This pool is an LXD pool, created by LXD for containers. Maybe LXD when create a container, create a snapshot from the source image and clone it. I forget about this. Probably this is a reason why I can't restore only this pool. I can restore my images, after I set a parent ID obtained from a newly created container, but with this id I link a wrong image as parent image. I can simply determinate de original source image, and I can set the correct parent ID. 2017. 10. 16. 23:19 keltezéssel, Jason Dillaman írta: > Your error message indicates it failed to open a parent image of a clone: > > 2017-10-16 13:18:17.404858 7f35a37fe700 -1 > librbd::image::RefreshParentRequest: failed to open parent image: (2) > No such file or directory > > That means that the parent image has a snapshot that the clone is > linked against. > > On Mon, Oct 16, 2017 at 4:10 PM, Nagy Ákos <nagy.akos@xxxxxxxxxxxxxx> wrote: >> Thanks, >> I don't have any snapshot or clone, only some standalone images. >> >> An follow the linked thread, I can change my id's, and I can restore all >> the images. >> >> Thanks a lot! >> >> >> 2017. 10. 16. 17:21 keltezéssel, Jason Dillaman írta: >>> The pool ids can be updated to point to the correct pool [1] with >>> enough patience. The larger issue is that the snapshots are not >>> preserved and thus your cloned images can be corrupted if the parent >>> image was modified after the creation of the protected snapshot. >>> >>> [1] http://lists.ceph.com/pipermail/ceph-users-ceph.com/2015-May/001398.html >>> >>> On Mon, Oct 16, 2017 at 8:11 AM, Wido den Hollander <wido@xxxxxxxx> wrote: >>>>> Op 16 oktober 2017 om 13:00 schreef Nagy Ákos <nagy.akos@xxxxxxxxxxxxxx>: >>>>> >>>>> >>>>> Thanks, >>>>> >>>>> but I erase all of the data, I have only this backup. >>>> I hate to bring the bad news, but it will not work. The pools have different IDs and that will make it very difficult to get this working again. >>>> >>>> Wido >>>> >>>>> If the restore work for 3 pools, I can do it for the remainig 2? >>>>> >>>>> What can I try to set, to import it or how I can find this IDs? >>>>> >>>>> 2017. 10. 16. 13:39 keltezéssel, John Spray írta: >>>>>> On Mon, Oct 16, 2017 at 11:35 AM, Nagy Ákos <nagy.akos@xxxxxxxxxxxxxx> wrote: >>>>>>> Hi, >>>>>>> >>>>>>> I want to upgrade my ceph from jewel to luminous, and switch to bluestore. >>>>>>> >>>>>>> For that I export the pools from old cluster: >>>>>> This is not the way to do it. You should convert your OSDs from >>>>>> filestore to bluestore one by one, and let the data re-replicate to >>>>>> the new OSDs. >>>>>> >>>>>> Dumping data out of one Ceph cluster and into another will not work, >>>>>> because things like RBD images record things like the ID of the pool >>>>>> where their parent image is, and pool IDs are usually different >>>>>> between clusters. >>>>>> >>>>>> John >>>>>> >>>>>>> rados export -p pool1 pool1.ceph >>>>>>> >>>>>>> and after upgrade and osd recreation: >>>>>>> >>>>>>> rados --create -p pool1 import pool1.ceph >>>>>>> >>>>>>> I can import the backup without error, but when I want to map an image, I >>>>>>> got error: >>>>>>> >>>>>>> rbd --image container1 --pool pool1 map >>>>>>> >>>>>>> rbd: sysfs write failed >>>>>>> In some cases useful info is found in syslog - try "dmesg | tail". >>>>>>> rbd: map failed: (2) No such file or directory >>>>>>> >>>>>>> dmesg | tail >>>>>>> >>>>>>> [160606.729840] rbd: image container1 : WARNING: kernel layering is >>>>>>> EXPERIMENTAL! >>>>>>> [160606.730675] libceph: tid 86731 pool does not exist >>>>>>> >>>>>>> >>>>>>> When I try to get info about the image: >>>>>>> >>>>>>> rbd info pool1/container1 >>>>>>> >>>>>>> 2017-10-16 13:18:17.404858 7f35a37fe700 -1 >>>>>>> librbd::image::RefreshParentRequest: failed to open parent image: (2) No >>>>>>> such file or directory >>>>>>> 2017-10-16 13:18:17.404903 7f35a37fe700 -1 librbd::image::RefreshRequest: >>>>>>> failed to refresh parent image: (2) No such file or directory >>>>>>> 2017-10-16 13:18:17.404930 7f35a37fe700 -1 librbd::image::OpenRequest: >>>>>>> failed to refresh image: (2) No such file or directory >>>>>>> rbd: error opening image container1: (2) No such file or directory >>>>>>> >>>>>>> >>>>>>> I check to exported image checksum after export and before import, and it's >>>>>>> match, and I can restore three pools with one with 60 MB one with 1.2 GB and >>>>>>> one with 25 GB of data. >>>>>>> >>>>>>> The problematic has 60 GB data. >>>>>>> >>>>>>> The pool store LXD container images. >>>>>>> >>>>>>> Any help is highly appreciated. >>>>>>> >>>>>>> -- >>>>>>> Ákos >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> ceph-users mailing list >>>>>>> ceph-users@xxxxxxxxxxxxxx >>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>>>>>> >>>>> -- >>>>> Ákos >>>>> >>>>> >>>>> _______________________________________________ >>>>> ceph-users mailing list >>>>> ceph-users@xxxxxxxxxxxxxx >>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>>> _______________________________________________ >>>> ceph-users mailing list >>>> ceph-users@xxxxxxxxxxxxxx >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >> -- >> Ákos >> >> > > -- Ákos _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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