Hello.
I've created thin pool from lvm raid5 like this
All fine.
I moved 1 VM to it with clean windows install.
VM is very slow. Task manager shows disk usage 100%, react 60-7000ms, but read write about 30-80Kb/s
On host nmon shows always read aprox 40Mb/s and write aprox 15Mb/s.
What can it be?
I've created thin pool from lvm raid5 like this
Code:
pvcreate /dev/sd[a-c]
vgcreate myvg /dev/sda /dev/sdb /dev/sdc
lvcreate -n mylv -L 700G -i 2 --type raid5 myvg
lvcreate -n mymetalv -L 15G -i 2 --type raid5 myvg
lvconvert --thinpool myvg/mylv -poolmetadata myvg/mymetalvAll fine.
I moved 1 VM to it with clean windows install.
VM is very slow. Task manager shows disk usage 100%, react 60-7000ms, but read write about 30-80Kb/s
On host nmon shows always read aprox 40Mb/s and write aprox 15Mb/s.
Code:
DiskName Busy Read Write Xfers Size Peak% Peak=R+W InFlight
dm-14 91% 33083.0 11994.9KB/s 11262.2 4.0KB 373% 210130.6KB/s 824
dm-16 32% 38975.1 12646.5KB/s 12889.9 4.0KB 165% 210107.6KB/s 04
dm-18 39% 32837.0 12964.3KB/s 11389.0 4.0KB 163% 210075.6KB/s 964
sda 79% 36868.2 11445.6KB/s 253.4 190.7KB 374% 210140.5KB/s 8
sdb 41% 30489.3 10502.0KB/s 216.4 189.4KB 169% 210052.6KB/s 0
sdc 49% 46243.7 13690.3KB/s 310.9 192.8KB 164% 210084.6KB/s 1What can it be?