According to XFS docs, setting crc=1 will only enable CRC validation of XFS metadata (ie. mtime, xattrs, etc.). Still, nothing guarantees integrity of the actual data.
2014-11-25 11:05 GMT+01:00 Denis Kaganovich <maha...@bspu.unibel.by>: > How about XFS journal crc (mkfs stage crc=1)? Somebody trying? > > Tomasz Kuzemko писал 2014-11-25 13:01: > >> Hello, >> as far as I can tell, Ceph does not make any guarantee that reads from >> an object return what was actually written to it. In other words, it >> does not check data integrity (except doing deep-scrub once every few >> days). Considering the fact that BTRFS is not production-ready, not >> many people use Ceph on top of ZFS, then the only option to have some >> sort of guarantee of integrity is to enable "filestore sloppy crc" >> option. Unfortunately the docs aren't too clear about this matter and >> "filestore sloppy crc" is not even documented, which is weird >> considering it's merged since Emperor. >> >> Getting back to my actual question - what is the state of "filestore >> sloppy crc"? Does someone actually use it in production? Are there any >> considerations one should make before enabling it? Is it safe to >> enable it on an existing cluster? >> >> -- >> >> Tomasz Kuzemko >> tom...@kuzemko.net >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > -- Tomasz Kuzemko tom...@kuzemko.net
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
