Chris Murphy - 13.08.21, 20:14:40 CEST:

On Fri, Aug 13, 2021 at 3:50 AM Sebastian Döring 

[off-list ref] wrote:

quoted

quoted

It is BTRFS single profile on LVM on LUKS. Mount options are:

...

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I thought that a Samsung 980 Pro can easily handle "discard=async"
so I> 

used it.

LUKS doesn't do discard unless you explicitly enable and force it.
Have you?

`cryptsetup open` doesn't allow discards by default, but some distro
installers do enable it by default. The most likely place to find out
is looking at /etc/crypttab

It has option "discard" in there.

A few days ago BTRFS for /home had corruption errors that lead to it 
being marked read only and then being unmountable until I used "btrfs 
rescue zero-log". After that I was able to rsync almost all files to a 
freshly created BTRFS LVM LV and recover the rest from backup. This 
happened after an unintended laptop battery outage.

But I better report it in a different thread.

Best,
-- 
Martin