Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-07 Thread Andreas Dilger
On May 3, 2019, at 15:35, Hans Henrik Happe wrote: > > On 03/05/2019 22.41, Andreas Dilger wrote: >> On May 3, 2019, at 14:33, Patrick Farrell wrote: >>> >>> Thomas, >>> >>> As a general rule, Lustre only supports mixing versions on servers for >>> rolling upgrades. >>> >>> - Patrick >> >>

Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-07 Thread Thomas Roth
In the mean time I have tried the patch in LU-11507, which kept failing with > rpmbuild/BUILD/lustre-2.10.6/lustre/osd-zfs/osd_internal.h:774:2: error: > implicit declaration of function 'refcount_add' [-Werror=implicit-function-declaration] In the end I was successful after messing with the

Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-06 Thread Thomas Roth
Ah yes, of course, thanks for the advise. Come to think of it, we never did such an upgrade of the servers before (and this was just a test system). Could have worked, though, sometimes it's just one switch ;-) Regards, Thomas On 03/05/2019 22.35, Hans Henrik Happe wrote: > On 03/05/2019

Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-03 Thread Hans Henrik Happe
On 03/05/2019 22.41, Andreas Dilger wrote: > On May 3, 2019, at 14:33, Patrick Farrell wrote: >> >> Thomas, >> >> As a general rule, Lustre only supports mixing versions on servers for >> rolling upgrades. >> >> - Patrick > > And only then between maintenance versions of the same release (e.g.

Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-03 Thread Andreas Dilger
On May 3, 2019, at 14:33, Patrick Farrell wrote: > > Thomas, > > As a general rule, Lustre only supports mixing versions on servers for > rolling upgrades. > > - Patrick And only then between maintenance versions of the same release (e.g. 2.10.6 and 2.10.7). If you are upgrading, say,

Re: [lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-05-03 Thread Patrick Farrell
] 2.10 <-> 2.12 interoperability? Hi all, OS=CentOS 7.5 Lustre 2.10.6 One of the OSS (one OST only) was upgraded to zfs 0.7.13, and LU-11507 forced an upgrade of Lustre to 2.12 Mounts, reconnects, recovers, but then is unusable, and the MDS reports: Lustre: 13650:0:(mdt_handler.

[lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-04-24 Thread Thomas Roth
Hi all, OS=CentOS 7.5 Lustre 2.10.6 One of the OSS (one OST only) was upgraded to zfs 0.7.13, and LU-11507 forced an upgrade of Lustre to 2.12 Mounts, reconnects, recovers, but then is unusable, and the MDS reports: Lustre: 13650:0:(mdt_handler.c:5350:mdt_connect_internal()) test-MDT: