On Apr 08, 2002 15:08 +0900, Andy Paul wrote: > - I suppose I can survive without it. Would have used RAID, had I needed an > insurance policy. I am more concerned about not finding the cause and > having the same experience repeated next time. Well, RAID is not a form of backup, especially in a case like this. It only protects you from disk failures, not software screw-ups. > - The error sequence started when a user tried to access some data using > samba. Noticing some strange delay, he cancelled the request, however samba > (?) seemed to have entered some retry loop, trying to access various > inodes/blocks for about 1 hour, and filling the log with errors. Sounds like a software problem to me. > #od -Ax -tx4 /dev/hda9 > 000200 9a038c08 9476785f 49bf458f c00096e3 > : : : : : > 0003f0 d9995854 d6aaaddf 04b01455 41407ffe This chunk is repeated every few sectors on your disk. This is why I think it looks like a software problem. > 000400 00664000 00cc7892 000a393a 00267129 > 000410 00662dfc 00000000 00000002 00000002 > 000420 00008000 00008000 00004000 3ca7c82d > 000430 3cb11525 00250019 0003ef53 00000001 > 000440 3c05b658 00ed4e00 00000000 00000001 > 000450 00000000 0000000b 00000080 00000004 > 000460 00000002 00000001 a73c96f6 d34646c9 > 000470 8258dcb3 d03f0f27 6168732f 00366572 This seems like a normal superblock (probably written out later over the rest of the junk on the disk). > 000800 9a038c08 9476785f 49bf458f c00096e3 > : : : : : > 0009f0 d9995854 d6aaaddf 04b01455 41407ffe > 000a00 9a038c08 9476785f 49bf458f c00096e3 > : : : : : > 000bf0 d9995854 d6aaaddf 04b01455 41407ffe > 000c00 9a038c08 9476785f 49bf458f c00096e3 > : : : : : > 000e00 9a038c08 9476785f 49bf458f c00096e3 > : : : : : > 000ff0 d9995854 d6aaaddf 04b01455 41407ffe > #./findsuper /dev/hda9 512 0 > starting at 0, with 512 byte increments > thisoff block fs_blk_sz blksz grp last_mount > 1024 1 13400210 4096 0 Mon Apr 1 11:38:37 2002 Normal superblock... > 8053760 7865 13400210 4096 0 Mon Apr 1 11:38:37 2002 > : : : : : : : : : : : > 8082432 7893 13400210 4096 0 Mon Apr 1 11:38:37 2002 Superblocks in the journal... > 134217728 131072 13400210 4096 1 Mon Apr 1 11:38:37 2002 > 402653184 393216 13400210 4096 3 Mon Apr 1 11:38:37 2002 > 671088640 655360 13400210 4096 5 Mon Apr 1 11:38:37 2002 > 939524096 917504 13400210 4096 7 Mon Apr 1 11:38:37 2002 > 1207959552 1179648 13400210 4096 9 Mon Apr 1 11:38:37 2002 > 3355443200 3276800 13400210 4096 25 Mon Apr 1 11:38:37 2002 > 3623878656 3538944 13400210 4096 27 Mon Apr 1 11:38:37 2002 > 6576668672 6422528 13400210 4096 49 Mon Apr 1 11:38:37 2002 > 10871635968 10616832 13400210 4096 81 Mon Apr 1 11:38:37 2002 Backup superblocks. ^^^^ Try using some of these numbers for e2fsck, e2fsck -b 131072 /dev/hda9 e2fsck -b 393216 /dev/hda9 e2fsck -b 917504 /dev/hda9 : Cheers, Andreas -- Andreas Dilger http://www-mddsp.enel.ucalgary.ca/People/adilger/ http://sourceforge.net/projects/ext2resize/
