10:27 a.m.
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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-tuto...
(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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<div class="moz-cite-prefix">Dňa 09.12.2014 o 03:57 yao xu
napísal(a):<br>
</div>
<blockquote
cite="mid:CAFEhV74MugY5YCTTaBfsMbU_0B6gWvU5zDeh9bGRnukvJscAFw@mail.gmail.com"
type="cite">
<div dir="ltr">do you use iscsi ? </div>
<br>
</blockquote>
<br>
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:
<br>
<br>
<a class="moz-txt-link-freetext"
href="http://blog.kylemanna.com/linux/2013/06/30/ssd-caching-using-d...
(or this, but you need a subscrition:
<a class="moz-txt-link-freetext"
href="https://access.redhat.com/solutions/912953">https://ac...
)<br>
<br>
tgtd.conf:<br>
<br>
<tt><target
iqn.2014-05.sk.axonpro.sk:BigCachedPool></tt><tt><br>
</tt><tt> scsi_id STORAGE_BigCachedPool</tt><tt><br>
</tt><tt> vendor_id AXONPRO</tt><tt><br>
</tt><tt> product_id scsi-target-utils</tt><tt><br>
</tt><tt> scsi_sn
42fbb7c1-99d4-4247-a55b-222e5abe13aa</tt><tt><br>
</tt><tt> backing-store
/dev/rhel/BigCachedPool</tt><tt><br>
</tt><tt> incominguser ovirt xxxx</tt><tt><br>
</tt><tt></target></tt><tt><br>
</tt><br>
lvs:<br>
<br>
<tt> LV VG Attr LSize Pool
Origin Data% Move Log Cpy%Sync
Convert</tt><tt><br>
</tt><tt> BigCachedPool rhel Cwi-aoC--- 21,00t lv_cache
[BigCachedPool_corig]</tt><tt><br>
</tt><tt> lv_cache rhel Cwi-a-C--- 100,00g</tt><br>
<br>
<div class="moz-signature">-- <br>
<div id="oernii_footer" style="color: gray;">
<span style="font-family: Lucida Console, Luxi Mono, Courier,
monospace; font-size: 90%;">
Ernest Beinrohr, AXON PRO<br>
<a style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/ing.php">Ing</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCE</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCVA</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/lpic.php">LPIC</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/vca.php">VCA</a>, <br>
+421-2-62410360 +421-903-482603
<br>
</span> </div>
<img
src="http://nojsstats.appspot.com/UA-44497096-1/email.beinrohr.sk"
moz-do-not-send="true" height="1" width="1"
border="0">
</div>
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