On Mon, Jan 1, 2018 at 12:38 AM, Patrick Farrell <p...@cray.com> wrote:
> > > 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. > That just means that during the migration phase the 2.10 filesystem should not be production yet or alternatively the 1.8 system is out of prodution and read-only.... which would anyhow be the goal of a migration or am I seeing this totally wrong? Good luck and thanks everyone on lustre-users for being an excelletn mailing list :) Eli > ------------------------------ > *From:* lustre-discuss <lustre-discuss-boun...@lists.lustre.org> on > behalf of Daniel Kobras <kob...@linux.de> > *Sent:* Sunday, December 31, 2017 12:26:49 PM > *To:* David Cohen > *Cc:* lustre-discuss@lists.lustre.org > *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 < > cda...@physics.technion.ac.il>: > > > > 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 <p...@cray.com> 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 <lustre-discuss-boun...@lists.lustre.org> on > behalf of David Cohen <cda...@physics.technion.ac.il> > > Sent: Saturday, December 30, 2017 11:45:15 AM > > To: lustre-discuss@lists.lustre.org > > 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 > > lustre-discuss@lists.lustre.org > > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > >
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