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bhyve: Use fspacectl(2) for BOP_DELETE on regular file images
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Authored by khng on Feb 23 2021, 6:43 AM.

Details

Summary

bhyve can also make use of fspacectl(2) to implement BOP_DELETE with
hole-punching. Since it is not desirable to do zero-filling for large
DEALLOCATE/UNMAP range, candelete is not set if pathconf(2) indicates
that the underlying file system does not support native
VOP_DEALLOCATE(9).

Submitted by: Ka Ho Ng <khng@freebsdfoundation.org>
Sponsored by: The FreeBSD Foundation

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Repository
R10 FreeBSD src repository
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Automatic diff as part of commit; lint not applicable.
Unit
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Event Timeline

khng requested review of this revision.Feb 23 2021, 6:43 AM

Bump due to updates of D28347 (fspacectl(2) added new param)

This revision is now accepted and ready to land.Aug 5 2021, 11:30 PM

Loop over to guarantee the whole region is finished.

This revision now requires review to proceed.Aug 7 2021, 8:13 AM
This revision is now accepted and ready to land.Aug 7 2021, 8:49 AM