[Users] discard support for SSD in OpenVZ kernel

[spameden]

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!


2013/8/27 spameden <spameden at gmail.com>

> 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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