[linux-lvm] Fwd: Re: Correct way to remove LVM Snapshot

[Heinz Mauelshagen]

On 9/26/18 6:50 AM, Jaco van Niekerk wrote:
>
> Hi
>
> I will like to confirm the correct way to remove an LVM snapshot?
>
> Create my Logical Volume and snapshot:
> lvcreate --addtag pacemaker --name lv_iscsi_lun1 --size 100G vg_iscsi 
> --config 'activation { volume_list = [ "@pacemaker" ]}'
> lvcreate --addtag pacemaker --name lv_iscsi_lun1_snap --snapshot 
> --size 10G /dev/vg_iscsi/lv_iscsi_lun1 --config 'activation { 
> volume_list = [ \"@pacemaker\" ]}'
>
> Do I have to Merge the Snapshot first before I can remove it?
> lvremove /dev/vg_iscsi/lv_iscsi_lun1_snap


Depends on your use case:

- if you need the data as of your snapshot and wnat to keep it in the 
origin, you have to merge

- if you used the snapshot temorarily (e.g. for backup, fsck, ...), just 
lvremove it.

>
> More Info:
> lv_iscsi_lun1 is a ISCSI target for a KVM virtual server.
>
> Trouble experienced:
> I lost my hole Volume Group after removing the Logical Volume Snapshot.

Can you provide any logs and "lvremove -vvvv ..." output (lvmdump 
preferred)?

Heinz

> Regards
>
> -- 
>
> Jaco van Niekerk
>
>
>
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