Yeah we've found out firsthand that its problematic as we have been
seeing issues :). Hence the urge to upgrade.
We've begun exploring this but we wanted to reach out to other people
who may have gone through the same thing to get their thoughts. We also
need to figure out how significant an outage this will be. As if it
takes a day or two of full outage to do the upgrade that is more
acceptable than a week. We also wanted to know if people had
experienced data loss/corruption in the process and any other kinks.
We were planning on playing around on VM's to test the upgrade path
before committing to upgrading our larger systems. One of the questions
we had though was if we needed to run e2fsck before/after the upgrade as
that could add significant time to the outage for that to complete.
-Paul Edmon-
On 07/23/2018 01:18 PM, Jeff Johnson wrote:
You're running 2.10.4 clients against 2.5.34 servers? I believe there
are notable lnet attrs that don't exist in 2.5.34. Maybe a Whamcloud
wiz might chime in but I think that version mismatch might be
problematic.
You can do a testbed upgrade to test taking a ldiskfs volume from
2.5.34 to 2.10.4, just to be conservative.
--Jeff
On Mon, Jul 23, 2018 at 10:05 AM, Paul Edmon <ped...@cfa.harvard.edu
<mailto:ped...@cfa.harvard.edu>> wrote:
My apologies I meant 2.5.34 not 2.6.34. We'd like to get up to
2.10.4 which is what our clients are running. Recently we upgraded
our cluster to CentOS7 which necessitated the client upgrade. Our
storage servers though stayed behind on 2.5.34.
-Paul Edmon-
On 07/23/2018 01:00 PM, Jeff Johnson wrote:
Paul,
2.6.34 is a kernel version. What version of Lustre are you at
now? Some updates are easier than others.
--Jeff
On Mon, Jul 23, 2018 at 8:59 AM, Paul Edmon
<ped...@cfa.harvard.edu <mailto:ped...@cfa.harvard.edu>> wrote:
We have some old large scale Lustre installs that are running
2.6.34 and we want to get these up to the latest version of
Lustre. I was curious if people in this group have any
experience with doing this and if they could share them. How
do you handle upgrades like this? How much time does it
take? What are the pitfalls? How do you manage it with
minimal customer interruption? Should we just write off
upgrading and stand up new servers that are on the correct
version (in which case we need to transfer the several PB's
worth of data over to the new system)?
Thanks for your wisdom.
-Paul Edmon-
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--
------------------------------
Jeff Johnson
Co-Founder
Aeon Computing
jeff.john...@aeoncomputing.com
<mailto:jeff.john...@aeoncomputing.com>
www.aeoncomputing.com <http://www.aeoncomputing.com>
t: 858-412-3810 x1001 f: 858-412-3845
m: 619-204-9061
4170 Morena Boulevard, Suite C - San Diego, CA 92117
High-Performance Computing / Lustre Filesystems / Scale-out Storage
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--
------------------------------
Jeff Johnson
Co-Founder
Aeon Computing
jeff.john...@aeoncomputing.com <mailto:jeff.john...@aeoncomputing.com>
www.aeoncomputing.com <http://www.aeoncomputing.com>
t: 858-412-3810 x1001 f: 858-412-3845
m: 619-204-9061
4170 Morena Boulevard, Suite C - San Diego, CA 92117
High-Performance Computing / Lustre Filesystems / Scale-out Storage
_______________________________________________
Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit
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