Am 04.03.20 um 16:02 schrieb Wido den Hollander: > > > On 3/4/20 3:49 PM, Lars Marowsky-Bree wrote: >> On 2020-03-04T15:44:34, Wido den Hollander <wido@xxxxxxxx> wrote: >> >>> I understand what you are trying to do, but it's a trade-off. Endless >>> snapshots are also a danger because bit-rot can sneak in somewhere which >>> you might not notice. >>> >>> A fresh export (full copy) every X period protects you against this. >> >> Hrm. We have checksums on the actual OSD data, so it ought to be >> possible to add these to the export/import/diff bits so it can be >> verified faster. >> >> (Well, barring bugs.) >> > > I mainly meant bugs, I should have clarified that better. > > Do you trust the technology you want to backup to create the proper > backup for you? With that I mean, what if librbd or librados contains a > bug which corrupts all your backups? > > You think the backups all went fine because the snapshots seem > consistent on both ends, but you are not sure until you actually test a > restore. Yes and know. If the object checksums inside ceph are equal it must be a really bad bug. Sure this can happen but i think the chances are very low Stefan > > Those are the things I take into consideration when using such technologies. > > Wido > >> >> >> > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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