Hello, Gentoo.
Seeing that I've had my "new" box for three years, now, I'm thinking
it's about time to run fstrim. But how?
I've got a pair of NVMe drives in a RAID 1 configuration. On the main
partition, /dev/md126, I've got several LVM2 things. In the volume
group(s?) I've got things like /dev/mapper/vg-home mounted on /home.
Most of my partitions are ext4.
When I try things like
# fstrim --dry-run /home
, I get the response:
/home: 0 B (dry run) trimmed
. What does this mean, in particular the "0 B" bit? Does it mean that
if I let it rip, it would trim 0 Bytes?
Will I do any damage if I let it go ahead (without the --dry-run)? Will
this actually do any good? Will fstrim work together with LVM volumes?
Thanks for any help!
--
Alan Mackenzie (Nuremberg, Germany).
