Unfixable UFS2 corruption
Eugene Grosbein
egrosbein at rdtc.ru
Wed Aug 31 16:24:11 UTC 2011
31.08.2011 23:13, Eugene Grosbein пишет:
> 31.08.2011 23:02, Adam Vande More пишет:
>
>> Long story short: my /usr/local UFS2 filesystem somehow got corrupted
>> and "fsck -y" in single user mode does not fix it.
>>
>> Not sure if this helps or not but on rare occasion I've had to run fsck twice consecutively to fix a FS.
>
> Not this time - fsck does NOT find any problems in this file system.
>
> Now I think fsck_ffs needs a patch:
>
> --- sbin/fsck_ffs/dir.c.orig 2011-08-31 22:54:23.000000000 +0700
> +++ sbin/fsck_ffs/dir.c 2011-08-31 22:54:48.000000000 +0700
> @@ -225,7 +225,7 @@
> type = dp->d_type;
> if (dp->d_reclen < size ||
> idesc->id_filesize < size ||
> - namlen > MAXNAMLEN ||
> + namlen == 0 || namlen > MAXNAMLEN ||
> type > 15)
> goto bad;
> for (cp = dp->d_name, size = 0; size < namlen; size++)
>
>
> Comments?
With this patch applied, my FS has finally been fixed by fsck:
** Last Mounted on /usr/local
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
DIRECTORY CORRUPTED I=1531227 OWNER=root MODE=40755
SIZE=4608 MTIME=Aug 30 01:28 2011
DIR=/obj/usr/local/src/secure/lib/libssh
SALVAGE? [yn]
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
LINK COUNT FILE I=24 OWNER=root MODE=100644
SIZE=892 MTIME=Sep 17 11:10 2010 COUNT 2 SHOULD BE 1
ADJUST? [yn]
** Phase 5 - Check Cyl groups
459580 files, 7411823 used, 7819495 free (105503 frags, 964249 blocks, 0.7% fragmentation)
***** FILE SYSTEM IS CLEAN *****
***** FILE SYSTEM WAS MODIFIED *****
Should I fill PR?
Eugene Grosbein
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