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[Bug 1925094] Re: DISCARD support for Crypto Block Devices
From: |
Launchpad Bug Tracker |
Subject: |
[Bug 1925094] Re: DISCARD support for Crypto Block Devices |
Date: |
Thu, 15 Jul 2021 04:17:26 -0000 |
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1925094
Title:
DISCARD support for Crypto Block Devices
Status in QEMU:
Expired
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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