Am Samstag, 2. Juli 2011 schrieben Sie: > On Sat, 2011-07-02 at 19:08 +0100, Leonidas Spyropoulos wrote: > > Hello, > > > > I just installed an archlinux with btrfs root partition and would > > like to set the correct mount properties > > Following this: > > https://wiki.archlinux.org/index.php/Solid_State_Drives > > it says there that I should use the discard mount parameter to enable > > TRIM. > > > > I would like to ask by using ssd mount parameter would TRIM be > > enabled? The SSD is Intel 320 Series 120Gb > > No, the "ssd" mount parameter has nothing to do with TRIM. [...] > The discard option is not currently automatically enabled; I think > there may have been some performance issues in certain cases with > drives that have slow trim implementations. But feel free to give it a > try.
As alternative use fstrim command from time to time or regularily during a cron job. From what I understood it does batched discard of all free blocks in a filesystem. merkaba:~> time fstrim -v / /: 5044342784 bytes was trimmed fstrim -v / 0,00s user 0,36s system 10% cpu 3,486 total merkaba:~> time fstrim -v /home /home: 27062587392 bytes was trimmed fstrim -v /home 0,00s user 0,92s system 20% cpu 4,512 total First one is BTRFS, second one is Ext4 - and will be, until I am convinced that BTRFS has a fully featured and working fsck and until its experimental flag is removed. fstrim is in util-linux(-ng) when its new enough. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
