Not sure if Myth is to blame, XFS, or something else but I thought I'd at least make a note incase it comes up again in the future. Myth did start the cascade, but I think it was an XFS problem. Once this started, the system would lock a console on a sync, would not shut down, would not kill the mythbackend process even with -9. This is the first time I've ever seen this, running a cvs build from 2 months ago, system hardware has been the same for 2 years. No problems ever like this. No software changes for 2 months at all. After a hard reboot, XFS did some auto-fixing and it's running fine. I've been running XFS for 3 years and never had single problem. ;) No, not planning on changing either.
Comments? --Brandon [snip] Aug 21 20:25:47 mindseye kernel: mythbackend: page allocation failure. order:4, mode:0x50 Aug 21 20:25:47 mindseye kernel: [__alloc_pages+728/848] __alloc_pages+0x2d8/0x350 Aug 21 20:25:47 mindseye kernel: [__get_free_pages+37/64] __get_free_pages+0x25/0x40 Aug 21 20:25:47 mindseye kernel: [kmem_getpages+32/176] kmem_getpages+0x20/0xb0 Aug 21 20:25:47 mindseye kernel: [cache_grow+182/368] cache_grow+0xb6/0x170 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2894788/6133658] xfs_alloc_delrec+0x111/0xf20 [xfs] Aug 21 20:25:47 mindseye kernel: [cache_alloc_refill+342/544] cache_alloc_refill+0x156/0x220 Aug 21 20:25:47 mindseye kernel: [__kmalloc+116/128] __kmalloc+0x74/0x80 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3291468/6133658] kmem_alloc+0x59/0xc0 [xfs] Aug 21 20:25:47 mindseye kernel: [unlock_page+31/48] unlock_page+0x1f/0x30 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3291758/6133658] kmem_realloc+0x2b/0xa0 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3149765/6133658] xfs_iext_realloc+0x112/0x160 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2969240/6133658] xfs_bmap_insert_exlist+0x35/0x90 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2954167/6133658] xfs_bmap_add_extent_hole_delay+0x394/0x5c0 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2996568/6133658] xfs_bmbt_insrec+0x255/0x670 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2942421/6133658] xfs_bmap_add_extent+0x412/0x4e0 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3223116/6133658] xfs_mod_incore_sb+0x39/0x60 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2978022/6133658] xfs_bmapi+0x733/0x1600 [xfs] Aug 21 20:25:47 mindseye kernel: [buffered_rmqueue+245/464] buffered_rmqueue+0xf5/0x1d0 Aug 21 20:25:47 mindseye kernel: [__alloc_pages+746/848] __alloc_pages+0x2ea/0x350 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+2976860/6133658] xfs_bmapi+0x2a9/0x1600 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3163139/6133658] xfs_iomap_write_delay+0x520/0x6f0 [xfs] Aug 21 20:25:47 mindseye kernel: [as_add_request+422/528] as_add_request+0x1a6/0x210 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3158568/6133658] xfs_imap_to_bmap+0x35/0x2a0 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3240284/6133658] xfs_trans_unlocked_item+0x39/0x60 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3160024/6133658] xfs_iomap+0x345/0x550 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3297469/6133658] linvfs_get_block_core+0xaa/0x2b0 [xfs] Aug 21 20:25:47 mindseye kernel: [find_get_page+45/96] find_get_page+0x2d/0x60 Aug 21 20:25:47 mindseye kernel: [set_bh_page+72/80] set_bh_page+0x48/0x50 Aug 21 20:25:47 mindseye kernel: [create_buffers+106/176] create_buffers+0x6a/0xb0 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3298058/6133658] linvfs_get_block+0x47/0x50 [xfs] Aug 21 20:25:47 mindseye kernel: [__block_prepare_write+518/1040] __block_prepare_write+0x206/0x410 Aug 21 20:25:47 mindseye kernel: [block_prepare_write+52/80] block_prepare_write+0x34/0x50 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3297987/6133658] linvfs_get_block+0x0/0x50 [xfs] Aug 21 20:25:47 mindseye kernel: [generic_file_aio_write_nolock+939/2864] generic_file_aio_write_nolock+0x3ab/0xb30 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3297987/6133658] linvfs_get_block+0x0/0x50 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+1605664/6133658] do_ide_request+0x1d/0x30 [ide_core] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3155725/6133658] xfs_ichgtime+0x10a/0x10c [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3240284/6133658] xfs_trans_unlocked_item+0x39/0x60 [xfs] Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3327333/6133658] xfs_write+0x272/0x890 [xfs] Aug 21 20:25:47 mindseye kernel: [schedule+654/1168] schedule+0x28e/0x490 Aug 21 20:25:47 mindseye kernel: [__crc_get_wchan+3308894/6133658] linvfs_write+0xab/0x120 [xfs] Aug 21 20:25:47 mindseye kernel: [do_sync_write+132/176] do_sync_write+0x84/0xb0 Aug 21 20:25:47 mindseye kernel: [do_sync_write+0/176] do_sync_write+0x0/0xb0 Aug 21 20:25:47 mindseye kernel: [vfs_write+216/320] vfs_write+0xd8/0x140 Aug 21 20:25:47 mindseye kernel: [copy_to_user+62/80] copy_to_user+0x3e/0x50 Aug 21 20:25:47 mindseye kernel: [sys_write+81/128] sys_write+0x51/0x80 Aug 21 20:25:47 mindseye kernel: [syscall_call+7/11] syscall_call+0x7/0xb Aug 21 20:48:27 mindseye kernel: mythbackend: page allocation failure. order:4, mode:0x50 Aug 21 20:48:28 mindseye kernel: [__alloc_pages+728/848] __alloc_pages+0x2d8/0x350 Aug 21 20:48:28 mindseye kernel: [__get_free_pages+37/64] __get_free_pages+0x25/0x40 Aug 21 20:48:28 mindseye kernel: [kmem_getpages+32/176] kmem_getpages+0x20/0xb0 Aug 21 20:48:28 mindseye kernel: [cache_grow+182/368] cache_grow+0xb6/0x170 Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+1639347/6133658] __ide_dma_read+0xd0/0xe0 [ide_core] Aug 21 20:48:28 mindseye kernel: [cache_alloc_refill+342/544] cache_alloc_refill+0x156/0x220 Aug 21 20:48:28 mindseye kernel: [__kmalloc+116/128] __kmalloc+0x74/0x80 Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3291468/6133658] kmem_alloc+0x59/0xc0 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3142722/6133658] xfs_iread_extents+0x4f/0x110 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+2986294/6133658] xfs_bunmapi+0xff3/0x1090 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3236986/6133658] xfs_trans_unreserve_and_mod_sb+0x177/0x180 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3303673/6133658] pagebuf_rele+0x106/0x120 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3246046/6133658] xfs_trans_unlock_items+0x5b/0xe0 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3175812/6133658] xfs_log_release_iclog+0x21/0x60 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3185038/6133658] xlog_grant_log_space+0x12b/0x380 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3244912/6133658] xfs_trans_log_inode+0x2d/0x70 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3145044/6133658] xfs_itruncate_finish+0x1f1/0x460 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3269300/6133658] xfs_inactive+0x501/0x560 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3336537/6133658] vn_rele+0xc6/0xe0 [xfs] Aug 21 20:48:28 mindseye kernel: [__crc_get_wchan+3330795/6133658] linvfs_clear_inode+0x18/0x30 [xfs] Aug 21 20:48:28 mindseye kernel: [clear_inode+210/256] clear_inode+0xd2/0x100 Aug 21 20:48:28 mindseye kernel: [generic_delete_inode+308/368] generic_delete_inode+0x134/0x170 Aug 21 20:48:28 mindseye kernel: [iput+98/128] iput+0x62/0x80 Aug 21 20:48:28 mindseye kernel: [sys_unlink+272/320] sys_unlink+0x110/0x140 Aug 21 20:48:28 mindseye kernel: [syscall_call+7/11] syscall_call+0x7/0xb Aug 21 20:48:28 mindseye kernel: mythbackend: page allocation failure. order:4, mode:0x50 Aug 21 20:48:28 mindseye kernel: [__alloc_pages+728/848] __alloc_pages+0x2d8/0x350 Aug 21 20:48:28 mindseye kernel: [__get_free_pages+37/64] __get_free_pages+0x25/0x40 >
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