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Keruskerfuerst
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PostPosted: Wed Mar 16, 2016 7:14 am    Post subject: What do these errors mean? Reply with quote

[ 5.640926] ata2.00: ATA-9: WDC WD4003FZEX-00Z4SA0, 01.01A01, max UDMA/133
[ 5.640931] ata2.00: 7814037168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 5.641470] ata2.00: configured for UDMA/133
[ 5.642179] ata3.00: ATAPI: HL-DT-ST BD-RE BH16NS55, 1.01, max UDMA/133
[ 5.642252] ata1.00: supports DRM functions and may not be fully accessible
[ 5.642296] ata1.00: READ LOG DMA EXT failed, trying unqueued
[ 5.642320] ata1.00: failed to get NCQ Send/Recv Log Emask 0x1

[ 5.642323] ata1.00: ATA-9: Samsung SSD 850 PRO 512GB, EXM01B6Q, max UDMA/133
[ 5.642326] ata1.00: 1000215216 sectors, multi 1: LBA48 NCQ (depth 31/32), AA
[ 5.642542] ata1.00: supports DRM functions and may not be fully accessible
[ 5.642580] ata1.00: failed to get NCQ Send/Recv Log Emask 0x1
[ 5.642632] ata1.00: configured for UDMA/133
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khayyam
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PostPosted: Wed Mar 16, 2016 9:49 am    Post subject: Reply with quote

Keruskerfuerst ...

you didn't say what kernel, seems to be similar to this, also see this.

best ... khay
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Keruskerfuerst
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PostPosted: Wed Mar 16, 2016 11:00 am    Post subject: Reply with quote

I am using kernel 4.1.5-pv form Suse Leap 42.1.

I am using CFQ scheduler.
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xaviermiller
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PostPosted: Wed Mar 16, 2016 11:02 am    Post subject: Reply with quote

Hi!,

What is the sata chipset?
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Keruskerfuerst
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PostPosted: Wed Mar 16, 2016 11:02 am    Post subject: Reply with quote

What has NCQ with a scheduler to do?
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xaviermiller
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PostPosted: Wed Mar 16, 2016 11:08 am    Post subject: Reply with quote

NCQ is a sata feature. On my nVidia nForce 430 chipset, I have to disable it.
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khayyam
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PostPosted: Wed Mar 16, 2016 11:12 am    Post subject: Reply with quote

Keruskerfuerst wrote:
I am using kernel 4.1.5-pv form Suse Leap 42.1.

Keruskerfuerst ... did you read the above linked bug reports?

Keruskerfuerst wrote:
I am using CFQ scheduler.

It doesn't having anything to do with the scheduler.

best ... khay
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s4e8
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PostPosted: Wed Mar 16, 2016 1:40 pm    Post subject: Reply with quote

This means your disk support encryption, but not NCQ TRIM.
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Martux
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PostPosted: Thu Mar 17, 2016 5:53 am    Post subject: Reply with quote

Using a Samsung 840 SSD? I stumbled upon some articles regarding that the other day.
Maybe this helps you further:
https://forums.gentoo.org/viewtopic-p-7479792.html
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Keruskerfuerst
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PostPosted: Sat Mar 19, 2016 9:28 am    Post subject: Reply with quote

I am using a Samsung 850 Pro 512 GB.

I think this error means, that die DMA access to the read log (of the filesystem is not enabled).

Now it is impossble to monitor, when the last read access to this disk has happend.
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s4e8
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PostPosted: Sat Mar 19, 2016 10:28 am    Post subject: Reply with quote

Keruskerfuerst wrote:
I am using a Samsung 850 Pro 512 GB.

I think this error means, that die DMA access to the read log (of the filesystem is not enabled).

Now it is impossble to monitor, when the last read access to this disk has happend.

This message means nothing, the DRM means drive support IEEE 1667 Storage SILO encryption.
The NCQ Send/Recv message means drive report NCQ Send/Recv, so kernel trying to read log page/mask, to determine which subcmds it supported, the most useful subcmds is NCQ TRIM. Kernel trying read log page use queued command and later unqueued, both failed. That means it has no NCQ TRIM feature.
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Keruskerfuerst
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PostPosted: Mon Mar 21, 2016 12:11 pm    Post subject: Reply with quote

I am using Intel X99 chipset.
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