Hi all,
would it be useful when building/re-building rbd object map as well as
snap diff map to have osd side processing multiple objects instead of
having to test 1 object at a time which is very slow.
One approach to speed things would be to extend the pgnls operation
filter to accept an object prefix + ability to access a snap context,
currently the filter interface only supports xattr.
Another approach would be to add a new pg op that does hit testing, the
client would pass an object prefix + a vector of object_no and optional
to/from snap ids. The client would pre-assign the objects to pgs and
would send say 1k objects per op at a time. Sorting the objects in
reverse-hash may further speed the rocksdb lookups.
Would either of these approaches be useful ? any gotchas ?
/Maged
