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a7c4202cdd
QEMU introduced "discard" option for drive since commit a9384aff53,
<...>
@var{discard} is one of "ignore" (or "off") or "unmap" (or "on") and
controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
requests are ignored or passed to the filesystem. Some machine types
may not support discard requests.
</...>
This patch exposes the support in libvirt.
QEMU supported "discard" for "-drive" since v1.5.0-rc0:
% git tag --contains a9384aff53
contains
v1.5.0-rc0
v1.5.0-rc1
So this only detects the capability bit using virQEMUCapsProbeQMPCommandLine.
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| .. | ||
| basictypes.rng | ||
| capability.rng | ||
| domain.rng | ||
| domaincommon.rng | ||
| domainsnapshot.rng | ||
| interface.rng | ||
| Makefile.am | ||
| network.rng | ||
| networkcommon.rng | ||
| nodedev.rng | ||
| nwfilter.rng | ||
| secret.rng | ||
| storageencryption.rng | ||
| storagepool.rng | ||
| storagevol.rng | ||