On 06.07.2017 15:35, Robert Nichols wrote:
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.
That's it. Thanks for the information.
How would I remove the only the snapshot but not the base volume? Will
$ lvremove /dev/vg0/lv-vm-tviewer
leave the base volume untouched?