[LEFT]I wonder if I put down the good things for the ssd in fstab with btrfs?
/ btrfs defaults,noatime,discard 0 0
[/LEFT]
Thanks, GJ
[LEFT]
[/LEFT]
I’d rather say no.
AFAIK btrfs detects itself that it’s an SSD, and uses appropriate parameters in that case.
At least on 13.2, I’m not sure about 13.1.
thx, so i remove noatime,discard.
And it is Of course
fstab, ssd and btrfs :shame:
On 2014-11-07 14:46, GJElde wrote:
>
> thx, so i remove noatime,discard.
I would leave noatime. I do on rotating disks, it causes write activity
every time you read a file.
–
Cheers / Saludos,
Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)
Hi
I agree, leave the defaults (rw,relatime,ssd,space_cache) for btrfs.
Found something import-end on this site:
https://sites.google.com/site/easylinuxtipsproject/ssd-in-opensuse
*During installation: choose EXT4
** 6. The best file system (formatting) for an SSD, is EXT4.
In EXT4, Linux writes every few seconds a journal to the hard disk, containing the whereabouts of the files. That causes some writing activity, but not much.
This feature is very important for recovery after a system crash. So it’s best to keep it enabled.
Warning: do not select BTRFS! In openSUSE 13.2 BTRFS is the default file system during the installation, so be careful to change that.
BTRFS causes a lot of write actions, because of the snapshots that Snapper makes of your system. That’s not good for an SSD…
*
This is a good point!
I think i do a fresh install tomorrow and go back to ext4 for all hdd and ssd!
You can disable snapshots. There’s a prominent checkbox to do that during installation, and you can of course also do it later on.
Still I don’t think that this really is a problem.
On Fri 07 Nov 2014 04:26:09 PM CST, GJElde wrote:
BTRFS causes a lot of write actions, because of the snapshots that
Snapper makes of your system. That’s not good for an SSD…
This is a good point!
I think i do a fresh install tomorrow and go back to ext4 for all hdd
and ssd!
Hi
That is just FUDdy 
I have an OCZ Vertex 4 here at 8343 hours, it’s rated at 20GiB writes
per day at most I hit 6.5GiB’s I need to work it harder…
My Crucial is newer and has run a btrfs partition from the get go, it’s
at 2273 hours and hits about 2.5GiB’s a day.
My OCZ Agility 3 is at 16,622 hours again with btrfs and gets to
3.5GiB’s a day.
None of these drives are wearing out and I expect them to carry on for
many years to come…
–
Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter #276890)
SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel 3.12.28-4-default
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Out of interest where can you disable snapshots once you have installed? I have searched in Yast and cannot see any setting… Also does openSUSE provide documentation on btrfs snapper etc as I can’t find any. It seems Archlinux consider btrfs as still experimental and yet enterprise distros use it so I’m confused 
See here:
http://doc.opensuse.org/products/draft/SLES/SLES-admin_sd_draft/cha.snapper.html#sec.snapper.disable
(the opensuse documentation is actually found at http://activedoc.opensuse.org/, but that is down at the moment)
Thanks for the quick response! I will read now and that explains why I couldn’t find the documentation 