Our understanding is there is no supported way to create an SBA-enabled pool
other than as part of a filesystem that is already at a sufficient 5.x level
(we've heard this a couple times in discussions with multiple IBMers).
The other reasons for us include the perceived difficulty of in-place ESS
upgrades compared to reprovisioning them as fresh building blocks in a new
cluster. We've complained about how labor-intensive ESS upgrades are before -
last time we did an upgrade there were over 15 manual steps per ess io node
(many with wait 10m+ time between them and a non-automated check step) in
addition to the 25+ steps on the management server. This becomes a multi-week
project when you have 20+ ess io nodes and can only do 2-3 a day with careful
babysitting. We'd be very interested in hearing the ess upgrade experiences
from other large sites, but perhaps this is diluting the original purpose of
the thread.
Best,
Chris
On 3/29/19, 1:30 PM, "gpfsug-discuss-boun...@spectrumscale.org on behalf of
Matt Cowan" <gpfsug-discuss-boun...@spectrumscale.org on behalf of
co...@bnl.gov> wrote:
On Fri, 29 Mar 2019, Christopher Black wrote:
...
> Main reasoning of the new cluster for us is to be able to make a fully
V19+ filesystem with
> sub-block allocation.
>
> Our understanding from talking to IBM is that there is no way to upgrade
a pool to be
> SBA-compatible, nor is it advisable to try to create a new pool or
filesystem in same
> cluster and then migrate (partially because migrating between filesystems
within a cluster
> with afm would require going through nfs stack afaik).
...
Could you just use policy to migrate to the new pool? no afm required.
"partially because"... what are the other reasons?
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=C9X8xNkG_lwP_-eFHTGejw&r=DopWM-bvfskhBn2zeglfyyw5U2pumni6m_QzQFYFepU&m=7duFmPP7emxED3rEn1IeLfCZkkUT683Cuz4xrNm83lM&s=KjMtVfNRTl4P2CiSBqR3LYx8fdyjxw5Yh4e3oSBaWTc&e=
________________________________
This message is for the recipient’s use only, and may contain confidential,
privileged or protected information. Any unauthorized use or dissemination of
this communication is prohibited. If you received this message in error, please
immediately notify the sender and destroy all copies of this message. The
recipient should check this email and any attachments for the presence of
viruses, as we accept no liability for any damage caused by any virus
transmitted by this email.
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
