Public bug reported:
It appears that running `fstrim` or similar is useless when the VM is on
a LUKS-encrypted device using QEMU's native LUKS support.
Looking at the source, it seems that block/crypto.c lacks an
implementation for bdrv_co_pdiscard, which probably needs to delegate to
a per-crypto type discard helper.
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1925094
Title:
DISCARD support for Crypto Block Devices
Status in QEMU:
New
Bug description:
It appears that running `fstrim` or similar is useless when the VM is
on a LUKS-encrypted device using QEMU's native LUKS support.
Looking at the source, it seems that block/crypto.c lacks an
implementation for bdrv_co_pdiscard, which probably needs to delegate
to a per-crypto type discard helper.
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