Messages in this thread | | | Subject | Possible EXT2 race | Date | Fri, 7 Dec 2007 08:15:42 -0500 | From | "linux-os (Dick Johnson)" <> |
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On linux-2.6.22.1, executing the following script while the mailer is writing to /var/spool/mail/linux-os.....
#!/bin/bash while true ; do >/var/spool/mail/linux-os; sleep 1; done
...will cause the following errors to occur.
Dec 7 04:05:55 chaos kernel: sd 0:0:1:0: [sdb] Sense Key : No Sense [deferred] Dec 7 04:05:55 chaos kernel: Info fld=0x1980240 Dec 7 04:05:55 chaos kernel: sd 0:0:1:0: [sdb] Add. Sense: Peripheral device write fault Dec 7 04:08:13 chaos kernel: attempt to access beyond end of device Dec 7 04:08:13 chaos kernel: sdb1: rw=0, want=29687515944, limit=33736437 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_xattr_delete_inode: inode 656387: block -584027804 read error Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 3710940964, count = 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 4294967295, count = 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 4294967295, count = 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 3710940980, count = 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 3710940980, count = 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: bit already cleared for block 1 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_blocks: Freeing blocks not in datazone - block = 3710941012, count = 1 Dec 7 04:08:13 chaos kernel: attempt to access beyond end of device Dec 7 04:08:13 chaos kernel: sdb1: rw=0, want=29687528104, limit=33736437 Dec 7 04:08:13 chaos kernel: EXT2-fs error (device sdb1): ext2_free_branches: Read failure, inode=656399, block=-584026284 Dec 7 04:08:13 chaos kernel: attempt to access beyond end of device Dec 7 04:08:13 chaos kernel: sdb1: rw=0, want=29687529288, limit=33736437 Dec 7 04:08:15 chaos kernel: EXT2-fs error (device sdb1): ext2_xattr_delete_inode: inode 656400: block -584026136 read error Dec 7 04:08:18 chaos kernel: EXT2-fs error (device sdb1): ext2_xattr_delete_inode: inode 656403: bad block 30188
Caution is advised when testing because this destroyed a filesystem, making it unfixable by `fsck`.
Cheers, Dick Johnson Penguin : Linux version 2.6.22.1 on an i686 machine (5588.29 BogoMips). My book : http://www.AbominableFirebug.com/ _
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