[PVE-User] Discard transmission between VM / LVM / mdadm layers ?
frederic at juliana-multimedia.com
Sun Dec 15 12:51:01 CET 2019
Le 13/12/2019 à 13:15, Alexandre DERUMIER a écrit :
> When a VM sends a discard/trim command, is it sent to the SSD, LVM does
> not block the command?
> Hi, yes it's working with lvm (lvm thin only)
I opened a bug report to the debian-installer package to see if it could
add lvm-thin support.
Ben Hutchings answered this about the non transmission of discard by
LVM: "This seems to be incorrect. LVM normally uses dm-table, which
supports discard if the underlying device(s) do".
I do not know what to think. Mdadm, the lower layer, supports discard.
| FRÉDÉRIC MASSOT |
| http://www.juliana-multimedia.com |
| mailto:frederic at juliana-multimedia.com |
| +33.(0)18.104.22.168.94 +33.(0)22.214.171.124.69 |
More information about the pve-user