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 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1925094/+subscriptions