bug fix soon.
Thanks,
Qu
>
>> Thanks for all your effort, from reporting to most of the debug, this
>> really helps a lot!
>
> No problem, glad to help. Thanks for looking into it so fast!
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 12:51 ` Stéphane Lesimple
2020-12-29 13:06 ` Qu Wenruo
@ 2020-12-29 13:17 ` Stéphane Lesimple
2020-12-30 5:49 ` Qu Wenruo
2020-12-30 8:39 ` Stéphane Lesimple
1 sibling, 2 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-29 13:17 UTC (permalink / raw)
To: Qu Wenruo, Qu Wenruo, linux-btrfs
December 29, 2020 2:08 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
> On 2020/12/29 下午8:51, Stéphane Lesimple wrote:
>
>> December 29, 2020 1:43 PM, "Qu Wenruo" <wqu@suse.com> wrote:
>>
>>> On 2020/12/29 下午8:30, Stéphane Lesimple wrote:
>>
>> December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>
>> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>>
>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>> Mind to dump all those related inodes?
>>
>> E.g:
>>
>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>
>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>
>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>> drop key (0 UNKNOWN.0 0) level 0
>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>> atime 0.0 (1970-01-01 01:00:00)
>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>> mtime 0.0 (1970-01-01 01:00:00)
>> otime 0.0 (1970-01-01 01:00:00)
>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>> generation 1517381 type 2 (prealloc)
>> prealloc data disk byte 34626327621632 nr 262144
>>> Got the point now.
>>>
>>> The type is preallocated, which means we haven't yet written space cache
>>> into it.
>>>
>>> But the code only checks the regular file extent (written, not
>>> preallocated).
>>>
>>> So the proper fix would looks like this:
>>>
>>> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
>>> index 19b7db8b2117..1d73d7c2fbd7 100644
>>> --- a/fs/btrfs/relocation.c
>>> +++ b/fs/btrfs/relocation.c
>>> @@ -2975,11 +2975,14 @@ static int delete_v1_space_cache(struct
>>> extent_buffer *leaf,
>>> return 0;
>>>
>>> for (i = 0; i < btrfs_header_nritems(leaf); i++) {
>>> + u8 type;
>>> btrfs_item_key_to_cpu(leaf, &key, i);
>>> if (key.type != BTRFS_EXTENT_DATA_KEY)
>>> continue;
>>> ei = btrfs_item_ptr(leaf, i, struct
>>> btrfs_file_extent_item);
>>> - if (btrfs_file_extent_type(leaf, ei) ==
>>> BTRFS_FILE_EXTENT_REG &&
>>> + type = btrfs_file_extent_type(leaf, ei);
>>> + if ((type == BTRFS_FILE_EXTENT_REG ||
>>> + type == BTRFS_FILE_EXTENT_PREALLOC) &&
>>> btrfs_file_extent_disk_bytenr(leaf, ei) ==
>>> data_bytenr) {
>>> found = true;
>>> space_cache_ino = key.objectid;
>>>
>>> With this, the relocation should finish without problem.
>>
>> Aaah, it makes sense indeed.
>>
>> Do you want me to try this fix right now, or do you want to have a look
>> at the btrfs-progs crash first? I don't know if it's related, but if it is,
>> then maybe I won't be able to reproduce it again after finishing the balance.
>
> The problem is, I'm not that confident with v2 space cache debugging,
> thus can't help much.
>
> But at least, the problem you're reporting doesn't really need a
> btrfs-check repair.
> Just a kernel fix would be enough.
Yes indeed.
>> I don't mind leaving the FS in this state for a few more days/weeks if needed.
>
> That's fine if you want some one to look into the btrfs-progs bug.
I'll leave it like this up to, let's say, mid-January. If nobody has expressed interest
in looking into this other problem, I'll apply your final patch and complete the balance,
so that you can add a Tested-By.
> I'll submit a proper bug fix soon.
Thanks,
Good evening!
--
Stéphane
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 0:38 [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance Qu Wenruo
2020-12-29 9:27 ` Stéphane Lesimple
@ 2020-12-30 0:56 ` Qu Wenruo
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-30 0:56 UTC (permalink / raw)
To: linux-btrfs; +Cc: Stéphane Lesimple
On 2020/12/29 上午8:38, Qu Wenruo wrote:
> In delete_v1_space_cache(), if we find a leaf whose owner is tree root,
> and we can't grab the free space cache inode, then we return -ENOENT.
>
> However this would make the caller, add_data_references(), to consider
> this as a critical error, and abort current data balance.
>
> This happens for fs using free space cache v2, while still has v1 data
> left.
>
> For v2 free space cache, we no longer load v1 data, making btrfs_igrab()
> no longer work for root tree to grab v1 free space cache inodes.
>
> The proper fix for the problem is to delete v1 space cache completely
> during v2 convert.
>
> We can't just ignore the -ENOENT error, as for root tree we don't use
> reloc tree to replace its data references, but rely on COW.
> This means, we have no way to relocate the leftover v1 data, and block
> the relocation.
>
> This patch will just workaround it by outputting a warning message,
> showing the user how to manually solve it.
>
> Reported-by: Stéphane Lesimple <stephane_btrfs2@lesimple.fr>
> Signed-off-by: Qu Wenruo <wqu@suse.com>
Please discard this patch.
This didn't really solve the problem and may give the end user some
false impression.
Thanks,
Qu
> ---
> fs/btrfs/relocation.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
> index 19b7db8b2117..42746b59268d 100644
> --- a/fs/btrfs/relocation.c
> +++ b/fs/btrfs/relocation.c
> @@ -3027,6 +3027,25 @@ int add_data_references(struct reloc_control *rc,
> ret = delete_v1_space_cache(eb, rc->block_group,
> extent_key->objectid);
> free_extent_buffer(eb);
> + /*
> + * This happens when the fs is converted to use v2 space cache,
> + * but some v1 data is still left.
> + * In that case, we can't delete the v1 space cache data as we
> + * can't grab the free space cache inode anymore.
> + *
> + * And we can't ignore the error, as for root tree (where v1
> + * space cache is) we don't do reloc tree to replace the data
> + * to the new location, thus the old data will still be there,
> + * blocking the data chunk to be relocated.
> + *
> + * Here we just warn user about the problem, and provide a
> + * workaround.
> + * The proper fix is in the v2 convert mount, which should
> + * completely remove v1 data.
> + */
> + if (ret == -ENOENT)
> + btrfs_warn(fs_info,
> +"leftover v1 space cache found, please use btrfs-check --clear-space-cache v1 to clean it up");
> if (ret < 0)
> break;
> ret = __add_tree_block(rc, ref_node->val, blocksize, blocks);
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 13:17 ` Stéphane Lesimple
@ 2020-12-30 5:49 ` Qu Wenruo
2020-12-30 8:39 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Qu Wenruo @ 2020-12-30 5:49 UTC (permalink / raw)
To: Stéphane Lesimple, Qu Wenruo, linux-btrfs
On 2020/12/29 下午9:17, Stéphane Lesimple wrote:
> December 29, 2020 2:08 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>
>> On 2020/12/29 下午8:51, Stéphane Lesimple wrote:
>>
>>> December 29, 2020 1:43 PM, "Qu Wenruo" <wqu@suse.com> wrote:
>>>
>>>> On 2020/12/29 下午8:30, Stéphane Lesimple wrote:
>>>
>>> December 29, 2020 12:32 PM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>>
>>> On 2020/12/29 下午7:08, Stéphane Lesimple wrote:
>>>
>>> December 29, 2020 11:31 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep EXTENT_DA
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> item 12 key (72271 EXTENT_DATA 0) itemoff 14310 itemsize 53
>>> item 25 key (74907 EXTENT_DATA 0) itemoff 12230 itemsize 53
>>> Mind to dump all those related inodes?
>>>
>>> E.g:
>>>
>>> $ btrfs ins dump-tree -t root <dev> | gerp 51933 -C 10
>>>
>>> Sure. I added -w to avoid grepping big numbers just containing the digits 51933:
>>>
>>> # btrfs ins dump-tree -t root /dev/mapper/luks-tank-mdata | grep 51933 -C 10 -w
>>> generation 2614632 root_dirid 256 bytenr 42705449811968 level 2 refs 1
>>> lastsnap 2614456 byte_limit 0 bytes_used 101154816 flags 0x1(RDONLY)
>>> uuid 1100ff6c-45fa-824d-ad93-869c94a87c7b
>>> parent_uuid 8bb8a884-ea4f-d743-8b0c-b6fdecbc397c
>>> ctransid 1337630 otransid 1249372 stransid 0 rtransid 0
>>> ctime 1554266422.693480985 (2019-04-03 06:40:22)
>>> otime 1547877605.465117667 (2019-01-19 07:00:05)
>>> drop key (0 UNKNOWN.0 0) level 0
>>> item 25 key (51098 ROOT_BACKREF 5) itemoff 10067 itemsize 42
>>> root backref key dirid 534 sequence 22219 name 20190119_070006_hourly.7
>>> item 26 key (51933 INODE_ITEM 0) itemoff 9907 itemsize 160
>>> generation 0 transid 1517381 size 262144 nbytes 30553407488
>>> block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
>>> sequence 116552 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
>>> atime 0.0 (1970-01-01 01:00:00)
>>> ctime 1567904822.739884119 (2019-09-08 03:07:02)
>>> mtime 0.0 (1970-01-01 01:00:00)
>>> otime 0.0 (1970-01-01 01:00:00)
>>> item 27 key (51933 EXTENT_DATA 0) itemoff 9854 itemsize 53
>>> generation 1517381 type 2 (prealloc)
>>> prealloc data disk byte 34626327621632 nr 262144
>>>> Got the point now.
>>>>
>>>> The type is preallocated, which means we haven't yet written space cache
>>>> into it.
>>>>
>>>> But the code only checks the regular file extent (written, not
>>>> preallocated).
>>>>
>>>> So the proper fix would looks like this:
>>>>
>>>> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
>>>> index 19b7db8b2117..1d73d7c2fbd7 100644
>>>> --- a/fs/btrfs/relocation.c
>>>> +++ b/fs/btrfs/relocation.c
>>>> @@ -2975,11 +2975,14 @@ static int delete_v1_space_cache(struct
>>>> extent_buffer *leaf,
>>>> return 0;
>>>>
>>>> for (i = 0; i < btrfs_header_nritems(leaf); i++) {
>>>> + u8 type;
>>>> btrfs_item_key_to_cpu(leaf, &key, i);
>>>> if (key.type != BTRFS_EXTENT_DATA_KEY)
>>>> continue;
>>>> ei = btrfs_item_ptr(leaf, i, struct
>>>> btrfs_file_extent_item);
>>>> - if (btrfs_file_extent_type(leaf, ei) ==
>>>> BTRFS_FILE_EXTENT_REG &&
>>>> + type = btrfs_file_extent_type(leaf, ei);
>>>> + if ((type == BTRFS_FILE_EXTENT_REG ||
>>>> + type == BTRFS_FILE_EXTENT_PREALLOC) &&
>>>> btrfs_file_extent_disk_bytenr(leaf, ei) ==
>>>> data_bytenr) {
>>>> found = true;
>>>> space_cache_ino = key.objectid;
>>>>
>>>> With this, the relocation should finish without problem.
>>>
>>> Aaah, it makes sense indeed.
>>>
>>> Do you want me to try this fix right now, or do you want to have a look
>>> at the btrfs-progs crash first? I don't know if it's related, but if it is,
>>> then maybe I won't be able to reproduce it again after finishing the balance.
>>
>> The problem is, I'm not that confident with v2 space cache debugging,
>> thus can't help much.
>>
>> But at least, the problem you're reporting doesn't really need a
>> btrfs-check repair.
>> Just a kernel fix would be enough.
>
> Yes indeed.
>
>>> I don't mind leaving the FS in this state for a few more days/weeks if needed.
>>
>> That's fine if you want some one to look into the btrfs-progs bug.
>
> I'll leave it like this up to, let's say, mid-January.
BTW, would you mind to dump the root tree?
# btrfs ins dump-tree -t root <device>
I'm more interested in the half dropped v1 space cache. Currently
although they are sane (with proper inode items), I'm a little concerned
if current v1 space cache cleanup can remove them.
Feel free to remove any subvolume names.
Thanks,
Qu
> If nobody has expressed interest
> in looking into this other problem, I'll apply your final patch and complete the balance,
> so that you can add a Tested-By.
>
>> I'll submit a proper bug fix soon.
>
> Thanks,
>
> Good evening!
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance
2020-12-29 13:17 ` Stéphane Lesimple
2020-12-30 5:49 ` Qu Wenruo
@ 2020-12-30 8:39 ` Stéphane Lesimple
1 sibling, 0 replies; 13+ messages in thread
From: Stéphane Lesimple @ 2020-12-30 8:39 UTC (permalink / raw)
To: Qu Wenruo, Qu Wenruo, linux-btrfs
December 30, 2020 6:52 AM, "Qu Wenruo" <quwenruo.btrfs@gmx.com> wrote:
> BTW, would you mind to dump the root tree?
>
> # btrfs ins dump-tree -t root <device>
>
> I'm more interested in the half dropped v1 space cache. Currently
> although they are sane (with proper inode items), I'm a little concerned
> if current v1 space cache cleanup can remove them.
>
> Feel free to remove any subvolume names.
This FS has several subvolumes, each having a couple of
snapshots, so the output is >100k lines and my mail would
be rejecter by vger.
So I've pasted the dump here instead:
https://paste.gg/p/anonymous/f551d37289bb49338c632b985153b4e0/files/f4a6c6bf88ae4f5abce80161d8e14c5f/raw
I don't know if it's worth noting, but I have other FS (/var,
/var/log, /root, etc.), that were converted from ext4, that also
seem to have v1 leftovers, through they're all mounted with
space_cache=v2 since several months. Note that the FS having the
balance problem was NOT converted from ext4 but created from scratch.
# for fs in $(awk '{if($3=="btrfs"){print $1}}' /proc/mounts | sort -u); do echo $(btrfs ins dump-tree -t root $fs | grep -c EXTENT_DATA) for $fs; done
3 for /dev/mapper/luks-tank-mdata <== the FS w/ balance problem
1169 for /dev/mapper/luks-inc-mdata
1 for /dev/mapper/vg-home
3 for /dev/mapper/vg-opt
1 for /dev/mapper/vg-root
0 for /dev/mapper/vgssd120-git2
2 for /dev/mapper/vg-var
0 for /dev/mapper/vg-varlog
0 for /dev/sdf2
The luks-inc-mdata FS is quite large too, but the others are tiny,
I've included their dump below, in case it adds some useful data points.
I can dump the other big FS if it helps.
The separator is '===':
=== /dev/mapper/vg-home
btrfs-progs v5.9
root tree
node 22856597504 level 1 items 2 free 491 generation 624269 owner ROOT_TREE
fs uuid 81084bb9-1db1-4333-9034-a09d3dafce04
chunk uuid af6a7ffd-9823-4921-ab78-4341da5e8b98
key (EXTENT_TREE ROOT_ITEM 0) block 22856613888 gen 624269
key (6295 ROOT_ITEM 604665) block 18240864256 gen 623295
leaf 22856613888 items 44 free space 7893 generation 624269 owner ROOT_TREE
leaf 22856613888 flags 0x1(WRITTEN) backref revision 1
fs uuid 81084bb9-1db1-4333-9034-a09d3dafce04
chunk uuid af6a7ffd-9823-4921-ab78-4341da5e8b98
item 0 key (EXTENT_TREE ROOT_ITEM 0) itemoff 15844 itemsize 439
generation 624269 root_dirid 0 bytenr 22831677440 level 2 refs 1
lastsnap 0 byte_limit 0 bytes_used 42778624 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 1 key (DEV_TREE ROOT_ITEM 0) itemoff 15405 itemsize 439
generation 622879 root_dirid 0 bytenr 15112011776 level 0 refs 1
lastsnap 0 byte_limit 0 bytes_used 16384 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 2 key (FS_TREE INODE_REF 6) itemoff 15388 itemsize 17
index 0 namelen 7 name: default
item 3 key (FS_TREE ROOT_ITEM 0) itemoff 14949 itemsize 439
generation 624269 root_dirid 256 bytenr 22800203776 level 2 refs 1
lastsnap 621494 byte_limit 0 bytes_used 562233344 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
ctransid 624269 otransid 0 stransid 0 rtransid 0
ctime 1609317332.466781372 (2020-12-30 09:35:32)
drop key (0 UNKNOWN.0 0) level 0
item 4 key (FS_TREE ROOT_REF 6295) itemoff 14907 itemsize 42
root ref key dirid 959298 sequence 55638 name x
item 5 key (FS_TREE ROOT_REF 6346) itemoff 14864 itemsize 43
root ref key dirid 959298 sequence 55404 name x
item 6 key (FS_TREE ROOT_REF 6387) itemoff 14822 itemsize 42
root ref key dirid 959298 sequence 55639 name x
item 7 key (FS_TREE ROOT_REF 6404) itemoff 14781 itemsize 41
root ref key dirid 959298 sequence 55879 name x
item 8 key (FS_TREE ROOT_REF 6417) itemoff 14740 itemsize 41
root ref key dirid 959298 sequence 55880 name x
item 9 key (FS_TREE ROOT_REF 6428) itemoff 14698 itemsize 42
root ref key dirid 959298 sequence 55890 name x
item 10 key (FS_TREE ROOT_REF 6429) itemoff 14656 itemsize 42
root ref key dirid 959298 sequence 55891 name x
item 11 key (FS_TREE ROOT_REF 6430) itemoff 14615 itemsize 41
root ref key dirid 959298 sequence 55881 name x
item 12 key (FS_TREE ROOT_REF 6431) itemoff 14573 itemsize 42
root ref key dirid 959298 sequence 55892 name x
item 13 key (FS_TREE ROOT_REF 6432) itemoff 14531 itemsize 42
root ref key dirid 959298 sequence 55893 name x
item 14 key (ROOT_TREE_DIR INODE_ITEM 0) itemoff 14371 itemsize 160
generation 2 transid 0 size 0 nbytes 16384
block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
sequence 0 flags 0x0(none)
atime 1581534987.0 (2020-02-12 20:16:27)
ctime 1581534987.0 (2020-02-12 20:16:27)
mtime 1581534987.0 (2020-02-12 20:16:27)
otime 1581534987.0 (2020-02-12 20:16:27)
item 15 key (ROOT_TREE_DIR INODE_REF 6) itemoff 14359 itemsize 12
index 0 namelen 2 name: ..
item 16 key (ROOT_TREE_DIR DIR_ITEM 2378154706) itemoff 14322 itemsize 37
location key (FS_TREE ROOT_ITEM 18446744073709551615) type DIR
transid 0 data_len 0 name_len 7
name: default
item 17 key (CSUM_TREE ROOT_ITEM 0) itemoff 13883 itemsize 439
generation 624269 root_dirid 0 bytenr 22813589504 level 2 refs 1
lastsnap 0 byte_limit 0 bytes_used 19578880 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 18 key (QUOTA_TREE ROOT_ITEM 0) itemoff 13444 itemsize 439
generation 624269 root_dirid 0 bytenr 22868754432 level 1 refs 1
lastsnap 0 byte_limit 0 bytes_used 835584 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 19 key (UUID_TREE ROOT_ITEM 0) itemoff 13005 itemsize 439
generation 621495 root_dirid 0 bytenr 23745658880 level 0 refs 1
lastsnap 0 byte_limit 0 bytes_used 16384 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 20 key (FREE_SPACE_TREE ROOT_ITEM 0) itemoff 12566 itemsize 439
generation 624269 root_dirid 0 bytenr 22841688064 level 1 refs 1
lastsnap 0 byte_limit 0 bytes_used 557056 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 21 key (257 INODE_ITEM 0) itemoff 12406 itemsize 160
generation 0 transid 621242 size 0 nbytes 40378302464
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 154031 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1599402820.364879849 (2020-09-06 16:33:40)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 22 key (258 INODE_ITEM 0) itemoff 12246 itemsize 160
generation 0 transid 616121 size 0 nbytes 78381056
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 299 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1598844680.76349444 (2020-08-31 05:31:20)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 23 key (259 INODE_ITEM 0) itemoff 12086 itemsize 160
generation 0 transid 515408 size 0 nbytes 2883584
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 11 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1581537139.173792483 (2020-02-12 20:52:19)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 24 key (260 INODE_ITEM 0) itemoff 11926 itemsize 160
generation 0 transid 515408 size 0 nbytes 2097152
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 8 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1581535843.997084354 (2020-02-12 20:30:43)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 25 key (261 INODE_ITEM 0) itemoff 11766 itemsize 160
generation 0 transid 563427 size 0 nbytes 4718592
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 18 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1598266123.181621125 (2020-08-24 12:48:43)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 26 key (262 INODE_ITEM 0) itemoff 11606 itemsize 160
generation 0 transid 526058 size 0 nbytes 1245184
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 19 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1598812433.32530868 (2020-08-30 20:33:53)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 27 key (263 INODE_ITEM 0) itemoff 11446 itemsize 160
generation 0 transid 621219 size 0 nbytes 22303473664
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 85081 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1592483438.119980445 (2020-06-18 14:30:38)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 28 key (264 INODE_ITEM 0) itemoff 11286 itemsize 160
generation 0 transid 621371 size 0 nbytes 11664621568
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 44497 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1599220056.938223389 (2020-09-04 13:47:36)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 29 key (265 INODE_ITEM 0) itemoff 11126 itemsize 160
generation 0 transid 624269 size 0 nbytes 16103768064
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 61431 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1599301134.181816156 (2020-09-05 12:18:54)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 30 key (266 INODE_ITEM 0) itemoff 10966 itemsize 160
generation 0 transid 621214 size 0 nbytes 18954321920
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 72305 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1599402820.364879849 (2020-09-06 16:33:40)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 31 key (267 INODE_ITEM 0) itemoff 10806 itemsize 160
generation 0 transid 624259 size 0 nbytes 22149070848
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 84492 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1599395848.43444859 (2020-09-06 14:37:28)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 32 key (268 INODE_ITEM 0) itemoff 10646 itemsize 160
generation 0 transid 526058 size 0 nbytes 2097152
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 8 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1581535843.997084354 (2020-02-12 20:30:43)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 33 key (269 INODE_ITEM 0) itemoff 10486 itemsize 160
generation 0 transid 617643 size 0 nbytes 1572864
block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 6 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1581535843.997084354 (2020-02-12 20:30:43)
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=== /dev/mapper/vg-opt
btrfs-progs v5.9
root tree
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atime 0.0 (1970-01-01 01:00:00)
ctime 1599402582.841910613 (2020-09-06 16:29:42)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
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atime 0.0 (1970-01-01 01:00:00)
ctime 1596798759.811298625 (2020-08-07 13:12:39)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
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block group 0 mode 100600 links 1 uid 0 gid 0 rdev 0
sequence 8 flags 0x1b(NODATASUM|NODATACOW|NOCOMPRESS|PREALLOC)
atime 0.0 (1970-01-01 01:00:00)
ctime 1589540801.223193149 (2020-05-15 13:06:41)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
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atime 0.0 (1970-01-01 01:00:00)
ctime 1596798759.811298625 (2020-08-07 13:12:39)
mtime 0.0 (1970-01-01 01:00:00)
otime 0.0 (1970-01-01 01:00:00)
item 34 key (262 EXTENT_DATA 0) itemoff 11263 itemsize 53
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extent data disk byte 362405888 nr 65536
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extent compression 0 (none)
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atime 0.0 (1970-01-01 01:00:00)
ctime 1596798759.811298625 (2020-08-07 13:12:39)
mtime 0.0 (1970-01-01 01:00:00)
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ctime 1589540801.223193149 (2020-05-15 13:06:41)
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extent compression 0 (none)
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drop key (0 UNKNOWN.0 0) level 0
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otime 1608816968.503355667 (2020-12-24 14:36:08)
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drop key (0 UNKNOWN.0 0) level 0
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drop key (0 UNKNOWN.0 0) level 0
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drop key (0 UNKNOWN.0 0) level 0
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drop key (0 UNKNOWN.0 0) level 0
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drop key (0 UNKNOWN.0 0) level 0
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otime 1609160133.704207973 (2020-12-28 13:55:33)
drop key (0 UNKNOWN.0 0) level 0
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=== /dev/mapper/vg-root
btrfs-progs v5.9
root tree
node 819658752 level 1 items 2 free 491 generation 381976 owner ROOT_TREE
fs uuid 0b653665-b0dc-4888-a078-67030e7c5a33
chunk uuid ef053892-fb25-439b-bc87-52d8a6e1ad32
key (EXTENT_TREE ROOT_ITEM 0) block 819691520 gen 381976
key (3636 ROOT_ITEM 146584) block 809549824 gen 379663
leaf 819691520 items 40 free space 10165 generation 381976 owner ROOT_TREE
leaf 819691520 flags 0x1(WRITTEN) backref revision 1
fs uuid 0b653665-b0dc-4888-a078-67030e7c5a33
chunk uuid ef053892-fb25-439b-bc87-52d8a6e1ad32
item 0 key (EXTENT_TREE ROOT_ITEM 0) itemoff 15844 itemsize 439
generation 381976 root_dirid 0 bytenr 819445760 level 1 refs 1
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uuid 00000000-0000-0000-0000-000000000000
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uuid 00000000-0000-0000-0000-000000000000
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index 0 namelen 7 name: default
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uuid 00000000-0000-0000-0000-000000000000
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ctime 1609317317.489469113 (2020-12-30 09:35:17)
drop key (0 UNKNOWN.0 0) level 0
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root ref key dirid 8580 sequence 70504 name x
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root ref key dirid 8580 sequence 71996 name x
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root ref key dirid 8580 sequence 72042 name x
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root ref key dirid 8580 sequence 72043 name x
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root ref key dirid 8580 sequence 72044 name x
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root ref key dirid 8580 sequence 72045 name x
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root ref key dirid 8580 sequence 72046 name x
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generation 2 transid 0 size 0 nbytes 16384
block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
sequence 0 flags 0x0(none)
atime 1581532612.0 (2020-02-12 19:36:52)
ctime 1581532612.0 (2020-02-12 19:36:52)
mtime 1581532612.0 (2020-02-12 19:36:52)
otime 1581532612.0 (2020-02-12 19:36:52)
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index 0 namelen 2 name: ..
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location key (FS_TREE ROOT_ITEM 18446744073709551615) type DIR
transid 0 data_len 0 name_len 7
name: default
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generation 381128 root_dirid 0 bytenr 804356096 level 1 refs 1
lastsnap 0 byte_limit 0 bytes_used 983040 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
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generation 381976 root_dirid 0 bytenr 819707904 level 1 refs 1
lastsnap 0 byte_limit 0 bytes_used 983040 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
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generation 379661 root_dirid 0 bytenr 808861696 level 0 refs 1
lastsnap 0 byte_limit 0 bytes_used 16384 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 33 key (FREE_SPACE_TREE ROOT_ITEM 0) itemoff 12018 itemsize 439
generation 381976 root_dirid 0 bytenr 819494912 level 1 refs 1
lastsnap 0 byte_limit 0 bytes_used 49152 flags 0x0(none)
uuid 00000000-0000-0000-0000-000000000000
drop key (0 UNKNOWN.0 0) level 0
item 34 key (257 INODE_ITEM 0) itemoff 11858 itemsize 160
generation 0 transid 332779 size 0 nbytes 458752
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=== /dev/mapper/vg-var
btrfs-progs v5.9
root tree
leaf 22044033024 items 81 free space 2577 generation 892019 owner ROOT_TREE
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Regards,
Stéphane.
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2020-12-30 8:40 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-29 0:38 [PATCH] btrfs: relocation: output warning message for leftover v1 space cache before aborting current data balance Qu Wenruo
2020-12-29 9:27 ` Stéphane Lesimple
2020-12-29 10:29 ` Qu Wenruo
2020-12-29 11:08 ` Stéphane Lesimple
2020-12-29 11:30 ` Qu Wenruo
2020-12-29 12:30 ` Stéphane Lesimple
2020-12-29 12:41 ` Qu Wenruo
2020-12-29 12:51 ` Stéphane Lesimple
2020-12-29 13:06 ` Qu Wenruo
2020-12-29 13:17 ` Stéphane Lesimple
2020-12-30 5:49 ` Qu Wenruo
2020-12-30 8:39 ` Stéphane Lesimple
2020-12-30 0:56 ` Qu Wenruo
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