Hi Peter! On Wed, Oct 30, 2013 at 09:11:47PM +0000, Jones, Peter A wrote: > We are pleased to announce that the Lustre 2.5.0 Release has been >declared GA and is available for >download<http://downloads.whamcloud.com/public/lustre/latest-feature-rele >ase/> . You can also grab the source from >git<http://git.whamcloud.com/?p=fs/lustre-release.git;a=commit;h=be39b2aa >4bf1469db0c936d1415301dca3a1effc> > > The major release includes a number of new features including: > > Hierarchal Storage Management (HSM) >(LU-<https://jira.hpdd.intel.com/browse/LU-3608>3608<https://jira.hpdd.in >tel.com/browse/LU-3608>) ? allows data to be transferred between >different storage types > Extended Attribute Cache (Xattr Cache) >(LU-2869<https://jira.hpdd.intel.com/browse/LU-2869>) - improved >performance when reading extended attributes > > Fuller details can be found in the change >log<https://wiki.hpdd.intel.com/display/PUB/Changelog+2.5>, the scope >statement<https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5+Scope+Statem >ent> ><https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5+Scope+Statement> and >the test matrix<https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5> ><https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5> Congrats to this new milestone! Could you please elaborate on interoperability of 2.5 servers with earlier clients? According to the release planning you presented last year, 1.8 client interop was meant to become deprecated with 2.5. Has this intent been postponed with 2.5.x now targeted as a maintenance instead of a feature release? For 2.4, interoperability was mentioned in the release notes, but I haven't been able to find a definitive statement for 2.5. Is it possible to upgrade from 1.8 to 2.5 in a single step? Regards, Daniel. _______________________________________________ HPDD-discuss mailing list HPDD-discuss(a)lists.01.org https://lists.01.org/mailman/listinfo/hpdd-discuss

Hi Peter, I'm also very interested in knowing if 2.5.x servers work with 1.8.9 clients. Given the fact that 2.X clients are significantly slower with respect to single stream striped performance, it would be a real blocker for us to move to 2.5 :-/ Regards, Erich Am 04.11.2013 22:32, schrieb Jones, Peter A: > Hi Daniel > > Thanks! :-) > > I think that this is a good question and one that others will probably > have too. > > The discussions around making 2.5.x a maintenance release stream arose > fairly late in the release cycle so, after discussion on the CDWG, the > only adjustment we made from the previously announced plans was to test > upgrading directly from 2.1.x releases to 2.5.0. > > Regards > > Peter > > On 11/4/13, 4:54 AM, "Daniel Kobras" <kobras(a)linux.de&gt; wrote: > >> Hi Peter! >> >> On Wed, Oct 30, 2013 at 09:11:47PM +0000, Jones, Peter A wrote: >>> We are pleased to announce that the Lustre 2.5.0 Release has been >>> declared GA and is available for >>> >>>download<http://downloads.whamcloud.com/public/lustre/latest-feature-re >>>le >>> ase/> . You can also grab the source from >>> >>>git<http://git.whamcloud.com/?p=fs/lustre-release.git;a=commit;h=be39b2 >>>aa >>> 4bf1469db0c936d1415301dca3a1effc> >>> >>> The major release includes a number of new features including: >>> >>> Hierarchal Storage Management (HSM) >>> >>>(LU-<https://jira.hpdd.intel.com/browse/LU-3608>3608<https://jira.hpdd. >>>in >>> tel.com/browse/LU-3608>) ? allows data to be transferred between >>> different storage types >>> Extended Attribute Cache (Xattr Cache) >>> (LU-2869<https://jira.hpdd.intel.com/browse/LU-2869>;) - improved >>> performance when reading extended attributes >>> >>> Fuller details can be found in the change >>> log<https://wiki.hpdd.intel.com/display/PUB/Changelog+2.5>;, the scope >>> >>>statement<https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5+Scope+Stat >>>em >>> ent> >>> <https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5+Scope+Statement> >>>and >>> the test matrix<https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5> >>> <https://wiki.hpdd.intel.com/display/PUB/Lustre+2.5> >> >> Congrats to this new milestone! >> >> Could you please elaborate on interoperability of 2.5 servers with >>earlier >> clients? According to the release planning you presented last year, 1.8 >> client interop was meant to become deprecated with 2.5. Has this intent >> been >> postponed with 2.5.x now targeted as a maintenance instead of a feature >> release? >> >> For 2.4, interoperability was mentioned in the release notes, but I >> haven't >> been able to find a definitive statement for 2.5. Is it possible to >> upgrade >>from 1.8 to 2.5 in a single step? >> >> Regards, >> >> Daniel. >> _______________________________________________ >> HPDD-discuss mailing list >> HPDD-discuss(a)lists.01.org >> https://lists.01.org/mailman/listinfo/hpdd-discuss > > _______________________________________________ > HPDD-discuss mailing list > HPDD-discuss(a)lists.01.org > https://lists.01.org/mailman/listinfo/hpdd-discuss >

Hi Peter, > Effort is being put into addressing that particular use case rather than > continuing to enable the "workaround". :-) that's good :-) And your statement is a confirmation that 1.8.9 clients won't work with 2.5, as mentioned (also by Daniel)? At LAD'13 you said: "Interop with 2.4.x only; 2.1.x upgrade should be possible" Does that mean that only 2.4.x clients are supposed to work with 2.5 servers? Thanks in advance for the clarification ;-) Regards, Erich