On 08/02/2016 07:26 PM, Ilya Dryomov wrote:
This seems to reflect the granularity (4194304), which matches the
>8192 pages (8192 x 512 = 4194304). However, there is no alignment
>value.
>
>Can discard_alignment be specified with RBD?
It's exported as a read-only sysfs attribute, just like
discard_granularity:
# cat /sys/block/rbd0/discard_alignment
4194304
Note that this is the standard way Linux export alignment for storage discard
for *any* kind of storage so worth using :)
Ric
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