On Tue, May 30, 2023 at 3:02 PM Mike Snitzer <snitzer@xxxxxxxxxx> wrote:
Also Joe, for you proposed dm-thinp design where you distinquish
between "provision" and "reserve": Would it make sense for REQ_META
(e.g. all XFS metadata) with REQ_PROVISION to be treated as an
LBA-specific hard request? Whereas REQ_PROVISION on its own provides
more freedom to just reserve the length of blocks? (e.g. for XFS
delalloc where LBA range is unknown, but dm-thinp can be asked to
reserve space to accomodate it).
My proposal only involves 'reserve'. Provisioning will be done as part of the usual io path.
- Joe
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