Hi!
There is some option in the kernel which must be included, or just upgrade to the latest version of the kernel? I use 3.13.0-24
Thanks
01.07.2014, 20:17, "Gregory Farnum" <g...@inktank.com>:
It looks like you're using a kernel RBD mount in the second case? I imagine your kernel doesn't support caching pools and you'd need to upgrade for it to work.-Greg
On Tuesday, July 1, 2014, Никитенко Виталий <v1...@yandex.ru> wrote:Good day!
I have server with Ubunu 14.04 and installed ceph firefly. Configured main_pool (2 osd) and ssd_pool (1 ssd osd). I want use ssd_pool as cache pool for main_pool
ceph osd tier add main_pool ssd_pool
ceph osd tier cache-mode ssd_pool writeback
ceph osd tier set-overlay main_pool ssd_pool
ceph osd pool set ssd_pool hit_set_type bloom
ceph osd pool set ssd_pool hit_set_count 1
ceph osd pool set ssd_pool hit_set_period 600
ceph osd pool set ssd_pool target_max_bytes 100000000000
If use tgt as:
tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 --bstype rbd --backing-store main_pool/store_main --bsopts "conf=/etc/ceph/ceph.conf"
and then connected from iscsi initiator to this Lun1, i see that ssd_pool is used as cache (i see through iostat -x 1) but slow speed
If use tgt as (or other sush as scst, iscsitarget):
tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 -b /dev/rbd1 (where rbd1=main_pool/store_main)
and then connected from iscsi initiator to this Lun1, i see that ssd_pool is not used, that write through to 2 osd
Help me, anyone work this iscsi and cache pool?
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