Dne 19. 01. 20 v 13:59 Gionatan Danti napsal(a):
Hi list,
just for confirmation: is the time needed to take a snapshot constant, or does
it depend on how many chunks are mapped in/by the specific thin pool and
volume? In other workds, is snapshot create time O(1) or O(n)?
Hi
Depends on what you are asking - in lvm2 - unfortunately some parts of the
code are sometimes even O(n^2) - so the more LVs are in VG - the 'heavier' the
operation gets.
So having thousands of LVs in a single VG will become probably your bottleneck.
The bTree mapping in kernel will probably be less problematic here.
Regards
Zdenek
_______________________________________________
linux-lvm mailing list
linux-lvm@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
