Re: [GIT PULL] Ceph fixes for -rc7
From: Yan, Zheng
Date: Tue Mar 29 2016 - 22:30:37 EST
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).
>>>> 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
>> 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
> #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
> 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