Does rbd export and export-diff and like wise import and import-diff grantee the consistency of data? So, that if the image is "damaged" during the transfer, would this be flagged by the other side? Or would it simply leave the broken image on the destination cluster? Cheers ----- Original Message ----- From: "Wido den Hollander" <wido@xxxxxxxx> To: ceph-users at lists.ceph.com Sent: Monday, 25 August, 2014 10:31:14 AM Subject: Re: ceph rbd image checksums On 08/24/2014 08:27 PM, Andrei Mikhailovsky wrote: > Hello guys, > > I am planning to do rbd images off-site backup with rbd export-diff and I was wondering if ceph has checksumming functionality so that I can compare source and destination files for consistency? If so, how do I retrieve the checksum values from the ceph cluster? > That would be rather difficult. There is no checksum, but to have a valid checksum you would need to verify the whole RBD image. That means reading the whole image and calculating the checksum based on that. > Thanks > > Andrei > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Wido den Hollander 42on B.V. Ceph trainer and consultant Phone: +31 (0)20 700 9902 Skype: contact42on _______________________________________________ ceph-users mailing list ceph-users at lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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