recently I noticed that neither
show the discard flag for my ext4 partitions anymore.
The discard option is present in fstab.
mount -oremount,discard /dev/sda1
tune2fs -o discard /dev/sda1
don't change anything.
dmesg |grep discard
EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,data=writeback,nobarrier,nobh,discard
So, dmesg indicates that the filesystem was mounted with discard enabled
(but again /proc/mounts does not).
Remember everything was OK until yesterday or so.
Already tried different kernel versions to no avail.
Also, when I boot another distro everything shows up correct.
Im running Debian sid, amd64.
SSD is a Crucial M4 128 GB, newest F/W (009).