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NAS-135244 / 25.10 / Fix configuration for SMB Veeam Fast Clone

Open anodos325 opened this issue 6 months ago • 1 comments

This commit adds a new SMB share purpose of VEEAM_REPOSITORY_SHARE, which requires the ZFS recordsize to be set to 128 KiB (per guidance from Veeam) and sets the underlying SMB block size to 128 KiB so that FileFsSizeInformation the Sectors Per Allocation Unit is reported to Veeam Backup & Restore in such a way that it will use the correct offsets and lengths when it issues FSCTL_DUPLICTE_EXTENTS_TO_FILE requests. If this is not done, then Fast Copy requests will be rejected by ZFS due to improper alignment and ZFS will fallback to doing an internal copy of the specified range.

anodos325 avatar Jun 19 '25 17:06 anodos325

Jira URL: https://ixsystems.atlassian.net/browse/NAS-135244

bugclerk avatar Jun 19 '25 17:06 bugclerk

This PR has been merged and conversations have been locked. If you would like to discuss more about this issue please use our forums or raise a Jira ticket.

bugclerk avatar Jun 23 '25 18:06 bugclerk