[lvm-devel] Batch/queue LVM operations

[Zdenek Kabelac]

Dne 28.7.2017 v 21:22 Eric Wheeler napsal(a):
> Hello,
> 
> Is there an option to batch LVM operations?
> 
> For example, I would like to delete 100 thin snapshots without updating
> the vgmeta 100 times.

You could possibly use --select feature to handle all removals with
just one lvremove command.

> 
> Same thing with lvcreate, lvresize, etc.
> 
> If would be neat if `lvm`'s readline prompt could take multiple commands
> via stdin and commit them once, even at the expense of longer lock times.
> 
> Is there already support for this in some form?

At this moment we do not have optimization to do more then 1 removal at a time 
- however if  LVs  are 'inactive' before lvremove  it should be relatively quick.

However 'lvm2' was not designed for some ultra-fast manipulation - i.e. you
are typically not creating/removing LV so quickly.

Removal of individual thin LVs also takes its time since kernel metadata needs 
to be updated.  So I'd not expect some miliseconds timing.


Regards

Zdenek