Invalid superblock after e2fsck
Albert Sellarès
whats at wekk.net
Tue Feb 23 07:54:34 UTC 2010
Hi,
I have the original filesystem (on a logical volume) "intact" because I've
always worked on snapshots.
The filesystem has less than 2^31 blocks. This system has been correctly
running for four years and corruption become because of a hardware problem
with a SAN device.
The output of dumpe2fs -h /dev/storage/cabina is:
dumpe2fs 1.41.9 (22-Aug-2009)
Filesystem volume name: <none>
Last mounted on: <not available>
Filesystem UUID: 607db553-3dc2-4304-9059-37eb99f1047b
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal resize_inode filetype sparse_super
large_file
Filesystem flags: signed_directory_hash
Default mount options: (none)
Filesystem state: clean with errors
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 1038548992
Block count: 2077085696
Reserved block count: 0
Free blocks: 220295654
Free inodes: 1004004295
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 877
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 16384
Inode blocks per group: 512
Filesystem created: Fri Jul 7 16:45:37 2006
Last mount time: Wed Jan 20 11:53:00 2010
Last write time: Thu Feb 11 10:16:13 2010
Mount count: 65
Maximum mount count: 35
Last checked: Sat Jul 15 05:53:09 2006
Check interval: 15552000 (6 months)
Next check after: Thu Jan 11 04:53:09 2007
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal inode: 8
Default directory hash: tea
Directory Hash Seed: 94a8b51f-6ba4-484d-bb92-167cb75c3eb6
Journal backup: inode blocks
Journal size: 32M
Thanks you!
> What is the blocksize of your filesystem? RHEL4 should be safe for
> 2^31 blocks, which -should- get you to 8T at 4k blocks.
>
> dumpe2fs -h info would show us (long as you have an intact superblock
> somewehre...)
>
> But if you were beyond 2^31 blocks I imagine you'd have hit troubles
early
> on.
>
> -Eric
--
Albert Sellarès GPG id: 0x13053FFE
http://www.wekk.net whats at jabber.org
Linux User: 324456
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