Hi Jason, This really did the trick! I can now rescue my rbds, thank you very much!
Sincerely, Craig Chi (Product Developer) Synology Inc. Taipei, Taiwan. On 2016-11-21 21:44, Jason Dillaman<jdill...@redhat.com>wrote: > You are correct -- rbd uses the pool id as a reference and now your pool has > a new id. There was a thread on this mailing list a year ago for the same > issue [1]. [1] > http://lists.ceph.com/pipermail/ceph-users-ceph.com/2015-May/001456.html On > Sun, Nov 20, 2016 at 2:19 AM, Craig Chi<craig...@synology.com>wrote:>Hi > Cephers,>>I am tuning the pg numbers of my OpenStack pools.>>As everyone > knows, the pg number of a pool can not be decreased, so I came>up with an > idea to copy my pools to new pools with lower pg_num and then>delete the > original pool.>>I execute following commands:>>rados cppool volumes > new-volumes>rados cppool images new-images>ceph osd pool rm volumes volumes > --yes-i-really-really-mean-it>ceph osd pool rm images images > --yes-i-really-really-mean-it>ceph osd pool rename new-volumes volumes>ceph > osd pool rename new-images images>>But after that, when I want to query the > usage of volumes by `rbd -p volumes>du`, it returns a mass of error messages > like>>2016-11-20 08: 01:47.12 6068 7fa8337fe700 -1 librbd::image::OpenRequest:>failed to retreive name: (2) No such file or directory>2016-11-20 08:01:47.126119 7fa832ffd700 -1>librbd::image::RefreshParentRequest: failed to open parent image: (2) No>such file or directory>2016-11-20 08:01:47.126135 7fa832ffd700 -1 librbd::image::RefreshRequest:>failed to refresh parent image: (2) No such file or directory>2016-11-20 08:01:47.126150 7fa832ffd700 -1 librbd::image::OpenRequest:>failed to refresh image: (2) No such file or directory>>I think it may be caused by the change of "images" pool id, right?>>Is it possible to re-reference the rbds in "volumes" on new "images" pool?>Or is it possible to change or specify the pool id of new pool?>>Any suggestions are very welcome. Thanks>>Sincerely,>Craig Chi (Product Developer)>Synology Inc. Taipei, Taiwan.>>>>>Sent from Synology MailPlus>_______________________________________________>ceph-users mailing list>ceph-users@lists.ceph.com>http://lists.ceph.com/listinfo.cg i/ceph-u sers-ceph.com>-- Jason
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