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Questions[sata](ubuntu)

Martin Hope
NeroAngelo
Asked: 2020-04-11 04:57:53 +0800 CST
  • 4

A few months ago, I started seeing these errors on my computer:

[39441.061910] ata3.00: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
[39441.061917] ata3.01: exception Emask 0x100 SAct 0xe SErr 0x0 action 0x6 frozen

What I did was replace the old SATA cables with new ones and the errors stopped popping up.

However today the exact same error messages were shown when my computer crashed while I was doing something important. I was able to see these errors when I switched to tty1.

Now I'm pretty sure, that it isn't my cable's fault as it is only 2-3 weeks old. What I did was to disable NCQ by typing:

GRUB_CMDLINE_LINUX="libata.force=noncq

in my /etc/default/grub file and BOY it worked like a charm. However, I'm a little bit concerned that it might have a bad effect on my computer because Wikipedia states NCQ like this:

This(NCQ) can reduce the amount of unnecessary drive head movement, resulting in increased performance (and slightly decreased wear of the drive) for workloads where multiple simultaneous read/write requests are outstanding, most often occurring in server-type applications.

Will disabling NCQ have a bad effect on my computer overall?

hardware hard-drive sata
Martin Hope
Ravexina
Asked: 2019-06-09 10:49:58 +0800 CST
  • 6

My laptop was working fine and its load average was between 0.2 - 0.5 (and around 0.02 while doing nothing) until I decide to upgrade it with an SSD.

First I replaced my HDD with SSD, moving HDD into a HDD Caddy, removing the optical drive and putting HDD there instead.

  • Both my SSD and HDD are capable of working with SATA III interfaces.

  • However my HDD is working at SATA 2 mode: 

    sudo smartctl -a /dev/sdb | grep SATA
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)

  • Seems my optical drive interface is SATA 2.

Problem

The problem is whenever there is something in HDD Caddy (SSD, HDD, Doesn't matter) load average while doing nothing is around 1.5 - 2 and while system is just booted up is around 4.

What did I done?

  • I have tried any combination of setup nothing takes any effects.

What else?

  • CPU usage is normal and no process is consuming the CPU.
  • If I only use one disk as the main hard drive load average is normal.
  • If I even use one disk at the optical drive place, I get high load average.
ssd hard-drive sata optical
Martin Hope
Marcos Junior
Asked: 2012-05-09 09:15:18 +0800 CST
  • 44

I'm getting these errors ramdomly, and I don't know if its normal or not. 

[39441.061856] ata3.00: failed to read SCR 1 (Emask=0x40)
[39441.061866] ata3.01: failed to read SCR 1 (Emask=0x40)
[39441.061892] ata3.15: exception Emask 0x10 SAct 0x0 SErr 0x280100 action 0x6 frozen
[39441.061897] ata3.15: irq_stat 0x08000000, interface fatal error
[39441.061904] ata3.15: SError: { UnrecovData 10B8B BadCRC }
[39441.061910] ata3.00: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen
[39441.061917] ata3.01: exception Emask 0x100 SAct 0xe SErr 0x0 action 0x6 frozen
[39441.061923] ata3.01: failed command: READ FPDMA QUEUED
[39441.061933] ata3.01: cmd 60/a8:08:b0:48:62/00:00:00:00:00/40 tag 1 ncq 86016 in
[39441.061940] ata3.01: status: { DRDY }
[39441.061944] ata3.01: failed command: READ FPDMA QUEUED
[39441.061953] ata3.01: cmd 60/a8:10:b0:49:62/00:00:00:00:00/40 tag 2 ncq 86016 in
[39441.061959] ata3.01: status: { DRDY }
[39441.061963] ata3.01: failed command: READ FPDMA QUEUED
[39441.061972] ata3.01: cmd 60/58:18:58:4a:62/00:00:00:00:00/40 tag 3 ncq 45056 in
[39441.061978] ata3.01: status: { DRDY }
[39441.061987] ata3.15: hard resetting link
[39441.608302] ata3.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[39441.609090] ata3.00: hard resetting link
[39441.929246] ata3.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[39441.929333] ata3.01: hard resetting link
[39442.249184] ata3.01: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[39442.263242] ata3.00: configured for UDMA/133
[39442.277570] ata3.01: configured for UDMA/133
[39442.277725] ata3: EH complete

I'm also pasting smartctl -a for sda, sdb and sdc.

Thanks in advance for your help.

hard-drive external-hdd smart dmesg sata
Martin Hope
thonixx
Asked: 2012-03-02 11:18:46 +0800 CST
  • 10

My new 1,5 TB ext4 Hard Disk makes mysterious noises and fails to read and write. But not always. Sometimes it just works. But then I get those following errors. Does anyone know a solution for that or is my new WD Caviar Black 1.5 TB hard disk broken?

[  551.162286] ata7: SATA link down (SStatus 0 SControl 310)
[  551.162294] ata7.00: link offline, clearing class 1 to NONE
[  551.178223] ata7: EH complete
[  551.190802] ata7: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
[  551.190807] ata7: irq_stat 0x00000040, connection status changed
[  551.190811] ata7: SError: { CommWake DevExch }
[  551.190818] ata7: limiting SATA link speed to 1.5 Gbps
[  551.190822] ata7: hard resetting link

Update Mainboard P7P55D LE: http://www.asus.de/Motherboards/Intel_Socket_1156/P7P55D_LE/#specifications

disk sata
Martin Hope
Richard Ayotte
Asked: 2012-02-16 17:05:13 +0800 CST
  • 6

I have a Mediasonic Smart Drive SuperSpeed 3.5" SATA HDD External Enclosure - USB 3.0 [HD6-SU3-BK]. It has the VIA VL700 - Super-Speed USB 3.0 to SATA controller which is supposed to support 3TB drives. The drive is an Advanced Format 3TB WDC WD30EZRX. I'm running 64bit Oneiric with the standard 3.0.0-16-generic kernel.

usb controller:
                       ATI SB700/SB800 USB OHCI0 Controller
                       ATI SB700/SB800 USB EHCI Controller
                       ATI SB700/SB800 USB OHCI0 Controller
                       ATI SB700/SB800 USB EHCI Controller
                       ATI SB700/SB800 USB OHCI2 Controller
                       ATI SB700/SB800 USB OHCI0 Controller
                       ATI SB700/SB800 USB EHCI Controller
                       NEC USB Controller

When the drive is connected to the internal SATA controller, I can access the whole 3TB, partition it with a GPT table and format it using XFS. When I put the drive in the enclosure, I can only see 746.52 GB.

Here's how the kernel sees the drive when it's connected to the internal SATA interface.

2.855426] scsi 6:0:0:0: Direct-Access     ATA      WDC WD30EZRX-00M 80.0 PQ: 0 ANSI: 5
[    2.855608] sd 6:0:0:0: [sdc] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
[    2.855611] sd 6:0:0:0: [sdc] 4096-byte physical blocks
[    2.855619] sd 6:0:0:0: Attached scsi generic sg2 type 0

Here's how the kernel sees the drive when connected via the USB enclosure.

[605703.368137] usb 2-5: new high speed USB device number 3 using ehci_hcd
[605703.830770] Initializing USB Mass Storage driver...
[605703.831288] scsi10 : usb-storage 2-5:1.0
[605703.831626] usbcore: registered new interface driver usb-storage
[605703.831632] USB Mass Storage support registered.
[605719.251982] scsi 10:0:0:0: Direct-Access     WDC WD30 EZRX-00MMMB0     80.0 PQ: 0 ANSI: 2
[605719.254314] sd 10:0:0:0: Attached scsi generic sg2 type 0
[605719.258115] sd 10:0:0:0: [sdc] 1565565869 512-byte logical blocks: (801 GB/746 GiB)

See how internally there's 5,860,533,168 logical blocks and externally only 1,565,565,869.

I also noticed that SATA reports WDC WD30EZRX-00M 80.0 PQ: 0 ANSI: 5 while USB reports WDC WD30 EZRX-00MMMB0 80.0 PQ: 0 ANSI: 2 What's the difference between the two? Could this be the problem?

When connected to the SATA controller, parted says:

Model: ATA WDC WD30EZRX-00M (scsi)
Disk /dev/sdb: 3001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  3001GB  3001GB  xfs

How can I access the whole drive when it's in the enclosure? Do I need an updated kernel/driver?

kernel usb-drive usb-storage sata