On 07/06/2017 04:43 AM, Volker wrote:
> Hi all,
>
> one of my lv has become completely unaccessible. Every read access
> results in a buffer io error:
>
> Buffer I/O error on dev dm-13, logical block 0, async page read
>
> this goes for every block in the lv. A ddrescue failed on every single
> block.
>
>
> $ lvdisplay
> --- Logical volume ---
> LV Path /dev/vg0/lv-vm-tviewer
> LV Name lv-vm-tviewer
> VG Name vg0
> LV UUID XdgHFs-RHVZ-9BAH-1ZSK-yiBX-qqf0-273CtT
> LV Write Access read/write
> LV Creation host, time host1, 2016-02-06 14:58:19 +0100
> LV snapshot status INACTIVE destination for lv-vm-tviewer_vorigin
> LV Status available
> # open 0
> LV Size 58.59 GiB
> Current LE 15000
> COW-table size 5.86 GiB
> COW-table LE 1500
> Snapshot chunk size 4.00 KiB
> Segments 1
> Allocation inherit
> Read ahead sectors auto
> - currently set to 8192
> Block device 253:13
That looks like a snapshot volume that became invalid because it was filled to capacity. Such a snapshot is lost forever. It si your responsibility to monitor snapshot usage to make sure it does not run out of space. The base volume, lv-vm-tviewer_vorigin, should still have its original content.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.