Re: [Lustre-discuss] mixing server versions

2010-09-15 Thread Bernd Schubert
On Wednesday, September 15, 2010, Andreas Dilger wrote: > On 2010-09-15, at 13:32, Brock Palen wrote: > > Thanks that is great to know. Is there much risk to try with 1.8 and > > then back off to 1.6 if there are issues? Risk of data loss? > > We do not test/support formatting at a higher Lustre

Re: [Lustre-discuss] mixing server versions

2010-09-15 Thread Andreas Dilger
On 2010-09-15, at 13:32, Brock Palen wrote: > Thanks that is great to know. Is there much risk to try with 1.8 and then > back off to 1.6 if there are issues? Risk of data loss? We do not test/support formatting at a higher Lustre version, and then downgrading below the original version used f

Re: [Lustre-discuss] mixing server versions

2010-09-15 Thread Andreas Dilger
On 2010-09-15, at 12:36, Brock Palen wrote: > We have a filesystem that we can't take down for a while to upgrade the oss's > they are running 1.6.x we do have a need to quickly add some storage to it, > and thus the new server would have 1.8.x > > Is there any problems with this? I know 1

[Lustre-discuss] mixing server versions

2010-09-15 Thread Brock Palen
We have a filesystem that we can't take down for a while to upgrade the oss's they are running 1.6.x we do have a need to quickly add some storage to it, and thus the new server would have 1.8.x Is there any problems with this? I know 1.6.x isn't supported anymore and we would like to mov

Re: [Lustre-discuss] 2.0.0.1 server with 1.8.x clients

2010-09-15 Thread Fan Yong
Honestly, we do not suggest the mixed mode as you mentioned unless you have to for some special reasons. There are some known interoperability issues between lustre-1.8 and lustre-2.0. These are part of them in the list: https://bugzilla.lustre.org/buglist.cgi?quicksearch=1.8%3C-%3E2.0+interop