* [linux-lvm] Forcing a specific io scheduler
@ 2019-09-10 22:58 Gionatan Danti
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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
none
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
none
I am missing something? Can a scheduler be forced on a lvm volume?
Thanks.
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Danti Gionatan
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