Message-ID: <b1bc6a000608281725v2b17df67pcba33e77f95e36db@mail.gmail.com>
Date:	Mon, 28 Aug 2006 17:25:22 -0700
From:	"adam radford" <aradford@...il.com>
To:	"Jim Klimov" <klimov@....mipt.ru>
Cc:	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org
Subject: Re: 3ware glitches cause softraid rebuilds

Jim,

The 3ware driver reset code is doing msleep() polling with local interrupts
enabled... You shouldn't be getting soft lockups.  I'll do some investigation
into this.

BTW, this is a linux-scsi issue, not linux-kernel.

-Adam

On 8/28/06, Jim Klimov <klimov@....mipt.ru> wrote:
> Hello linux-kernel,
>
>   In July I wrote about problems with our Xeon/3ware fileservers which
>   occasionally dump a stacktrace, usually of smbd somewhere in iptables
>   routines, and reboot. Possibly this can be because one of PCI-X buses
>   is shared by the 3Ware controller and onboard Intel Gigabit chips,
>   and some interrupt events have a conflict? Regardless, it's not good
>   anyway :)
>
>   Then I went on vacation and didn't reply in a timely fashion to a
>   suggestion to build a kernel with more debugging info. Now I did it
>   with a newer kernel and wait for those bugs to repeat.
>
>   Meanwhile I found a new strange behavior, not seen before. Sometimes
>   a 3Ware card times out, and usually begins to verify itself. That's
>   "normal", or rather usual and not considered critical. But now in
>   exactly 10 seconds a soft lockup bug happens and the raid1 arrays
>   (made by the linux md driver from 2 system ide drives) are rebuilt.
>
>   So far this has hit us twice:
>
> Kernel: 2.6.17.11 vanilla
>
> [  423.569222] 3w-9xxx: scsi0: AEN: INFO (0x04:0x0029): Verify started:unit=1.
> [  429.688317] 3w-9xxx: scsi1: AEN: INFO (0x04:0x0029): Verify started:unit=0.
> [ 7042.478001] 3w-9xxx: scsi0: AEN: INFO (0x04:0x002B): Verify completed:unit=1.
> [ 8387.242115] 3w-9xxx: scsi1: AEN: INFO (0x04:0x003D): Verify paused:unit=0.
> [ 8402.400749] 3w-9xxx: scsi1: AEN: INFO (0x04:0x0029): Verify started:unit=0.
> [17184.832241] sd 1:0:0:0: WARNING: (0x06:0x002C): Command (0x88) timed out,
> resetting card.
> [17194.818537] BUG: soft lockup detected on CPU#0!
> [17194.823249]  <c010396f> show_trace+0xd/0xf  <c0103a5a>
> dump_stack+0x17/0x1b
> [17194.825809]  <c0136ec8> softlockup_tick+0xa9/0xc2  <c0124be3>
> run_local_timers+0x12/0x14
> [17194.825834]  <c01249e6> update_process_times+0x34/0x78  <c010f5e7>
> smp_apic_timer_interrupt+0x58/0x60
> [17194.825858]  <c010359c> apic_timer_interrupt+0x1c/0x24  <c02c8d51>
> twa_reset_sequence+0x37/0x1e1
> [17194.825884]  <c02c8c90> twa_reset_device_extension+0xe9/0x173  <c02c9003>
> twa_scsi_eh_reset+0x6e/0xe4
> [17194.825908]  <c02bcd91> scsi_try_host_reset+0x43/0xb0  <c02bcfc5>
> scsi_eh_host_reset+0x2f/0xf4
> [17194.825932]  <c02bd40d> scsi_eh_ready_devs+0x56/0x65  <c02bd5ba>
> scsi_unjam_host+0xa3/0x1d0
> [17194.825954]  <c02bd76a> scsi_error_handler+0x83/0x112  <c012dd24>
> kthread+0x9f/0xa4
> [17194.825977]  <c0101009> kernel_thread_helper+0x5/0xb
> [17240.675713] 3w-9xxx: scsi1: AEN: INFO (0x04:0x0029): Verify
> started:unit=0.
> [19019.998212] md: syncing RAID array md0
> [19019.998231] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19019.998243] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19019.998268] md: using 128k window, over a total of 500352 blocks.
> [19020.022029] md: delaying resync of md1 until md0 has finished resync
> (they share one or more physical units)
> [19020.079784] md: delaying resync of md10 until md1 has finished resync
> (they share one or more physical units)
> [19020.079813] md: delaying resync of md1 until md0 has finished resync
> (they share one or more physical units)
> [19020.265076] md: delaying resync of md11 until md10 has finished resync
> (they share one or more physical units)
> [19020.265106] md: delaying resync of md1 until md0 has finished resync
> (they share one or more physical units)
> [19020.265130] md: delaying resync of md10 until md1 has finished resync
> (they share one or more physical units)
> [19020.392908] md: delaying resync of md12 until md1 has finished resync
> (they share one or more physical units)
> [19020.392930] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.392953] md: delaying resync of md1 until md0 has finished resync
> (they share one or more physical units)
> [19020.392972] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.460745] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.468102] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19020.468122] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.468145] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19020.468162] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.468190] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.468210] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19020.476311] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19020.476334] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.476362] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19020.476382] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.476404] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19020.476434] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.476455] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19020.486455] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19020.486478] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.486503] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19020.486519] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.486542] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19020.486571] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.486593] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19020.486612] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19020.498362] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19020.498394] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19020.498414] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.498438] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19020.498457] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.498475] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19020.498509] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.498534] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19020.498553] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19020.612240] md: delaying resync of md9 until md12 has finished resync
> (they share one or more physical units)
> [19020.612309] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19020.612338] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19020.612371] md: delaying resync of md3 until md0 has finished resync
> (they share one or more physical units)
> [19020.612392] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19020.612412] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19020.612435] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19020.612456] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19020.612481] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19020.612501] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19047.955571] md: md0: sync done.
> [19047.996082] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19047.996105] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19047.996129] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19047.996143] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19047.996154] RAID1 conf printout:
> [19047.996171] md: syncing RAID array md3
> [19047.996179]  --- wd:2 rd:2
> [19047.996191]  disk 0, wo:0, o:1, dev:hdc1
> [19047.996199] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19047.996211]  disk 1, wo:0, o:1, dev:hda1
> [19047.996220] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19047.996233] md: using 128k window, over a total of 5859904 blocks.
> [19047.998803] md: delaying resync of md5 until md3 has finished resync
> (they share one or more physical units)
> [19047.998820] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19047.998833] md: delaying resync of md9 until md12 has finished resync
> (they share one or more physical units)
> [19048.005192] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19048.005209] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19363.392599] md: md3: sync done.
> [19363.453882] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19363.453894] md: delaying resync of md9 until md12 has finished resync
> (they share one or more physical units)
> [19363.453926] md: delaying resync of md1 until md5 has finished resync
> (they share one or more physical units)
> [19363.453934] md: syncing RAID array md5
> [19363.453942] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19363.453950] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19363.453963] md: using 128k window, over a total of 3906368 blocks.
> [19363.453970] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19363.453985] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19363.454003] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19363.454122] RAID1 conf printout:
> [19363.455970] md: delaying resync of md12 until md5 has finished resync
> (they share one or more physical units)
> [19363.455985] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19363.457941]  --- wd:2 rd:2
> [19363.461140]  disk 0, wo:0, o:1, dev:hdc3
> [19363.465654]  disk 1, wo:0, o:1, dev:hda3
> [19514.855587] md: md5: sync done.
> [19514.894392] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19514.894431] md: delaying resync of md12 until md1 has finished resync
> (they share one or more physical units)
> [19514.894467] md: syncing RAID array md1
> [19514.894476] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19514.894489] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19514.894497] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19514.894508] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19514.894518] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19514.894531] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19514.894540] md: using 128k window, over a total of 2000256 blocks.
> [19514.894628] RAID1 conf printout:
> [19514.896747] md: delaying resync of md9 until md12 has finished resync
> (they share one or more physical units)
> [19514.898392]  --- wd:2 rd:2
> [19514.901370]  disk 0, wo:0, o:1, dev:hdc5
> [19514.905901]  disk 1, wo:0, o:1, dev:hda5
> [19590.739467] md: md1: sync done.
> [19590.797061] md: delaying resync of md10 until md12 has finished resync
> (they share one or more physical units)
> [19590.797080] md: delaying resync of md9 until md12 has finished resync
> (they share one or more physical units)
> [19590.797120] md: delaying resync of md7 until md12 has finished resync
> (they share one or more physical units)
> [19590.797131] md: syncing RAID array md12
> [19590.797142] md: delaying resync of md6 until md12 has finished resync
> (they share one or more physical units)
> [19590.797162] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19590.797174] md: delaying resync of md11 until md12 has finished resync
> (they share one or more physical units)
> [19590.797192] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19590.797209] md: using 128k window, over a total of 5244992 blocks.
> [19590.797232] RAID1 conf printout:
> [19590.799289] md: delaying resync of md8 until md12 has finished resync
> (they share one or more physical units)
> [19590.800846]  --- wd:2 rd:2
> [19590.803920]  disk 0, wo:0, o:1, dev:hdc2
> [19590.808568]  disk 1, wo:0, o:1, dev:hda2
> [19942.989053] md: md12: sync done.
> [19943.085278] md: delaying resync of md8 until md7 has finished resync
> (they share one or more physical units)
> [19943.085291] md: delaying resync of md6 until md11 has finished resync
> (they share one or more physical units)
> [19943.085315] md: delaying resync of md9 until md8 has finished resync
> (they share one or more physical units)
> [19943.085340] md: delaying resync of md11 until md10 has finished resync
> (they share one or more physical units)
> [19943.085377] RAID1 conf printout:
> [19943.085386] md: syncing RAID array md7
> [19943.085396] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [19943.085404] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [19943.085417] md: using 128k window, over a total of 1953408 blocks.
> [19943.086535] md: delaying resync of md10 until md9 has finished resync
> (they share one or more physical units)
> [19943.088928]  --- wd:2 rd:2
> [19943.091916]  disk 0, wo:0, o:1, dev:hdc12
> [19943.096249]  disk 1, wo:0, o:1, dev:hda12
> [20033.019114] md: md7: sync done.
> [20033.090440] md: delaying resync of md6 until md11 has finished resync
> (they share one or more physical units)
> [20033.090460] md: syncing RAID array md8
> [20033.090470] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [20033.090477] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [20033.090489] md: using 128k window, over a total of 5859904 blocks.
> [20033.090571] md: delaying resync of md10 until md9 has finished resync
> (they share one or more physical units)
> [20033.090589] md: delaying resync of md9 until md8 has finished resync
> (they share one or more physical units)
> [20033.090602] md: delaying resync of md11 until md10 has finished resync
> (they share one or more physical units)
> [20033.090646] RAID1 conf printout:
> [20033.094083]  --- wd:2 rd:2
> [20033.097113]  disk 0, wo:0, o:1, dev:hdc7
> [20033.101318]  disk 1, wo:0, o:1, dev:hda7
> [20283.332772] md: md8: sync done.
> [20283.392384] md: delaying resync of md11 until md10 has finished resync
> (they share one or more physical units)
> [20283.392411] md: delaying resync of md6 until md11 has finished resync
> (they share one or more physical units)
> [20283.392432] RAID1 conf printout:
> [20283.392479] md: syncing RAID array md9
> [20283.392495] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [20283.392521] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [20283.392557] md: using 128k window, over a total of 3906368 blocks.
> [20283.395898] md: delaying resync of md10 until md9 has finished resync
> (they share one or more physical units)
> [20283.396045]  --- wd:2 rd:2
> [20283.399015]  disk 0, wo:0, o:1, dev:hdc8
> [20283.403257]  disk 1, wo:0, o:1, dev:hda8
> [20452.540323] md: md9: sync done.
> [20452.610616] md: delaying resync of md6 until md11 has finished resync
> (they share one or more physical units)
> [20452.610633] md: syncing RAID array md10
> [20452.610661] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [20452.610669] RAID1 conf printout:
> [20452.610679]  --- wd:2 rd:2
> [20452.610692]  disk 0, wo:0, o:1, dev:hdc9
> [20452.610706]  disk 1, wo:0, o:1, dev:hda9
> [20452.611783] md: delaying resync of md11 until md10 has finished resync
> (they share one or more physical units)
> [20452.625535] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [20452.625576] md: using 128k window, over a total of 3906368 blocks.
> [20608.982515] md: md10: sync done.
> [20609.027444] md: delaying resync of md6 until md11 has finished resync
> (they share one or more physical units)
> [20609.027460] md: syncing RAID array md11
> [20609.027473] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [20609.027485] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [20609.027503] md: using 128k window, over a total of 65430144 blocks.
> [20609.027558] RAID1 conf printout:
> [20609.031138]  --- wd:2 rd:2
> [20609.034093]  disk 0, wo:0, o:1, dev:hdc10
> [20609.038435]  disk 1, wo:0, o:1, dev:hda10
> [22231.702114] sd 1:0:0:0: WARNING: (0x06:0x002C): Command (0x88) timed out,
> resetting card.
> [22241.688436] BUG: soft lockup detected on CPU#1!
> [22241.693331]  <c010396f> show_trace+0xd/0xf  <c0103a5a>
> dump_stack+0x17/0x1b
> [22241.695899]  <c0136ec8> softlockup_tick+0xa9/0xc2  <c0124be3>
> run_local_timers+0x12/0x14
> [22241.695929]  <c01249e6> update_process_times+0x34/0x78  <c010f5e7>
> smp_apic_timer_interrupt+0x58/0x60
> [22241.695961]  <c010359c> apic_timer_interrupt+0x1c/0x24  <c02c8d51>
> twa_reset_sequence+0x37/0x1e1
> [22241.695994]  <c02c8c90> twa_reset_device_extension+0xe9/0x173  <c02c9003>
> twa_scsi_eh_reset+0x6e/0xe4
> [22241.696027]  <c02bcd91> scsi_try_host_reset+0x43/0xb0  <c02bcfc5>
> scsi_eh_host_reset+0x2f/0xf4
> [22241.696059]  <c02bd40d> scsi_eh_ready_devs+0x56/0x65  <c02bd5ba>
> scsi_unjam_host+0xa3/0x1d0
> [22241.696086]  <c02bd76a> scsi_error_handler+0x83/0x112  <c012dd24>
> kthread+0x9f/0xa4
> [22241.696119]  <c0101009> kernel_thread_helper+0x5/0xb
> [22335.486623] 3w-9xxx: scsi1: AEN: INFO (0x04:0x0029): Verify
> started:unit=0.
> [22887.014006] 3w-9xxx: scsi1: AEN: INFO (0x04:0x002B): Verify
> completed:unit=0.
> [23994.650143] md: md11: sync done.
> [23994.804031] md: syncing RAID array md6
> [23994.804051] RAID1 conf printout:
> [23994.804065] md: minimum _guaranteed_ reconstruction speed: 1000
> KB/sec/disc.
> [23994.804075] md: using maximum available idle IO bandwidth (but not more
> than 200000 KB/sec) for reconstruction.
> [23994.804094] md: using 128k window, over a total of 1953408 blocks.
> [23994.808154]  --- wd:2 rd:2
> [23994.811253]  disk 0, wo:0, o:1, dev:hdc11
> [23994.815967]  disk 1, wo:0, o:1, dev:hda11
> [24225.817451] md: md6: sync done.
> [24225.939633] RAID1 conf printout:
> [24225.943358]  --- wd:2 rd:2
> [24225.946614]  disk 0, wo:0, o:1, dev:hdc6
> [24225.950917]  disk 1, wo:0, o:1, dev:hda6
>
>
> --
> Best regards,
>  Jim Klimov                          mailto:klimov@....mipt.ru
>
> -
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