Re: [GIT PULL] Ceph fixes for -rc7

[Yan, Zheng]

On Fri, Mar 25, 2016 at 12:02 PM, 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)??
> 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.

Yes, it's mean to be some value. For the mount failure, please make
sure the MDS is compiled from the newest ceph code.

Regards
Yan, Zheng

>
> Thanks,
> NeilBrown
>
>
>>
>>  fs/ceph/addr.c                     |  4 ++++
>>  fs/ceph/caps.c                     | 27 ++++++++++++++++++++++++---
>>  fs/ceph/inode.c                    |  2 ++
>>  fs/ceph/mds_client.c               | 16 ++++++++++++++++
>>  fs/ceph/mds_client.h               |  1 +
>>  fs/ceph/super.h                    |  1 +
>>  include/linux/ceph/ceph_features.h |  1 +
>>  7 files changed, 49 insertions(+), 3 deletions(-)