Artem Bokhan wrote:
..
I'm trying to emulate OS behaviour when something goes wrong with sata
hard drive, for example, unrecoverable "bad blocks". By some reason I do
not want to use any sw/hw raid.
..
Note that you can create/remove *real* bad sectors on most drives
by using "hdparm --make-bad-sector" and "hdparm --repair-sector".
I took new hard drive, because it should contain (and it contains)
unreadable (not reallocated yet) sectros, and did
'dd if=/dev/sda of=/dev/null bs=1M'.
first run dd log (errors1.txt) looks OK, drive recovers, as I suppose,
approximately at time
cat
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:02.0/host4/target4:0:0/4:0:0:0/timeout
30
but when running dd second time, log looks strange (errors2.txt)
..
[75702.039300] ata5.00: NCQ disabled due to excessive errors
[75702.039382] res 41/00:08:00:a8:36/00:00:01:00:00/40 Emask 0x1 (device error)
[75702.039452] res 41/00:00:01:00:00/00:00:01:00:00/40 Emask 0x1 (device error)
[75702.039522] ata5: hard resetting link
[75702.936061] ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[75702.996080] ata5.00: max_sectors limited to 256 for NCQ
[75703.296058] ata5.00: max_sectors limited to 256 for NCQ
[75703.296061] ata5.00: configured for UDMA/133
[75703.296069] ata5: EH complete
[75703.296098] ------------[ cut here ]------------
[75703.296100] WARNING: at drivers/ata/libata-core.c:4732 ata_qc_issue+0x1ca/0x230 [libata]()
[75703.296102] Modules linked in: dm_mod autofs4 ipv6 iptable_filter ip_tables x_tables lp loop af_packet sr_mod cdrom container e1000e button parport_pc parport iTCO_wdt iTCO_vendor_support pcspkr shpchp pci_hotplug psmouse evdev ext3 jbd mbcache sg sd_mod pata_it8213 ata_piix pata_acpi floppy ata_generic sata_mv libata scsi_mod dock ehci_hcd uhci_hcd usbcore thermal processor fan thermal_sys fuse
[75703.296131] Pid: 2235, comm: scsi_eh_4 Tainted: G W 2.6.26.2.030320 #1
[75703.296133]
[75703.296133] Call Trace:
[75703.296140] [ext3:warn_on_slowpath+0x64/0x320] warn_on_slowpath+0x64/0xa0
[75703.296145] [sched_clock_cpu+0xc1/0x150] sched_clock_cpu+0xc1/0x150
[75703.296148] [usbcore:up+0x16/0xc0] up+0x16/0x50
[75703.296150] [release_console_sem+0x19d/0x1e0] release_console_sem+0x19d/0x1e0
[75703.296156] [sata_mv:mv_qc_issue+0x3c0/0x500] :sata_mv:mv_qc_issue+0x3c0/0x500
[75703.296159] [nommu_map_sg+0x6b/0xe0] nommu_map_sg+0x6b/0xe0
[75703.296170] [libata:ata_build_rw_tf+0xc1/0x290] :libata:ata_build_rw_tf+0xc1/0x290
[75703.296181] [libata:ata_qc_issue+0x1ca/0x230] :libata:ata_qc_issue+0x1ca/0x230
[75703.296193] [scsi_mod:scsi_done+0x0/0x20] :scsi_mod:scsi_done+0x0/0x20
[75703.296203] [libata:ata_scsi_translate+0xf8/0x190] :libata:ata_scsi_translate+0xf8/0x190
[75703.296213] [scsi_mod:scsi_done+0x0/0x20] :scsi_mod:scsi_done+0x0/0x20
[75703.296224] [sata_mv:ata_scsi_queuecmd+0xbb/0x240] :libata:ata_scsi_queuecmd+0xbb/0x240
[75703.296235] [scsi_mod:scsi_dispatch_cmd+0x11e/0x2e0] :scsi_mod:scsi_dispatch_cmd+0x11e/0x2e0
[75703.296246] [scsi_mod:scsi_request_fn+0x213/0x3c0] :scsi_mod:scsi_request_fn+0x213/0x3c0
[75703.296251] [scsi_mod:__blk_run_queue+0x43/0xd0] __blk_run_queue+0x43/0xd0
[75703.296253] [scsi_mod:blk_run_queue+0x28/0x50] blk_run_queue+0x28/0x50
[75703.296264] [scsi_mod:scsi_error_handler+0x0/0x570] :scsi_mod:scsi_error_handler+0x0/0x570
[75703.296274] [scsi_mod:scsi_run_host_queues+0x19/0x40] :scsi_mod:scsi_run_host_queues+0x19/0x40
[75703.296284] [scsi_mod:scsi_error_handler+0x1d9/0x570] :scsi_mod:scsi_error_handler+0x1d9/0x570
[75703.296296] [scsi_mod:scsi_error_handler+0x0/0x570] :scsi_mod:scsi_error_handler+0x0/0x570
[75703.296299] [kthread+0x4b/0x80] kthread+0x4b/0x80
[75703.296303] [child_rip+0xa/0x12] child_rip+0xa/0x12
[75703.296307] [kthread+0x0/0x80] kthread+0x0/0x80
[75703.296309] [child_rip+0x0/0x12] child_rip+0x0/0x12
[75703.296311]
[75703.296312] ---[ end trace 98cca564749c28e3 ]---
Mmmm.. something bad there, and also here:
[76898.778051] ------------[ cut here ]------------
[76898.778051] WARNING: at drivers/ata/libata-core.c:4732 ata_qc_issue+0x1ca/0x230 [libata]()
[76898.778051] Modules linked in: dm_mod autofs4 ipv6 iptable_filter ip_tables x_tables lp loop af_packet sr_mod cdrom container e1000e button parport_pc parport iTCO_wdt iTCO_vendor_support pcspkr shpchp pci_hotplug psmouse evdev ext3 jbd mbcache sg sd_mod pata_it8213 ata_piix pata_acpi floppy ata_generic sata_mv libata scsi_mod dock ehci_hcd uhci_hcd usbcore thermal processor fan thermal_sys fuse
[76898.778051] Pid: 4150, comm: dd Tainted: G W 2.6.26.2.030320 #1
[76898.778051]
[76898.778051] Call Trace:
[76898.778051] [ext3:warn_on_slowpath+0x64/0x320] warn_on_slowpath+0x64/0xa0
[76898.778051] [sg:sg_init_table+0x20/0x663e0] sg_init_table+0x20/0x50
[76898.778051] [scsi_mod:blk_rq_map_sg+0x7c/0x25e0] blk_rq_map_sg+0x7c/0x2b0
[76898.778051] [scsi_mod:scsi_sg_alloc+0x0/0x50] :scsi_mod:scsi_sg_alloc+0x0/0x50
[76898.778051] [scsi_mod:scsi_init_sgtable+0x54/0xb0] :scsi_mod:scsi_init_sgtable+0x54/0xb0
[76898.778051] [libata:ata_build_rw_tf+0xc1/0x290] :libata:ata_build_rw_tf+0xc1/0x290
[76898.778051] [libata:ata_qc_issue+0x1ca/0x230] :libata:ata_qc_issue+0x1ca/0x230
[76898.778051] [scsi_mod:scsi_done+0x0/0x20] :scsi_mod:scsi_done+0x0/0x20
[76898.778051] [libata:ata_scsi_translate+0xf8/0x190] :libata:ata_scsi_translate+0xf8/0x190
[76898.778051] [scsi_mod:scsi_done+0x0/0x20] :scsi_mod:scsi_done+0x0/0x20
[76898.778051] [sata_mv:ata_scsi_queuecmd+0xbb/0x240] :libata:ata_scsi_queuecmd+0xbb/0x240
[76898.778051] [scsi_mod:scsi_dispatch_cmd+0x11e/0x2e0] :scsi_mod:scsi_dispatch_cmd+0x11e/0x2e0
[76898.778051] [scsi_mod:scsi_request_fn+0x213/0x3c0] :scsi_mod:scsi_request_fn+0x213/0x3c0
[76898.778051] [sync_page_killable+0x0/0x40] sync_page_killable+0x0/0x40
[76898.778051] [floppy:generic_unplug_device+0x24/0xa0] generic_unplug_device+0x24/0x30
[76898.778051] [blk_unplug+0x35/0x70] blk_unplug+0x35/0x70
[76898.778051] [sync_page+0x2e/0x50] sync_page+0x2e/0x50
[76898.778051] [sync_page_killable+0x9/0x40] sync_page_killable+0x9/0x40
[76898.778051] [__wait_on_bit_lock+0x4a/0x80] __wait_on_bit_lock+0x4a/0x80
[76898.778051] [__lock_page_killable+0x5f/0x70] __lock_page_killable+0x5f/0x70
[76898.778051] [<ffffffff8024ac30>] wake_bit_function+0x0/0x30
[76898.778051] [fuse:generic_file_aio_read+0x36a/0x710] generic_file_aio_read+0x36a/0x570
[76898.778051] [ext3:do_sync_read+0xd9/0xbc0] do_sync_read+0xd9/0x120
[76898.778051] [<ffffffff8024ac00>] autoremove_wake_function+0x0/0x30
[76898.778051] [handle_mm_fault+0x575/0x810] handle_mm_fault+0x575/0x810
[76898.778051] [block_ioctl+0x1b/0x30] block_ioctl+0x1b/0x30
[76898.778051] [vfs_read+0xc5/0x180] vfs_read+0xc5/0x180
[76898.778051] [sys_read+0x53/0x90] sys_read+0x53/0x90
[76898.778051] [system_call_after_swapgs+0x7b/0x80] system_call_after_swapgs+0x7b/0x80
[76898.778051]
[76898.778051] ---[ end trace 98cca564749c28e3 ]---
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