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Groups > linux.debian.kernel > #51839

Bug#808563: really should be serious bug: data loss

Cross-posted to 2 groups.

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On 21/12/2015 17:20, 積丹尼 Dan Jacobson wrote:
> ata1.00: exception Emask 0x60 SAct 0x1c SErr 0x800 action 0x6 frozen
> ata1.00: irq_stat 0x20000000, host bus error
> ata1: SError: { HostInt }
> ata1.00: failed command: WRITE FPDMA QUEUED
> ata1.00: cmd 61/00:10:00:a8:10/08:00:26:00:00/40 tag 2 ncq 1048576 out
>           res 40/00:20:00:48:11/00:00:26:00:00/40 Emask 0x60 (host bus error)
> ata1.00: status: { DRDY }
> ata1.00: failed command: WRITE FPDMA QUEUED
> ata1.00: cmd 61/00:18:00:b0:10/08:00:26:00:00/40 tag 3 ncq 1048576 out
>           res 40/00:20:00:48:11/00:00:26:00:00/40 Emask 0x60 (host bus error)
> ata1.00: status: { DRDY }
> ata1.00: failed command: WRITE FPDMA QUEUED
> ata1.00: cmd 61/98:20:00:48:11/03:00:26:00:00/40 tag 4 ncq 471040 out
>           res 40/00:20:00:48:11/00:00:26:00:00/40 Emask 0x60 (host bus error)
> ata1.00: status: { DRDY }
> ata1: hard resetting link

I have a RAID1 (mdadm) with two SSD Samsung 850 EVO and these days i was 
affected by the same problem with linux-image-4.3.0-1-686-pae (4.3.3-2).
During these errors the system is somehow not responsive for about 30-60 
seconds but at the end the operation completes and all keep working 
without error or data loss. Mdadm doesn't notice nothing about these 
errors: the RAID doesn't get degraded.
But it's quite annoying because happens frequently: about one time every 
few minutes.

An excerpt of my errors:
---------------------------------
> dic 22 09:14:26 barone kernel: ata1.00: exception Emask 0x0 SAct 0x700 SErr 0x0 action 0x6 frozen
> dic 22 09:14:26 barone kernel: ata1.00: failed command: WRITE FPDMA QUEUED
> dic 22 09:14:26 barone kernel: ata1.00: cmd 61/20:40:00:b8:76/07:00:01:00:00/40 tag 8 ncq 933888 out
>                                         res 40/00:ff:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
> dic 22 09:14:26 barone kernel: ata1.00: status: { DRDY }
> dic 22 09:14:26 barone kernel: ata1.00: failed command: WRITE FPDMA QUEUED
> dic 22 09:14:26 barone kernel: ata1.00: cmd 61/e0:48:20:bf:76/08:00:01:00:00/40 tag 9 ncq 1163264 out
>                                         res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
> dic 22 09:14:26 barone kernel: ata1.00: status: { DRDY }
> dic 22 09:14:26 barone kernel: ata1.00: failed command: WRITE FPDMA QUEUED
> dic 22 09:14:26 barone kernel: ata1.00: cmd 61/98:50:00:18:77/0e:00:01:00:00/40 tag 10 ncq 1912832 out
>                                         res 40/00:ff:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
> dic 22 09:14:26 barone kernel: ata1.00: status: { DRDY }
> dic 22 09:14:26 barone kernel: ata1: hard resetting link
---------------------------------

Like you i have an 686-pae 32 bit kernel. Have you got an SSD disk or a 
rotational disk?

This morning i've tried linux-image-4.4.0-rc5-686 (4.4~rc5-1~exp1) from 
experimental and everything works fine without errors. Tomorrow i'll try 
the pae version from experimental to see if it works too.

Cesare.

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Bug#808563: really should be serious bug: data loss 積丹尼 Dan Jacobson <jidanni@jidanni.org> - 2015-12-21 02:30 +0100
  Bug#808563: really should be serious bug: data loss 積丹尼 Dan Jacobson <jidanni@jidanni.org> - 2015-12-21 17:20 +0100
  Bug#808563: really should be serious bug: data loss 積丹尼 Dan Jacobson <jidanni@jidanni.org> - 2015-12-21 17:30 +0100
    Bug#808563: really should be serious bug: data loss Cesare Leonardi <celeonar@gmail.com> - 2015-12-22 17:50 +0100
      Bug#808563: really should be serious bug: data loss 積丹尼 Dan Jacobson <jidanni@jidanni.org> - 2015-12-23 02:00 +0100
        Bug#808563: really should be serious bug: data loss Cesare Leonardi <celeonar@gmail.com> - 2015-12-23 09:40 +0100

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