On 08/27/2013 08:20 AM, spameden wrote:
ArchLinux wiki says:
*Warning: *Users need to be certain that kernel version 2.6.33 or
above is being used AND that their SSD supports TRIM before attempting
to mount a partition with the |discard| flag. Data loss can occur
otherwise!
So I guess it's not in the OpenVZ kernel?
I'd like to use TRIM because it increases performance to SSD drastically!
You'd better check it with Red Hat, looking into their RHEL6 documentation.
My quick googling for "rhel6 kernel ssd discard" shows that rhel6 kernel
do support trim, they have backported it (as well as tons of other stuff,
so this is hardly 2.6.32 kernel anymore).
2013/8/27 spameden <[email protected] <mailto:[email protected]>>
is it implemented?
I've tried on 3.2.0-4 debian wheezy default kernel it's working
just fine:
# dmsetup table
vg0-home: 0 443277312 linear 9:1 25166208
home: 0 443273216 crypt aes-cbc-plain
0000000000000000000000000000000000000000000000000000000000000000 0
253:2 4096 1 allow_discards
But not on OpenVZ's 2.6.32.xxxx:
# dmsetup table
vg0-home: 0 443277312 linear 9:1 25166208
home: 0 443273216 crypt aes-cbc-plain
0000000000000000000000000000000000000000000000000000000000000000 0
253:2 4096
vg0-swap: 0 4194304 linear 9:1 20971904
vg0-root: 0 20971520 linear 9:1 384
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