Dňa 09.12.2014 o 03:57 yao xu napísal(a):
do you use iscsi ?
Yes, the storage present itselft as iscsi to ovirt. The tgtd iscsi
target which runs on rhel7 does NOT know about the cache, it simply
shares an LVM block device. I created the cache using this tutorial:
http://blog.kylemanna.com/linux/2013/06/30/ssd-caching-using-dmcache-tutorial/
(or this, but you need a subscrition:
https://access.redhat.com/solutions/912953 )
tgtd.conf:
<target iqn.2014-05.sk.axonpro.sk:BigCachedPool>
scsi_id STORAGE_BigCachedPool
vendor_id AXONPRO
product_id scsi-target-utils
scsi_sn 42fbb7c1-99d4-4247-a55b-222e5abe13aa
backing-store /dev/rhel/BigCachedPool
incominguser ovirt xxxx
</target>
lvs:
LV VG Attr LSize Pool Origin
Data% Move Log Cpy%Sync Convert
BigCachedPool rhel Cwi-aoC--- 21,00t lv_cache [BigCachedPool_corig]
lv_cache rhel Cwi-a-C--- 100,00g
--
Ernest Beinrohr, AXON PRO
Ing <http://www.beinrohr.sk/ing.php>, RHCE
<http://www.beinrohr.sk/rhce.php>, RHCVA
<http://www.beinrohr.sk/rhce.php>, LPIC
<http://www.beinrohr.sk/lpic.php>, VCA <http://www.beinrohr.sk/vca.php>,
+421-2-62410360 +421-903-482603
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