On Thu, Aug 18, 2022, 08:43 Rich Shepard <[email protected]> wrote:

> A few months ago you helped me re-do the MediaSonic Probox external drive
> enclosure. I replaced all four hard drives with WD RED 2T drives.
>
> Bay 1 is mounted as /media/data2/, bay 2 is mounted as /media/data3, and
> bays 3 and 4 are a RAID1 (/dev/md0) mounted as /media/backup.
>
> Yesterday my dirvish backup reported rsync errors with /media/data2/ and
> /media/data3/. I sent one error report to the dirvish mail list (since
> they're both the same rsync input/output errors. No response yet.
>
> I've uploaded one dirvish error report (as temp.tmp) to
> <tinyurl.com/4fb96cku> because at 201 lines it's too large to include in
> this message. It will remain there for 5 days.
>
> The two drives are entered in /etc/fstab as:
> UUID=b50f1824-45ee-4623-adc7-ea737a88902b  /media/data2  ext4
> auto,users,rw  1 2
> UUID=8b47d782-8e1c-46bb-b314-0c53d90d6fac  /media/data3  ext4
> auto,users,rw  1 2
>
> and fdisk -l reports:
> The primary GPT table is corrupt, but the backup appears OK, so that will
> be used.
> Disk /dev/sdi: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: gpt
> Disk identifier: 516A555D-993E-4F90-97A5-D698B61E7170
>
> The primary GPT table is corrupt, but the backup appears OK, so that will
> be used.
> Disk /dev/sdj: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: gpt
> Disk identifier: E999846E-C55C-4DF6-8656-F7B68F542F6C
>
> lsblk doesn't include them.
>
> This all worked fine until Wednesday night.
>
> I think the fstab UUIDs are for the partitions /dev/sdi1 and /dev/sdj1
> rather than for /dev/sdi and /dev/sdj.
>
> Could the WD RED drives have failed so quickly?
>
> Should I run fsck? If so, do I specify /dev/sdi and /dev/sdj or the *1
> partitions?
>
> I need the data on these disks. Fortunately, I've added nothing to either
> on
> Tuesday so the backups through Tuesday are all okay.
>
> Rich
> .


I have no time to look through the logs - others will hopefully do.

That said, I would not blame the disks as top suspect. Raid over usb
attached disk array will fail sooner or later. That has been discussed (and
ignored, I understand the inconvenience) a lot here in respect to these
MediaSonic enclosures.

Not wanting to repeat the same over and over .... JBOD or Btrfs or zfs are
better choices - over usb disk array IMHO.

Please weight the above as general advice - logs may have real root cause -
which will likely support this.

-Tomas

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