How are external USB drives processed? TFM wanted

Mikkel L. Ellertson mikkel at infinity-ltd.com
Wed Jun 14 14:21:50 UTC 2006


Roberto Ragusa wrote:
> 
> The <merge key="volume.policy.desired_mount_point"> part works perfectly,
> but I didn't find a way to avoid the annoying "sync" mount option: tried
>  <merge key="volume.policy.mount_option.sync" type="bool">false</merge>
> with no effect.
> 
> The sync option kills the writing speed of the disk: from >20MB/s to 2MB/s.
> 
> I'm still trying to like this automatic mounting stuff: at the moment it's
> more annoying than useful.
> There are many heavily configurable parts involved in the process:
> udev, hal, KDE/GNOME. A good "all-inclusive" documentation is still
> missing, as far as I've found around.
> 
If you do manage to remove the sync option, you will want to make
sure you unmount the drive and/or run sync and wait for disk
activity to stop before unplugging the drive. What the sync option
does is turn off delayed writes for the drive. This does hurt write
performance, but it tends to protect data.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!




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