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?