* [f2fs-dev] [PATCH] dump.f2fs: add -I nid to dump inode by scan full disk
@ 2022-04-15 1:59 Yufen Yu via Linux-f2fs-devel
2022-04-17 7:00 ` Chao Yu
0 siblings, 1 reply; 2+ messages in thread
From: Yufen Yu via Linux-f2fs-devel @ 2022-04-15 1:59 UTC (permalink / raw)
To: linux-f2fs-devel
Usage:
dump.f2fs -I [inode nid] /dev/sda
This feature can be useful for some bugs caused by system crash.
We not only need dump current valid node page, but alse the history
data in disk, which can give some clues for status change of the inode.
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
---
fsck/dump.c | 27 +++++++++++++++++++++++++++
fsck/fsck.h | 1 +
fsck/main.c | 14 +++++++++++++-
3 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/fsck/dump.c b/fsck/dump.c
index fce86c9..8fab602 100644
--- a/fsck/dump.c
+++ b/fsck/dump.c
@@ -539,6 +539,33 @@ static bool is_sit_bitmap_set(struct f2fs_sb_info *sbi, u32 blk_addr)
(const char *)se->cur_valid_map) != 0;
}
+void dump_node_scan_disk(struct f2fs_sb_info *sbi, nid_t nid)
+{
+ struct f2fs_node *node_blk;
+ pgoff_t blkaddr;
+ pgoff_t start_blkaddr = SM_I(sbi)->main_blkaddr;
+ pgoff_t end_blkaddr = start_blkaddr +
+ SM_I(sbi)->main_segments << sbi->log_blocks_per_seg;
+
+ node_blk = calloc(BLOCK_SZ, 1);
+ ASSERT(node_blk);
+ MSG(0, "Info: scan all nid: %u from block_addr [%lu: %lu]\n",
+ nid, start_blkaddr, end_blkaddr);
+
+ for (blkaddr = start_blkaddr; blkaddr < end_blkaddr; blkaddr++) {
+ dev_read_block(node_blk, blkaddr);
+ if (le32_to_cpu(node_blk->footer.ino) != nid ||
+ le32_to_cpu(node_blk->footer.nid) != nid)
+ continue;
+ MSG(0, "Info: nid: %u, blkaddr: %lu\n", nid, blkaddr);
+ MSG(0, "node_blk.footer.flag [0x%x]\n", le32_to_cpu(node_blk->footer.flag));
+ MSG(0, "node_blk.footer.cp_ver [%x]\n", cpver_of_node(node_blk));
+ print_inode_info(sbi, node_blk, 0);
+ }
+
+ free(node_blk);
+}
+
int dump_node(struct f2fs_sb_info *sbi, nid_t nid, int force)
{
struct node_info ni;
diff --git a/fsck/fsck.h b/fsck/fsck.h
index ce5fffe..0c819f0 100644
--- a/fsck/fsck.h
+++ b/fsck/fsck.h
@@ -262,6 +262,7 @@ struct dump_option {
int start_ssa;
int end_ssa;
int32_t blk_addr;
+ nid_t scan_nid;
};
extern void nat_dump(struct f2fs_sb_info *, nid_t, nid_t);
diff --git a/fsck/main.c b/fsck/main.c
index e4cfdf4..c7ad5ad 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -93,6 +93,7 @@ void dump_usage()
MSG(0, "[options]:\n");
MSG(0, " -d debug level [default:0]\n");
MSG(0, " -i inode no (hex)\n");
+ MSG(0, " -I inode no (hex) scan full disk\n");
MSG(0, " -n [NAT dump nid from #1~#2 (decimal), for all 0~-1]\n");
MSG(0, " -M show a block map\n");
MSG(0, " -s [SIT dump segno from #1~#2 (decimal), for all 0~-1]\n");
@@ -382,7 +383,7 @@ void f2fs_parse_options(int argc, char *argv[])
}
} else if (!strcmp("dump.f2fs", prog)) {
#ifdef WITH_DUMP
- const char *option_string = "d:i:n:Ms:Sa:b:V";
+ const char *option_string = "d:i:I:n:Ms:Sa:b:V";
static struct dump_option dump_opt = {
.nid = 0, /* default root ino */
.start_nat = -1,
@@ -392,6 +393,7 @@ void f2fs_parse_options(int argc, char *argv[])
.start_ssa = -1,
.end_ssa = -1,
.blk_addr = -1,
+ .scan_nid = 0,
};
c.func = DUMP;
@@ -424,6 +426,14 @@ void f2fs_parse_options(int argc, char *argv[])
ret = sscanf(optarg, "%x",
&dump_opt.nid);
break;
+ case 'I':
+ if (strncmp(optarg, "0x", 2))
+ ret = sscanf(optarg, "%d",
+ &dump_opt.scan_nid);
+ else
+ ret = sscanf(optarg, "%x",
+ &dump_opt.scan_nid);
+ break;
case 'n':
ret = sscanf(optarg, "%d~%d",
&dump_opt.start_nat,
@@ -916,6 +926,8 @@ static void do_dump(struct f2fs_sb_info *sbi)
dump_info_from_blkaddr(sbi, opt->blk_addr);
if (opt->nid)
dump_node(sbi, opt->nid, 0);
+ if (opt->scan_nid)
+ dump_node_scan_disk(sbi, opt->scan_nid);
print_cp_state(flag);
--
2.31.1
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [f2fs-dev] [PATCH] dump.f2fs: add -I nid to dump inode by scan full disk
2022-04-15 1:59 [f2fs-dev] [PATCH] dump.f2fs: add -I nid to dump inode by scan full disk Yufen Yu via Linux-f2fs-devel
@ 2022-04-17 7:00 ` Chao Yu
0 siblings, 0 replies; 2+ messages in thread
From: Chao Yu @ 2022-04-17 7:00 UTC (permalink / raw)
To: Yufen Yu, linux-f2fs-devel
On 2022/4/15 9:59, Yufen Yu via Linux-f2fs-devel wrote:
> Usage:
> dump.f2fs -I [inode nid] /dev/sda
>
> This feature can be useful for some bugs caused by system crash.
> We not only need dump current valid node page, but alse the history
> data in disk, which can give some clues for status change of the inode.
>
> Signed-off-by: Yufen Yu <yuyufen@huawei.com>
> ---
> fsck/dump.c | 27 +++++++++++++++++++++++++++
> fsck/fsck.h | 1 +
> fsck/main.c | 14 +++++++++++++-
> 3 files changed, 41 insertions(+), 1 deletion(-)
>
> diff --git a/fsck/dump.c b/fsck/dump.c
> index fce86c9..8fab602 100644
> --- a/fsck/dump.c
> +++ b/fsck/dump.c
> @@ -539,6 +539,33 @@ static bool is_sit_bitmap_set(struct f2fs_sb_info *sbi, u32 blk_addr)
> (const char *)se->cur_valid_map) != 0;
> }
>
> +void dump_node_scan_disk(struct f2fs_sb_info *sbi, nid_t nid)
> +{
> + struct f2fs_node *node_blk;
> + pgoff_t blkaddr;
> + pgoff_t start_blkaddr = SM_I(sbi)->main_blkaddr;
> + pgoff_t end_blkaddr = start_blkaddr +
> + SM_I(sbi)->main_segments << sbi->log_blocks_per_seg;
> +
> + node_blk = calloc(BLOCK_SZ, 1);
> + ASSERT(node_blk);
> + MSG(0, "Info: scan all nid: %u from block_addr [%lu: %lu]\n",
> + nid, start_blkaddr, end_blkaddr);
> +
> + for (blkaddr = start_blkaddr; blkaddr < end_blkaddr; blkaddr++) {
> + dev_read_block(node_blk, blkaddr);
ret = dev_read_block(node_blk, blkaddr);
ASSERT(ret >= 0);
> + if (le32_to_cpu(node_blk->footer.ino) != nid ||
> + le32_to_cpu(node_blk->footer.nid) != nid)
> + continue;
> + MSG(0, "Info: nid: %u, blkaddr: %lu\n", nid, blkaddr);
> + MSG(0, "node_blk.footer.flag [0x%x]\n", le32_to_cpu(node_blk->footer.flag));
> + MSG(0, "node_blk.footer.cp_ver [%x]\n", cpver_of_node(node_blk));
> + print_inode_info(sbi, node_blk, 0);
> + }
> +
> + free(node_blk);
> +}
> +
> int dump_node(struct f2fs_sb_info *sbi, nid_t nid, int force)
> {
> struct node_info ni;
> diff --git a/fsck/fsck.h b/fsck/fsck.h
> index ce5fffe..0c819f0 100644
> --- a/fsck/fsck.h
> +++ b/fsck/fsck.h
> @@ -262,6 +262,7 @@ struct dump_option {
> int start_ssa;
> int end_ssa;
> int32_t blk_addr;
> + nid_t scan_nid;
> };
>
> extern void nat_dump(struct f2fs_sb_info *, nid_t, nid_t);
> diff --git a/fsck/main.c b/fsck/main.c
> index e4cfdf4..c7ad5ad 100644
> --- a/fsck/main.c
> +++ b/fsck/main.c
> @@ -93,6 +93,7 @@ void dump_usage()
> MSG(0, "[options]:\n");
> MSG(0, " -d debug level [default:0]\n");
> MSG(0, " -i inode no (hex)\n");
> + MSG(0, " -I inode no (hex) scan full disk\n");
It needs to update manual of dump.f2fs as well.
Thanks,
> MSG(0, " -n [NAT dump nid from #1~#2 (decimal), for all 0~-1]\n");
> MSG(0, " -M show a block map\n");
> MSG(0, " -s [SIT dump segno from #1~#2 (decimal), for all 0~-1]\n");
> @@ -382,7 +383,7 @@ void f2fs_parse_options(int argc, char *argv[])
> }
> } else if (!strcmp("dump.f2fs", prog)) {
> #ifdef WITH_DUMP
> - const char *option_string = "d:i:n:Ms:Sa:b:V";
> + const char *option_string = "d:i:I:n:Ms:Sa:b:V";
> static struct dump_option dump_opt = {
> .nid = 0, /* default root ino */
> .start_nat = -1,
> @@ -392,6 +393,7 @@ void f2fs_parse_options(int argc, char *argv[])
> .start_ssa = -1,
> .end_ssa = -1,
> .blk_addr = -1,
> + .scan_nid = 0,
> };
>
> c.func = DUMP;
> @@ -424,6 +426,14 @@ void f2fs_parse_options(int argc, char *argv[])
> ret = sscanf(optarg, "%x",
> &dump_opt.nid);
> break;
> + case 'I':
> + if (strncmp(optarg, "0x", 2))
> + ret = sscanf(optarg, "%d",
> + &dump_opt.scan_nid);
> + else
> + ret = sscanf(optarg, "%x",
> + &dump_opt.scan_nid);
> + break;
> case 'n':
> ret = sscanf(optarg, "%d~%d",
> &dump_opt.start_nat,
> @@ -916,6 +926,8 @@ static void do_dump(struct f2fs_sb_info *sbi)
> dump_info_from_blkaddr(sbi, opt->blk_addr);
> if (opt->nid)
> dump_node(sbi, opt->nid, 0);
> + if (opt->scan_nid)
> + dump_node_scan_disk(sbi, opt->scan_nid);
>
> print_cp_state(flag);
>
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-04-17 7:00 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-15 1:59 [f2fs-dev] [PATCH] dump.f2fs: add -I nid to dump inode by scan full disk Yufen Yu via Linux-f2fs-devel
2022-04-17 7:00 ` Chao Yu
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.