[résolu] Re: / en lecture seulement

[Mathieu Payn]

Le 15. 01. 13 13:43, nicolas trote a écrit :
> re,
>
>
> Pour moi il te manque l'option "default".
>
>
> Ton disque dur est un SSD? Car il semble que ton fstab soit optimisé 
> pour les ssd? Si c'est le cas voici un passage de 
> https://wiki.archlinux.org/index.php/Solid_State_Drives
>
> Si c'est un ssd met les options defaults,relatime,discard
>
> Tips for Maximizing SSD Performance
>
> Mount Flags
>
> There are several key mount flags to use in one's /etc/fstab entries 
> for SSD partitions.
>
> noatime - Reading accesses to the file system will no longer result in 
> an update to the atime information associated with the file. The 
> importance of the noatime setting is that it eliminates the need by 
> the system to make writes to the file system for files which are 
> simply being read. Since writes can be somewhat expensive as mentioned 
> in previous section, this can result in measurable performance gains. 
> Note that the write time information to a file will continue to be 
> updated anytime the file is written to with this option enabled.
>
> However, this will cause issues with some programs such as Mutt, as 
> the access time of the file will eventually be previous than the 
> modification time, which would make no sense. Using the relatime 
> option instead of noatime will ensure that the atime field will never 
> be prior to the last modification time of a file.
>
> discard - The discard flag will enable the benefits of the TRIM 
> command as long as one is using kernel version >=2.6.33. It does not 
> work with ext3; using the discard flag for an ext3 root partition will 
> result in it being mounted read-only.
>
> /dev/sda1  /       ext4   defaults,relatime,discard   0  1
> /dev/sda2  /home   ext4   defaults,relatime,discard   0  2
>
> Warning: Users need to be certain that kernel version 2.6.33 or above 
> is being used AND that their SSD supports TRIM before attempting to 
> mount a partition with the discard flag. Data loss can occur otherwise!
>
Wouha! J'avais entendu dire que le wiki de arch linux était plutôt bien 
foutu. Là c'est parfait!
Changement effectué selon les conseils.

Du coup je trouve que la doc de ubuntu-fr devrait être plus explicite. 
Celle ssd_solid_state_drive est très précise (pointilleuse) mais on ne 
trouve pas ce simple conseil: quels flags dans /etc/fstab?
De l'autre côté, sur la page de fstab, aucune info sur la configuration 
avec un ssd.

ça mérite un ptit edit non?

Mathieu