Our servers have a large number of resources on a 6-drive volume group. When
Linstor provisioned the resources, it apparently kept them all on individual
devices. Here's a snippet of the approximately 200 resources on the servers.
None of them show more than 1 device in the "Devices" column.
[root@ha51b ~]# lvs -o+lv_layout,stripes,devices
LV VG Attr LSize Pool Origin Data% Meta% Move Log
Cpy%Sync Convert Layout #Str Devices
site002_00000 vg0 -wi-ao---- 104.02g
linear 1 /dev/nvme3n1(371535)
site003_00000 vg0 -wi-ao---- <63.02g
linear 1 /dev/nvme0n1(498558)
site017_00000 vg0 -wi-ao---- <149.04g
linear 1 /dev/nvme3n1(724396)
site019_00000 vg0 -wi-ao---- <19.01g
linear 1 /dev/nvme4n1(0)
site021_00000 vg0 -wi-ao---- <23.01g
linear 1 /dev/nvme2n1(698275)
site030_00000 vg0 -wi-ao---- 39.01g
linear 1 /dev/nvme2n1(704165)
site034_00000 vg0 -wi-ao---- <23.01g
linear 1 /dev/nvme3n1(713896)
site035_00000 vg0 -wi-ao---- 39.01g
linear 1 /dev/nvme0n1(254527)
site036_00000 vg0 -wi-ao---- <88.02g
linear 1 /dev/nvme2n1(714152)
site037_00000 vg0 -wi-ao---- <28.01g
linear 1 /dev/nvme0n1(530822)
site039_00000 vg0 -wi-ao---- <59.02g
linear 1 /dev/nvme1n1(180777)
site041_00000 vg0 -wi-ao---- <21.01g
linear 1 /dev/nvme3n1(181290)
site043_00000 vg0 -wi-ao---- 50.01g
linear 1 /dev/nvme3n1(398165)
site045_00000 vg0 -wi-ao---- 52.01g
linear 1 /dev/nvme1n1(203567)
site047_00000 vg0 -wi-ao---- 54.01g
linear 1 /dev/nvme0n1(264514)
site049_00000 vg0 -wi-ao---- <81.02g
linear 1 /dev/nvme3n1(410968)
site058_00000 vg0 -wi-ao---- <30.01g
linear 1 /dev/nvme0n1(564622)
site062_00000 vg0 -wi-ao---- 17.00g
linear 1 /dev/nvme3n1(197679)
site065_00000 vg0 -wi-ao---- <23.01g
linear 1 /dev/nvme1n1(387935)
site068_00000 vg0 -wi-ao---- <32.01g
linear 1 /dev/nvme0n1(616090)
</snip>
With this layout (all LVs are linear), when a drive fails, I assume only the
resources on that physical drive would go diskless, and all the other resources
would continue operating normally, is that correct?
In such an event, what would be the recovery procedure? Swap the failed drive,
use vgcfrestore to restore the LVM data to the new PV, then do a DRBD resync?
-Eric
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