(Be gentle. I not a kernel hacker. Just someone that likes to stay
"current". B-))
Twice now I've wound up with corrupted file systems, once with test3-pre7
and now with test4. The corruption happens to all mounted (rw) filesystems.
I "think" it happens on shutdown since everything runs fine and the on next
boot the kernel basically say the root fs is *ucked. B-)
I was able to recover most of my files the first time and hope I can this
time as well. I'll leave one of the corrupted FSes alone for a bit in case
anyone needs more info. I can even provide telnet/ftp access if needed.
What appears to be happening is that the data in the superblocks and bitmaps
get "shifted over/up" 2 bytes to the left (as viewed with a hex editor).
Here's a snippet of what the corrupted superblock looks like:
00000000 : 80 07 1C 00 38 00 38 00-02 00 02 00 27 00 27 00 :
....8.8.....'.'.
00000001 : AE 05 1C 00 00 00 00 00-00 00 00 00 02 00 02 00 :
®...............
00000002 : 00 80 00 00 00 00 00 00-00 00 00 00 6E 39 6E 39 :
............n9n9
00000003 : C1 62 06 00 06 00 53 EF-53 EF 01 00 01 00 00 00 :
Áb....SïSï......
00000004 : 36 01 6D 39 ED 00 ED 00-00 00 00 00 00 00 00 00 :
6.m9í.í.........
00000005 : 00 00 0B 00 0B 00 80 00-80 00 00 00 00 00 00 00 :
................
00000006 : 02 00 01 00 01 00 96 6D-96 6D 3E 27 3E 27 3E 27 :
.......m.m>'>'>'
00000007 : 9F 76 E4 7B E4 7B 00 00-00 00 00 00 00 00 00 00 :
.vä{ä{..........
Here's one of the backup superblocks:
00000000 : 80 07 1C 00 1C 0B 38 00-5B CD 02 00 CD 3A 22 00 :
......8.[Í..Í:".
00000001 : AB 05 1C 00 00 00 00 00-02 00 00 00 02 00 00 00 :
«...............
00000002 : 00 80 00 00 00 80 00 00-80 3F 00 00 3A AA 6C 39 :
.........?..:ªl9
00000003 : 36 01 6D 39 00 00 14 00-53 EF 00 00 01 00 00 00 :
6.m9....Sï......
00000004 : 36 01 6D 39 00 4E ED 00-00 00 00 00 01 00 00 00 :
6.m9.Ní.........
00000005 : 00 00 00 00 0B 00 00 00-80 00 01 00 00 00 00 00 :
................
00000006 : 02 00 00 00 01 00 00 00-96 6D EC DB 3E 27 46 2F :
.........mìÛ>'F/
00000007 : 9F 76 53 DD E4 7B 36 C2-00 00 00 00 00 00 00 00 :
.vSÝä{6Â........
The bitmaps have the same kind of corruption.
Hollar if there's anything else I can provide.
Leland
Here's some system info:
Asus MES-N - beta bios version 1006.02
Celeron 433
64MB memory
Western Digital WD205AA
D-Link DFE-570TX
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This archive was generated by hypermail 2b29 : Sat Jul 15 2000 - 21:00:18 EST