CBT: the thread to centralize your feedback
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After a number of XOA Updates i decided to test CBT with snapshot delete again.
Instead of " "can't create a stream from a metadata VDI, fall back to a base" i am seeing a more verbose error but the issue remains the same. In a 2 host pool with shared NFS storage if i have CBT with Snap delete enabled after a VM is migrated from host A to host B (remaining on the shared NFS SR) and a backup runs the delta backup fails and a full runs. This time the error shows " Can't do delta with this vdi, transfer will be a full"
This is with XOA Latest: 5.100.0
I have attached the backup log if this helps.
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@flakpyro in general this error means that the cbt is not valid, we have seen this as well and i know vates is looking into this. In general we saw this problem more on nfs then on iscsi, not shure if it is nfs related but maybe if u have access to an iscsi target try your results there.
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@rtjdamen this test pool is running on TrueNAS, so i could configure iSCSI. Our production is on NFS so i tried to keep test close to the same as far as storage is concerned. We currently use NBD + CBT without the snapshot delete function in production and it works well via NFS. Will continue to keep testing as updates roll out and look forward to when this is completely stable. If there's anything anyone at Vates needs log or test wise i'm happy to help!
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@flakpyro i think that would be a good test, can u check how it is behaving on iscsi on your end?