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SubjectRe: raid5 crash
> I doubt very much that this would happen with ext3.  I don't know
> about xfs, but I doubt it would happen their either.
> When using some other filesystem, what sort of data corruption are you
> getting?

This is with ext3:

kernel BUG at drivers/md/raid5.c:813!
invalid operand: 0000 [#1]
Modules linked in: sata_sil libata sbp2 ohci1394 ieee1394 usb_storage ehci_hcd
usbcore
CPU: 0
EIP: 0060:[<c039cdd2>] Not tainted VLI
EFLAGS: 00010016 (2.6.9-gentoo-r10)
EIP is at add_stripe_bio+0x1c2/0x200
eax: 493c4b40 ebx: cbc5eaa0 ecx: e8257da0 edx: 00000000
esi: 493c4b18 edi: 00000000 ebp: f58958b0 esp: f5995a98
ds: 007b es: 007b ss: 0068
Process rsync (pid: 8803, threadinfo=f5994000 task=d841aaa0)
Stack: c01551f7 f7ddf200 00000118 f58957c8 493c4b18 00000000 e8257da0 c039e092
f58957c8 e8257da0 00000001 00000000 00000000 f5995af0 f5fde2e0 493c4b30
00000000 00000003 00000004 f5fde2e0 dfe90e00 00000001 00000000 f7d84088
Call Trace:
[<c01551f7>] __getblk+0x37/0x70
[<c039e092>] make_request+0x122/0x200
[<c032dc6f>] generic_make_request+0x15f/0x1e0
[<c032dd4d>] submit_bio+0x5d/0x100
[<c01b5ec4>] ext3_get_block+0x64/0xb0
[<c0172d43>] mpage_bio_submit+0x23/0x40
[<c0173170>] do_mpage_readpage+0x2d0/0x480
[<c0332b08>] as_next_request+0x38/0x50
[<c032a706>] elv_next_request+0x16/0x110
[<c02b4c1e>] kobject_put+0x1e/0x30
[<c02b4bf0>] kobject_release+0x0/0x10
[<c02b54df>] radix_tree_node_alloc+0x1f/0x60
[<c02b5762>] radix_tree_insert+0xe2/0x100
[<c0136e54>] add_to_page_cache+0x54/0x80
[<c017346b>] mpage_readpages+0x14b/0x180
[<c01b5e60>] ext3_get_block+0x0/0xb0
[<c013ddf4>] read_pages+0x134/0x140
[<c01b5e60>] ext3_get_block+0x0/0xb0
[<c013b390>] __alloc_pages+0x1d0/0x370
[<c013e04f>] do_page_cache_readahead+0xcf/0x130
[<c013e234>] page_cache_readahead+0x184/0x1e0
[<c013765c>] do_generic_mapping_read+0x11c/0x4d0
[<c0137cae>] __generic_file_aio_read+0x1be/0x1f0
[<c0137a10>] file_read_actor+0x0/0xe0
[<c02b4c1e>] kobject_put+0x1e/0x30
[<c0137d3a>] generic_file_aio_read+0x5a/0x80
[<c015261e>] do_sync_read+0xbe/0xf0
[<f92cdc66>] ata_qc_complete+0x46/0xe0 [libata]
[<c011d590>] autoremove_wake_function+0x0/0x60
[<c036b9aa>] scsi_finish_command+0x7a/0xc0
[<c011bb9f>] recalc_task_prio+0x8f/0x190
[<c015270c>] vfs_read+0xbc/0x170
[<c040e363>] schedule+0x2a3/0x470
[<c0152a71>] sys_read+0x51/0x80
[<c010603b>] syscall_call+0x7/0xb
Code: 72 08 0f ba a8 90 00 00 00 02 83 c4 0c 5b 5e 5f 5d c3 89 cb e9 cd fe ff
ff 8b 5d 00 e9 c5 fe ff ff 77 08 39 f0 0f 86 94 fe ff ff <0f> 0b 2d 0370 92
44 c0 e9 87 fe ff ff 0f 87 a8 fe ff ff 39 f0
So apparently it can happen with ext3 as well.

--
Kristian
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