Messages in this thread | | | Subject | Re: [2.6.27.6] jfs on raid1 => attempt to access beyond end of device. | Date | Thu, 20 Nov 2008 14:42:16 +0200 | From | "Paweł Sikora" <> |
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20/11/2008, "Neil Brown" <neilb@suse.de> napisał/a:
>Hi. > I sent this reply, but I bounced. I don't know why but I'm sending > it again a different way. Hopefully it will get through. > Please Cc any followup to linux-kernel@vger.kernel.org. I think the > email got through to the list. >NeilBrown > > > >On Thu, November 20, 2008 8:03 pm, Paweł Sikora wrote: >> hi, >> >> few hours ago i've set up jfs filesystems on raid1 and raid0. >> during restoring backup i've got an errors in dmesg. >> the testcase on my system is easy and 100% reproducible: >> just do the following command on jfs/raid1 device: >.... > >> /dev/sda2 * 748 2206 11719417+ fd Linux raid > ^^^^^^^^^ >size of sda2 is Kilobytes - 23438835 sectors. > > >> >> md0 : active raid1 sda2[0] sdb2[1] >> 11719296 blocks [2/2] [UU] > ^^^^^^^^ > >size of md0 in kilobytes - 23438592 sectors. > > >> [ 5583.796222] attempt to access beyond end of device >> [ 5583.796227] md0: rw=1, want=23438832, limit=23438592 >Largest 'want' value. > >'want' is just less than size of sda2 >'limit' is exactly size of md0 (no surprise there). > >> any ideas what's wrong? > >I suspect you created the filesystem on /dev/sda2, not realising >that when you created a raid1 from sda2 and sdb2 it would be slightly >smaller than sda2 (as md used up to 120K for metadata storage).
thanks for the quick reply! afair i've ran mkfs.jfs on /dev/md/0. quick test...
working raid0 device:
# fsck.jfs -f -n /dev/md/1 fsck.jfs version 1.1.13, 17-Jul-2008 processing started: 11/20/2008 13.38.32 Filesystem is currently mounted. WARNING: Checking a mounted filesystem does not produce dependable results. The current device is: /dev/md/1 Block size in bytes: 4096 Filesystem size in blocks: 51757376 **Phase 0 - Replay Journal Log **Phase 1 - Check Blocks, Files/Directories, and Directory Entries **Phase 2 - Count links (...)
failing raid1 device:
# fsck.jfs -f -n -v /dev/md/0 fsck.jfs version 1.1.13, 17-Jul-2008 processing started: 11/20/2008 13.34.54
/dev/md/0 is mounted and the file system is not type JFS. (...)
and the raw sda2 device:
# fsck.jfs -f -n -v /dev/sda2 fsck.jfs version 1.1.13, 17-Jul-2008 processing started: 11/20/2008 13.34.50 The current device is: /dev/sda2 Open(...READ/WRITE EXCLUSIVE...) returned rc = 0 Invalid magic number in the superblock (P). Invalid magic number in the superblock (S).
The superblock does not describe a correct jfs file system. (...) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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