From: xuyang <xuyang2018.jy@cn.fujitsu.com>
To: darrick <darrick.wong@oracle.com>
Cc: fstests@vger.kernel.org
Subject: Re: [PATCH] common/populate: decrease the step of rm file
Date: Thu, 4 Apr 2019 14:30:09 +0800 [thread overview]
Message-ID: <5CA5A471.7090306@cn.fujitsu.com> (raw)
In-Reply-To: <20190403224359.GB32415@magnolia>
On 2019/4/4 6:43, Darrick J. Wong wrote:
> On Thu, Mar 28, 2019 at 03:48:59PM +0800, Yang Xu wrote:
>> Now that we have allocated 2*4096*64/16(32768) inodes after "Inode btree",
>> but the step of rm file is too large to create enough free inodes in agi.
>> So the freecount is not enough large to make free_level gt 1 and call
>> _scratch__populate on xfs will report the following failure(such as xfs/083):
>>
>> Failed to create fino of sufficient height!
>>
>> By decreasing the step of rm file, xfs/083 will pass.
> Hmm, what are MOUNT_OPTS and MKFS_OPTIONS when this happens? Are you
> running on top of some kind of RAID or 4k sector disk or something?
The mkfs and mount option as below:
MKFS_OPTIONS -- -f -bsize=4096 /dev/sda11
MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/sda11 /mnt/xfstests/scratch
I run this case on anordinary disk, in xfs/083.full, the disk information as below:
meta-data=/dev/sda11 isize=512 agcount=4, agsize=1310720 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1
data = bsize=4096 blocks=5242880, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
+ populate fs image
MOUNT_OPTIONS = -o usrquota,grpquota,prjquota
fdisk -l /dev/sda
Disk /dev/sda: 298.1 GiB, 320072933376 bytes, 625142448 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00039ec7
/dev/sda11 553664512 595607551 41943040 20G 83 Linux
> I think this patch looks ok but I'm puzzled for why a step of
> $(ino_per_rec + 1) isn't enough.
>
> --D
Hi Darrick
Sorry, I am not aware that the count mechanism of agi_free_level. IMO, agi_free_count achives a
threshold that current free inode btree level can notstore free inode information(I want to search the threshold in kernel,but fail).
Then, free_level will add.
on my machine, I decrease the step. When the value of step is 2,4,8,16, the free count becomes larger
and the free_level turns into 2.
a step of $(ino_per_rec + 1) isn't enough. It maynot fill up current agi_free_level because it doesn't create enough free inodes
(allocat,free,not unused inodes).
Thanks,
Yang Xu
>> Signed-off-by: Yang Xu<xuyang2018.jy@cn.fujitsu.com>
>> ---
>> common/populate | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/common/populate b/common/populate
>> index 4fa118f0..7403dec3 100644
>> --- a/common/populate
>> +++ b/common/populate
>> @@ -271,7 +271,7 @@ _scratch_xfs_populate() {
>> touch "${dir}/${f}"
>> done
>>
>> - seq 0 "$((ino_per_rec + 1))" "${nr}" | while read f; do
>> + seq 0 2 "${nr}" | while read f; do
>> rm -f "${dir}/${f}"
>> done
>>
>> --
>> 2.18.1
>>
>>
>>
>
>
next prev parent reply other threads:[~2019-04-04 6:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 7:48 [PATCH] common/populate: decrease the step of rm file Yang Xu
2019-04-01 11:14 ` Eryu Guan
2019-04-03 0:16 ` Darrick J. Wong
2019-04-03 22:43 ` Darrick J. Wong
2019-04-04 6:30 ` xuyang [this message]
2019-04-08 21:57 ` Darrick J. Wong
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