Michael Tokarev wrote:
[data corruption.. snip]
And finally I managed to get an OOPs.
Created fresh raid5 array out of 4 partitions,
chunk size = 4kb.
Created ext3fs on it.
Tested write speed (direct-io) - it was terrible,
about 6MB/sec for 64KB blocks - it's very unusual.
Umounted the fs.
Did a direct-write test agains the md device.
And at the same time, did an `rmmod raid0' -
unused in my config at that time. -- not sure
if it's relevant or not.
And get "sigsegv" in my program, and the
following oops:
md: raid0 personality unregistered
Unable to handle kernel paging request at virtual address f8924690
printing eip:
f8924690
*pde = 02127067
*pte = 00000000
Oops: 0000 [#1]
SMP
Modules linked in: raid10 nfsd exportfs raid5 xor nfs lockd sunrpc 8250 serial_core w83627hf i2c_sensor
i2c_isa i2c_core e1000 genrtc ext3 jbd mbcache raid1 sd_mod md aic79xx scsi_mod
CPU: 1
EIP: 0060:[<f8924690>] Not tainted VLI
EFLAGS: 00010286 (2.6.9-i686smp-0)
EIP is at 0xf8924690
eax: ecd04028 ebx: c99ead40 ecx: c21dc380 edx: c99ead40
esi: ecd04028 edi: f8924690 ebp: c21dc380 esp: f1d39cac
ds: 007b es: 007b ss: 0068
Process dio (pid: 21941, threadinfo=f1d39000 task=f7d40890)
Stack: c015b5dd c99ead40 c10063a0 00001000 00000000 c015b64c 00001000 00000000
f7d23800 00000000 c01778f2 00000000 f7d23800 c017798d f7d23800 c10063a0
c0177a4e 00000000 00000001 00000000 f7d2384c f7d23800 c0177e78 00001000
Call Trace:
[<c015b5dd>] __bio_add_page+0x13d/0x180
[<c015b64c>] bio_add_page+0x2c/0x40
[<c01778f2>] dio_bio_add_page+0x22/0x70
[<c017798d>] dio_send_cur_page+0x4d/0xa0
[<c0177a4e>] submit_page_section+0x6e/0x140
[<c0177e78>] do_direct_IO+0x288/0x380
[<c0178164>] direct_io_worker+0x1f4/0x520
[<c017869d>] __blockdev_direct_IO+0x20d/0x308
[<c015d770>] blkdev_get_blocks+0x0/0x70
[<c015d83f>] blkdev_direct_IO+0x5f/0x80
[<c015d770>] blkdev_get_blocks+0x0/0x70
[<c013c304>] generic_file_direct_IO+0x74/0x90
[<c013b352>] generic_file_direct_write+0x62/0x170
[<c016f7cb>] inode_update_time+0xbb/0xc0
[<c013bcfe>] generic_file_aio_write_nolock+0x2ce/0x490
[<c013bf51>] generic_file_write_nolock+0x91/0xc0
[<c011ae9e>] scheduler_tick+0x16e/0x470
[<c0115135>] smp_apic_timer_interrupt+0x85/0xf0
[<c011c850>] autoremove_wake_function+0x0/0x50
[<c015e6c0>] blkdev_file_write+0x0/0x30
[<c015e6e0>] blkdev_file_write+0x20/0x30
[<c0156770>] vfs_write+0xb0/0x110
[<c0156897>] sys_write+0x47/0x80
[<c010603f>] syscall_call+0x7/0xb
Code: Bad EIP value.
/mjt
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