>> Sorry for my late answer, but i had to sort this out first.
>> After replacing the first PSU with a new Corsair 650W the power no
>> longer fluctuated more than 0,01 V (and this only when booting up the
>> drives...) I did a full resync on both raid arrays and got no more
>> errors or resets, but there were some inconsitencies during sync and the
>> xfs filesystem on both arrays had to be repaired. Are these problems
>> caused by the pm resets ?
>>
>
> libata EH won't lose any data as long as the hardware doesn't. If power
> fluctuates causing your drive to briefly power down - this does happen and
> you can hear the drive doing emergency unload when it happens, the data in
> write buffer can be lost. On coming back, all that libata can know is
> that the PHY suffered brief connection loss, so it resets the device and
> goes on, so the data in the cache is lost now. It's basically pulling the
> power plug from the harddrive while write is going on and connecting it
> back quickly. You're bound to lose data.
>
After I got the new PSU and the raid was in full sync without any error
for 48h, I thought all problems were gone. Today the sata errors
reappeared and whenever the load is high enough I get the following:
ata10.00: failed to read SCR 1 (Emask=0x40)
ata10.01: failed to read SCR 1 (Emask=0x40)
ata10.02: failed to read SCR 1 (Emask=0x40)
ata10.03: failed to read SCR 1 (Emask=0x40)
ata10.04: failed to read SCR 1 (Emask=0x40)
ata10.05: failed to read SCR 1 (Emask=0x40)
ata10.00: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.01: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.02: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.02: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata10.02: status: { DRDY }
ata10.03: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.04: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.05: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.15: hard resetting link
ata10.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
ata10.00: hard resetting link
ata10.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.01: hard resetting link
ata10.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.02: hard resetting link
ata10.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.03: hard resetting link
ata10.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.04: hard resetting link
ata10.04: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.05: hard resetting link
ata10.05: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata10.00: configured for UDMA/100
ata10.01: configured for UDMA/100
ata10.02: configured for UDMA/100
ata10.03: configured for UDMA/100
ata10.04: configured for UDMA/100
ata10: EH complete
sd 9:0:0:0: [sdl] 976773168 512-byte hardware sectors (500108 MB)
sd 9:0:0:0: [sdl] Write Protect is off
sd 9:0:0:0: [sdl] Mode Sense: 00 3a 00 00
sd 9:0:0:0: [sdl] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:1:0:0: [sdm] 976773168 512-byte hardware sectors (500108 MB)
sd 9:1:0:0: [sdm] Write Protect is off
sd 9:1:0:0: [sdm] Mode Sense: 00 3a 00 00
sd 9:1:0:0: [sdm] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:2:0:0: [sdn] 976773168 512-byte hardware sectors (500108 MB)
sd 9:2:0:0: [sdn] Write Protect is off
sd 9:2:0:0: [sdn] Mode Sense: 00 3a 00 00
sd 9:2:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:3:0:0: [sdo] 976773168 512-byte hardware sectors (500108 MB)
sd 9:3:0:0: [sdo] Write Protect is off
sd 9:3:0:0: [sdo] Mode Sense: 00 3a 00 00
sd 9:3:0:0: [sdo] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:4:0:0: [sdp] 976773168 512-byte hardware sectors (500108 MB)
sd 9:4:0:0: [sdp] Write Protect is off
sd 9:4:0:0: [sdp] Mode Sense: 00 3a 00 00
sd 9:4:0:0: [sdp] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:0:0:0: [sdl] 976773168 512-byte hardware sectors (500108 MB)
sd 9:0:0:0: [sdl] Write Protect is off
sd 9:0:0:0: [sdl] Mode Sense: 00 3a 00 00
sd 9:0:0:0: [sdl] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:1:0:0: [sdm] 976773168 512-byte hardware sectors (500108 MB)
sd 9:1:0:0: [sdm] Write Protect is off
sd 9:1:0:0: [sdm] Mode Sense: 00 3a 00 00
sd 9:1:0:0: [sdm] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:2:0:0: [sdn] 976773168 512-byte hardware sectors (500108 MB)
sd 9:2:0:0: [sdn] Write Protect is off
sd 9:2:0:0: [sdn] Mode Sense: 00 3a 00 00
sd 9:2:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:3:0:0: [sdo] 976773168 512-byte hardware sectors (500108 MB)
sd 9:3:0:0: [sdo] Write Protect is off
sd 9:3:0:0: [sdo] Mode Sense: 00 3a 00 00
sd 9:3:0:0: [sdo] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:4:0:0: [sdp] 976773168 512-byte hardware sectors (500108 MB)
sd 9:4:0:0: [sdp] Write Protect is off
sd 9:4:0:0: [sdp] Mode Sense: 00 3a 00 00
sd 9:4:0:0: [sdp] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
ata10.00: failed to read SCR 1 (Emask=0x40)
ata10.01: failed to read SCR 1 (Emask=0x40)
ata10.02: failed to read SCR 1 (Emask=0x40)
ata10.03: failed to read SCR 1 (Emask=0x40)
ata10.04: failed to read SCR 1 (Emask=0x40)
ata10.05: failed to read SCR 1 (Emask=0x40)
ata10.00: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.01: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.02: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.02: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 2 cdb 0x0 data 0
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata10.02: status: { DRDY }
ata10.03: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.04: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.05: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
ata10.15: hard resetting link
ata10.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
ata10.00: hard resetting link
ata10.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.01: hard resetting link
ata10.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.02: hard resetting link
ata10.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.03: hard resetting link
ata10.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.04: hard resetting link
ata10.04: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata10.05: hard resetting link
ata10.05: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata10.00: configured for UDMA/100
ata10.01: configured for UDMA/100
ata10.02: configured for UDMA/100
ata10.03: configured for UDMA/100
ata10.04: configured for UDMA/100
ata10: EH complete
sd 9:0:0:0: [sdl] 976773168 512-byte hardware sectors (500108 MB)
sd 9:0:0:0: [sdl] Write Protect is off
sd 9:0:0:0: [sdl] Mode Sense: 00 3a 00 00
sd 9:0:0:0: [sdl] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:1:0:0: [sdm] 976773168 512-byte hardware sectors (500108 MB)
sd 9:1:0:0: [sdm] Write Protect is off
sd 9:1:0:0: [sdm] Mode Sense: 00 3a 00 00
sd 9:1:0:0: [sdm] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:2:0:0: [sdn] 976773168 512-byte hardware sectors (500108 MB)
sd 9:2:0:0: [sdn] Write Protect is off
sd 9:2:0:0: [sdn] Mode Sense: 00 3a 00 00
sd 9:2:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:3:0:0: [sdo] 976773168 512-byte hardware sectors (500108 MB)
sd 9:3:0:0: [sdo] Write Protect is off
sd 9:3:0:0: [sdo] Mode Sense: 00 3a 00 00
sd 9:3:0:0: [sdo] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:4:0:0: [sdp] 976773168 512-byte hardware sectors (500108 MB)
sd 9:4:0:0: [sdp] Write Protect is off
sd 9:4:0:0: [sdp] Mode Sense: 00 3a 00 00
sd 9:4:0:0: [sdp] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:0:0:0: [sdl] 976773168 512-byte hardware sectors (500108 MB)
sd 9:0:0:0: [sdl] Write Protect is off
sd 9:0:0:0: [sdl] Mode Sense: 00 3a 00 00
sd 9:0:0:0: [sdl] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:1:0:0: [sdm] 976773168 512-byte hardware sectors (500108 MB)
sd 9:1:0:0: [sdm] Write Protect is off
sd 9:1:0:0: [sdm] Mode Sense: 00 3a 00 00
sd 9:1:0:0: [sdm] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:2:0:0: [sdn] 976773168 512-byte hardware sectors (500108 MB)
sd 9:2:0:0: [sdn] Write Protect is off
sd 9:2:0:0: [sdn] Mode Sense: 00 3a 00 00
sd 9:2:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:3:0:0: [sdo] 976773168 512-byte hardware sectors (500108 MB)
sd 9:3:0:0: [sdo] Write Protect is off
sd 9:3:0:0: [sdo] Mode Sense: 00 3a 00 00
sd 9:3:0:0: [sdo] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 9:4:0:0: [sdp] 976773168 512-byte hardware sectors (500108 MB)
sd 9:4:0:0: [sdp] Write Protect is off
sd 9:4:0:0: [sdp] Mode Sense: 00 3a 00 00
sd 9:4:0:0: [sdp] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
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