Re: [ceph-users] error creating image in rbd-erasure-pool
Yes. On Wed, Mar 25, 2015 at 4:13 AM, Frédéric Nass frederic.n...@univ-lorraine.fr wrote: Hi Greg, Thank you for this clarification. It helps a lot. Does this can't think of any issues apply to both rbd and pool snapshots ? Frederic. On Tue, Mar 24, 2015 at 12:09 PM, Brendan Moloney molo...@ohsu.edu wrote: Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : * https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf Hi, You seem to be talking about pool snapshots rather than RBD snapshots. But in the linked document it is not clear that there is a distinction: Can I use snapshots with a cache tier? Snapshots are not supported in conjunction with cache tiers. Can anyone clarify if this is just pool snapshots? I think that was just a decision based on the newness and complexity of the feature for product purposes. Snapshots against cache tiered pools certainly should be fine in Giant/Hammer and we can't think of any issues in Firefly off the tops of our heads. -Greg ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Cordialement, Frédéric Nass. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
Hi Greg, Thank you for this clarification. It helps a lot. Does this can't think of any issues apply to both rbd and pool snapshots ? Frederic. - Mail original - On Tue, Mar 24, 2015 at 12:09 PM, Brendan Moloney molo...@ohsu.edu wrote: Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : * https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf Hi, You seem to be talking about pool snapshots rather than RBD snapshots. But in the linked document it is not clear that there is a distinction: Can I use snapshots with a cache tier? Snapshots are not supported in conjunction with cache tiers. Can anyone clarify if this is just pool snapshots? I think that was just a decision based on the newness and complexity of the feature for product purposes. Snapshots against cache tiered pools certainly should be fine in Giant/Hammer and we can't think of any issues in Firefly off the tops of our heads. -Greg ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Cordialement, Frédéric Nass. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
Hi Markus, On 24/03/2015 14:47, Markus Goldberg wrote: Hi, this is ceph version 0,93 I can't create an image in an rbd-erasure-pool: root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.rep 4096 4096 replicated pool 'bs3.rep' created root@bd-0:~# rbd create --size 1000 --pool bs3.rep test root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.era 4096 4096 erasure pool 'bs3.era' created root@bd-0:~# rbd create --size 1000 --pool bs3.era tapes2 rbd: create error: (95) Operation not supported2015-03-24 13:57:31.018411 7fc186b77840 -1 librbd: error adding image to directory: (95) Operation not supported RBD won't work with erasure coded pools. Instead you could try adding a replicated cache pool and use it. See http://docs.ceph.com/docs/master/rados/operations/cache-tiering/ for more information. Cheers Is this not possible at the moment or am i mistyping? BTW: Deleting or shrinking an empty image takes very, very lonng Thank you, Markus -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Loïc Dachary, Artisan Logiciel Libre signature.asc Description: OpenPGP digital signature ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] error creating image in rbd-erasure-pool
Hi, this is ceph version 0,93 I can't create an image in an rbd-erasure-pool: root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.rep 4096 4096 replicated pool 'bs3.rep' created root@bd-0:~# rbd create --size 1000 --pool bs3.rep test root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.era 4096 4096 erasure pool 'bs3.era' created root@bd-0:~# rbd create --size 1000 --pool bs3.era tapes2 rbd: create error: (95) Operation not supported2015-03-24 13:57:31.018411 7fc186b77840 -1 librbd: error adding image to directory: (95) Operation not supported Is this not possible at the moment or am i mistyping? BTW: Deleting or shrinking an empty image takes very, very lonng Thank you, Markus -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
- Mail original - Hi Markus, On 24/03/2015 14:47, Markus Goldberg wrote: Hi, this is ceph version 0,93 I can't create an image in an rbd-erasure-pool: root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.rep 4096 4096 replicated pool 'bs3.rep' created root@bd-0:~# rbd create --size 1000 --pool bs3.rep test root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.era 4096 4096 erasure pool 'bs3.era' created root@bd-0:~# rbd create --size 1000 --pool bs3.era tapes2 rbd: create error: (95) Operation not supported2015-03-24 13:57:31.018411 7fc186b77840 -1 librbd: error adding image to directory: (95) Operation not supported RBD won't work with erasure coded pools. Instead you could try adding a replicated cache pool and use it. See http://docs.ceph.com/docs/master/rados/operations/cache-tiering/ for more information. Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : * https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf What's wrong exactly with that ? i suppose that some features is not possible ? Do you know what ? Thanks, Stephane. Cheers Is this not possible at the moment or am i mistyping? BTW: Deleting or shrinking an empty image takes very, very lonng Thank you, Markus -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Loïc Dachary, Artisan Logiciel Libre ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
Is there an enumerated list of issues with snapshots on cache pools. We currently have snapshots on a cache tier and haven't seen any issues (development cluster). I just want to know what we should be looking for. On Tue, Mar 24, 2015 at 9:21 AM, Stéphane DUGRAVOT stephane.dugra...@univ-lorraine.fr wrote: Hi Markus, On 24/03/2015 14:47, Markus Goldberg wrote: Hi, this is ceph version 0,93 I can't create an image in an rbd-erasure-pool: root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.rep 4096 4096 replicated pool 'bs3.rep' created root@bd-0:~# rbd create --size 1000 --pool bs3.rep test root@bd-0:~# root@bd-0:~# ceph osd pool create bs3.era 4096 4096 erasure pool 'bs3.era' created root@bd-0:~# rbd create --size 1000 --pool bs3.era tapes2 rbd: create error: (95) Operation not supported2015-03-24 13:57:31.018411 7fc186b77840 -1 librbd: error adding image to directory: (95) Operation not supported RBD won't work with erasure coded pools. Instead you could try adding a replicated cache pool and use it. See http://docs.ceph.com/docs/master/rados/operations/cache-tiering/ for more information. Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf What's wrong exactly with that ? i suppose that some features is not possible ? Do you know what ? Thanks, Stephane. Cheers Is this not possible at the moment or am i mistyping? BTW: Deleting or shrinking an empty image takes very, very lonng Thank you, Markus -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Loïc Dachary, Artisan Logiciel Libre ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : * https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf Hi, You seem to be talking about pool snapshots rather than RBD snapshots. But in the linked document it is not clear that there is a distinction: Can I use snapshots with a cache tier? Snapshots are not supported in conjunction with cache tiers. Can anyone clarify if this is just pool snapshots? Thanks, Brendan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] error creating image in rbd-erasure-pool
On Tue, Mar 24, 2015 at 12:09 PM, Brendan Moloney molo...@ohsu.edu wrote: Hi Loic and Markus, By the way, Inktank do not support snapshot of a pool with cache tiering : * https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf Hi, You seem to be talking about pool snapshots rather than RBD snapshots. But in the linked document it is not clear that there is a distinction: Can I use snapshots with a cache tier? Snapshots are not supported in conjunction with cache tiers. Can anyone clarify if this is just pool snapshots? I think that was just a decision based on the newness and complexity of the feature for product purposes. Snapshots against cache tiered pools certainly should be fine in Giant/Hammer and we can't think of any issues in Firefly off the tops of our heads. -Greg ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
