[Devel] [RFC PATCH vz9 v6 56/62] dm-ploop: support REQ_FUA for data pios
Alexander Atanasov
alexander.atanasov at virtuozzo.com
Fri Dec 13 16:12:33 MSK 2024
On 13.12.24 14:58, Andrey Zhadchenko wrote:
> No, REQ_FUA does not oblige us to make sync. REQ_FUA is translated into
> IOCB_DSYNC. It is IOCB layer job to datasync this exact request.
> Also REQ_FUA usually is coupled with REQ_PREFLUSH and we already handle
> that.
>
We do this only for metadata in previous patches - pure data pios do not
handle it. And you are right about REQ_PREFLUSH but i think the vfs
layer will handle it along the sync - which is translated to PREFLUSH+FUA
--
Regards,
Alexander Atanasov
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