Re: SSD drives

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On 05/28/2012 04:55 PM, Roberto Ragusa wrote:
> On 05/26/2012 03:53 PM, Juan Orti Alcaine wrote:
> 
>> I suspect it isn't working because "cryptsetup status
>> /dev/mapper/luks-uuid" does not say anything about discards. I think
>> it must say "flags: discards"
>>
>> Any suggestion?

lsblk -D
it should print non-zero discard size for the whole storage stack.

dmsetup table <name of luks device>

and you should see "allow-discards" as last option in mapping table.

If not, discards are rejected.

(Of course you can complicate it and use blktrace + fstrim)

Milan
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