On Sat, Apr 26, 2025 at 03:01:01PM +0300, Sulev-Madis Silber wrote:
that might be it!? there is hdd on machine that was tested but now never really likes to complete the long smart tests, and short take ages. there are no "usual" disk errors, tho. that hdd is part of 2 disk mirror that the git runs on
These are exactly the symptoms that led me to junk 2x HDs. One was CMR the other SMR. Smart tests failing to execute normally is a sure sign it's hardware.
i'm wondering why noone else spots it much, tho?
maybe they do but in the end attribute it to hardware
and this is not fixed on current either? and fix is in zfs? and ufs, as tested by others, would not be affected... why?
I've also seen the same thing happen in a microSD and a USB2/3 context, both were UFS2 not ZFS.
tl;dr - suspected issue of zfs on slow device filling up *entire* ram with write buffers, leaving userland killed and system in unusable state
Going by what you've described here, I'd say the problem is down to hardware. --
