ext4, ssd, discard option

christophe · 2012-09-21 00:13:17

I am installing / on an ssd

Is /etc/init.d/rcS the right place to add a noatime,discard option when remounting / ?

christophe · 2012-09-21 17:15:24

i did try, and it seems to work

However it seems / is mounted as ext2 ?

I tried both from an ext3 and ext4 fs and i get

tux@slitaz:~$ mount

rootfs on / type rootfs (rw)

/dev/root on / type ext2 (rw,noatime,barrier=1,data=ordered)

Why is it mounted as ext2 ? (or shows as such: i read that barrier is an ext3 option ?)

Can I safely remount it as ext4 in /etc/init.d/rcS with option discard

and can I safely assume that trim will be supported as it should ? (the fs is ext4 and on a SSD)

Thanks

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