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42322a59c7
Implements incremental backup support for the NAS backup provider on KVM, using QEMU dirty bitmaps and libvirt's backup-begin API. RFC: apache/cloudstack#12899. For large VMs this reduces daily backup storage 80–95% and shortens backup windows from hours to minutes (e.g. a 500 GB VM with moderate writes goes from ~500 GB/day to ~5–15 GB/day after the initial full backup). Signed-off-by: James Peru <jmsperu@gmail.com> Co-authored-by: jmsperu <jmsperu@users.noreply.github.com> Co-authored-by: Abhisar Sinha <63767682+abh1sar@users.noreply.github.com> |
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