On Wed, Mar 30, 2016 at 8:24 AM, NeilBrown <neilb@xxxxxxxx> wrote: > On Fri, Mar 25 2016, Ilya Dryomov wrote: > >> On Fri, Mar 25, 2016 at 5:02 AM, NeilBrown <neilb@xxxxxxxx> wrote: >>> On Sun, Mar 06 2016, Sage Weil wrote: >>> >>>> Hi Linus, >>>> >>>> Please pull the following Ceph patch from >>>> >>>> git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git for-linus >>>> >>>> This is a final commit we missed to align the protocol compatibility with >>>> the feature bits. It decodes a few extra fields in two different messages >>>> and reports EIO when they are used (not yet supported). >>>> >>>> Thanks! >>>> sage >>>> >>>> >>>> ---------------------------------------------------------------- >>>> Yan, Zheng (1): >>>> ceph: initial CEPH_FEATURE_FS_FILE_LAYOUT_V2 support >>> >>> Just wondering, but was CEPH_FEATURE_FS_FILE_LAYOUT_V2 supposed to have >>> exactly the same value as CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING (and >>> CEPH_FEATURE_CRUSH_TUNABLES5)?? >> >> Yes, that was the point of getting it merged into -rc7. > > I did wonder if that might be the case. > >> >>> Because when I backported this patch (and many others) to some ancient >>> enterprise kernel, it caused mounts to fail. If it really is meant to >>> be the same value, then I must have some other backported issue to find >>> and fix. >> >> It has to be backported in concert with changes that add support for >> the other two bits. > > I have everything from fs/ceph and net/ceph as of 4.5, with adjustments > for different core code. > >> How did mount fail? > > "can't read superblock". > dmesg contains > > [ 50.822479] libceph: client144098 fsid 2b73bc29-3e78-490a-8fc6-21da1bf901ba > [ 50.823746] libceph: mon0 192.168.1.122:6789 session established > [ 51.635312] ceph: problem parsing mds trace -5 > [ 51.635317] ceph: mds parse_reply err -5 > [ 51.635318] ceph: mdsc_handle_reply got corrupt reply mds0(tid:1) > > then a hex dump of header:, front: footer: > > Maybe my MDS is causing the problem? It is based on v10.0.5 which > contains > > #define CEPH_FEATURE_CRUSH_TUNABLES5 (1ULL<<58) /* chooseleaf stable mode */ > // duplicated since it was introduced at the same time as CEPH_FEATURE_CRUSH_TUN > #define CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING (1ULL<<58) /* New, v7 encoding */ > > in ceph_features.h i.e. two features using bit 58, but not > FS_FILE_LAYOUT_V2 > > Should I expect Linux 4.5 to work with ceph 10.0.5 ?? Sorry, cephfs in linux 4.5 does not work with 10.0.5. Please upgrade to ceph 10.1.0 Regards Yan, Zheng > > Thanks, > NeilBrown -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
