From: Romu Hu <huruomu@gmail.com>
To: dm-devel@redhat.com
Subject: RHEL6.6 dm-cache and dm-era
Date: Mon, 15 Sep 2014 10:24:00 +0800 [thread overview]
Message-ID: <54164DC0.3020907@gmail.com> (raw)
Hi,
According to
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6-Beta/html-single/6.6_Release_Notes/index.html#bh-storage,
dm-cache and dm-era have been added into RHEL6.6 as technology preview,
but I couldn't find any other documentation about using dm-cache and
dm-era. I found the following utilities in
/usr/sbin/era_check
/usr/sbin/era_dump
/usr/sbin/era_invalidate
/usr/sbin/cache_check
/usr/sbin/cache_dump
/usr/sbin/cache_repair
/usr/sbin/cache_restore
I guess these utilities are related to dm-era and dm-cache,
respectively. There are only manpages for the cache utilities. After
reading the manpages I still have no clue how to use these
technologies. I want to do a sanity check of these technologies on my
SAN storage. Is it possible to try dm-cache and dm-era without a SSD?
e.g. using ram to imitate a fast block device..
Any idea?
Thanks
Romu
next reply other threads:[~2014-09-15 2:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-15 2:24 Romu Hu [this message]
2014-09-15 20:25 ` RHEL6.6 dm-cache and dm-era Brassow Jonathan
2014-09-18 8:27 ` Romu Hu
2014-09-22 12:35 ` Romu
2014-09-24 4:10 ` Brassow Jonathan
2014-09-25 6:10 ` Romu Hu
2014-09-25 10:19 ` Heinz Mauelshagen
2014-09-25 14:02 ` Romu
2014-09-25 14:57 ` Heinz Mauelshagen
2014-09-26 3:16 ` Romu Hu
2014-09-26 10:33 ` Heinz Mauelshagen
2014-09-29 2:31 ` Romu Hu
2014-09-29 10:12 ` Heinz Mauelshagen
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