[virt-tools-list] Refreshing Storage Pool

Ritchie P. Fraser rpf at marinesoftware.co.uk
Mon Mar 10 15:33:34 UTC 2014


I am having issues getting KVM / QEMU / libvirt refreshing one of my storage pools.

I have SAN storage volumes connected through multipath iscsi on the host in /dev/mapper - All GOOD so far

                $ ls -l /dev/mapper

                total 0
                crw------- 1 root root 10, 236 Feb 20 17:31 control
                lrwxrwxrwx 1 root root       8 Mar 10 13:24 mpath-a -> ../dm-5
                lrwxrwxrwx 1 root root       8 Mar 10 13:24 mpath-b -> ../dm-4
                lrwxrwxrwx 1 root root       8 Mar 10 13:24 mpath-c -> ../dm-2
                lrwxrwxrwx 1 root root       8 Mar 10 13:24 mpath-d -> ../dm-11

I list the storage pools on the KVM / QEMU / visrh host ...

                $ virsh pool-list

                Name                 State      Autostart
                archive              active     yes
                multipath_iscsi      active     yes

... and then list the volumes in the multipath_iscsi storage pool ...

                $ virsh vol-list multipath_iscsi

                Name                 Path
                dm-5                 /dev/mapper/mpath-a
                dm-4                 /dev/mapper/mpath-b
                dm-2                 /dev/mapper/mpath-c

I see thet my NEW SAN volume does not show up in the listed volumes, so I refresh the storage pool and re-list ...

                $ virsh pool-refresh multipath_iscsi
                $ virsh vol-list multipath_iscsi

                Name                 Path
                dm-5                 /dev/mapper/mpath-a
                dm-4                 /dev/mapper/mpath-b
                dm-2                 /dev/mapper/mpath-c

Uh Oh!, No new volume listed in the storage pool

Is there anything else I should be doing?

The host is seeing the additional multipath iscsi volume so, there is nothing wrong with the volume, iscsi, multipath setup... I just can 't get virsh to "add it to the storage pool"

Kind Regards,
Ritchie Fraser
Systems Administrator

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