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* [linux-lvm] Forcing a specific io scheduler
@ 2019-09-10 22:58 Gionatan Danti
  0 siblings, 0 replies; only message in thread
From: Gionatan Danti @ 2019-09-10 22:58 UTC (permalink / raw)
  To: linux-lvm

Hi all,
I have a (virtual) block devices which does not expose any io scheduler:
[root@localhost block]# cat /sys/block/zd0/queue/scheduler

I created an lvm volume on top of that block devices with:
[root@localhost ~]# pvcreate /dev/zd0
   Physical volume "/dev/zd0" successfully created.
[root@localhost ~]# vgcreate vg_test /dev/zd0
   Volume group "vg_test" successfully created
[root@localhost ~]# lvcreate vg_test --name lv_test -l +100%FREE
   Logical volume "lv_test" created.

With my surprise, I can not select any additional io scheduler:
[root@localhost block]# cat /sys/block/dm-2/queue/scheduler

I am missing something? Can a scheduler be forced on a lvm volume?

Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. -
email: -
GPG public key ID: FF5F32A8

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