Keeping in mind that the choice of NFS means that you don’t have the POSIX guarantees provided by Lustre, so simultaneous access to the same files is dicey unless it’s only reading. ________________________________ From: lustre-discuss <[email protected]> on behalf of Daniel Kobras <[email protected]> Sent: Sunday, December 31, 2017 12:26:49 PM To: David Cohen Cc: [email protected] Subject: Re: [lustre-discuss] Lustre Client in a container
Hi David! Do you require both systems to be available as native Lustre filesystems on all clients? Otherwise, reexporting one of the systems via NFS during the migration phase will keep all data available but decouple the version interdependence between servers and clients. In this situation, it’s probably the least experimental option. Kind regards, Daniel > Am 31.12.2017 um 09:50 schrieb David Cohen <[email protected]>: > > Patrick, > Thanks for you response. > I looking for a way to migrate from 1.8.9 system to 2.10.2, stable enough to > run the several weeks or more that it might take. > > > David > > On Sun, Dec 31, 2017 at 12:12 AM, Patrick Farrell <[email protected]> wrote: > David, > > I have no direct experience trying this, but I would imagine not - Lustre is > a kernel module (actually a set of kernel modules), so unless the container > tech you're using allows loading multiple different versions of *kernel > modules*, this is likely impossible. My limited understanding of container > tech on Linux suggests that this would be impossible, containers allow > userspace separation but there is only one kernel/set of modules/drivers. > > I don't know of any way to run multiple client versions on the same node. > > The other question is *why* do you want to run multiple client versions on > one node...? Clients are usually interoperable across a pretty generous set > of server versions. > > - Patrick > > > From: lustre-discuss <[email protected]> on behalf of > David Cohen <[email protected]> > Sent: Saturday, December 30, 2017 11:45:15 AM > To: [email protected] > Subject: [lustre-discuss] Lustre Client in a container > > Hi, > Is it possible to run Lustre client in a container? > The goal is to run two different client version on the same node, can it be > done? > > David > > > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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