Re: Corruption errors on Samsung 980 Pro

[Martin Steigerwald <martin@lichtvoll.de>]

Chris Murphy - 13.08.21, 20:14:40 CEST:
> On Fri, Aug 13, 2021 at 3:50 AM Sebastian Döring 
<moralapostel@gmail.com> wrote:
> > >It is BTRFS single profile on LVM on LUKS. Mount options are:
> > ...
> > 
> > >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