[linux-lvm] dm-cache and snapshots

[Syahrul Sazli Shaharir]

Hi,

In dm-cache, how do you do snapshots on a cached LV?

# lvs
  LV         VG          Attr       LSize   Pool          Origin
      Data%  Meta%  Move Log Cpy%Sync Convert
  LogVol00   vg_server17 -wi-ao---- 117.19g
  LogVol01   vg_server17 -wi-ao----  78.12g
  kvm163_img vg_server17 Cwi-aoC---   1.05t [DataLVcache]
[kvm163_img_corig] 10.14  12.29           0.00

# lvcreate -s -n /dev/vg_server17/kvm163_img_snap -L 10G
/dev/vg_server17/kvm163_img

  Snapshots of cache type volume vg_server17/kvm163_img is not supported.

Thanks.

-- 
--sazli