[linux-lvm] how to copy a snapshot, or restore snapshot without deleting it
zkabelac at redhat.com
Wed Jan 16 13:55:59 UTC 2019
Dne 16. 01. 19 v 0:03 Davis, Matthew napsal(a):
> Hi Zdenek,
> Here's what I see with `sudo lvs -a`. (My snapshots are actually called `fresh` and `fresh2` not `mySnap`)
> LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
> fresh centos Vwi---tz-k <1.46t pool00
> fresh2 centos Vwi---tz-k <1.46t pool00 fresh
So these both LVs are snapshots (since they were created with s(k)ipped
activation - however 'fresh' LV cannot be merged anymore as it's origin is
But 'lvconvert --merge centos/fresh2' should work - yet you need to
manually drop 'k' flag (via lvchange).
So to have 'working' merge - you have to see something in the 'Origin' field.
If the Origin field is already 'empty' you can't be merging such LV even when
it was originally created as 'snapshot'.
Also note that thin snapshot merging is nothing else then a bit more 'smart'
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