External USB hard drive "loosing" connection [Maxtor onetouch]
haniganwork at earthlik.net
Wed Mar 12 19:12:13 UTC 2008
On Wed, 2008-03-12 at 18:31 +1100, Owen Townend wrote:
> On Wed, Mar 12, 2008 at 5:48 PM, Fajar Priyanto <fajarpri at cbn.net.id>
> On Wednesday 12 March 2008 11:47:33 Hemant Bist wrote:
> > Hi,
> > I recently bought a Maxtor onetouch extenal USB drive 500GB
> for backup for
> > my ubuntu dapper system.
> > Every morning the backup script fails because it has problem
> in accessing
> > the drive. Once I manually remount(sudo umount /dev/sda1;
> sudo mount
> > /dev/sda1) the drive and restart backup it works fine.
> > Has anyone seen this problem before? Any workarounds for
> Maybe the auto-sleep disconnect the drive? Is there any
> related messages
> in /var/log/syslog?
> As a work around you can set a crontab to prevent the drive
> from sleeping,
> maybe a 'ls -l /var/backup' for every 10 minutes.
> I agree it sounds like a sleep issue, but this solution seems like
> if this is the only time it is an issue why not add the remount to the
> of the backup script?
> You _may_ be able to run `sudo mount -o remount /dev/sda1` instead of
> the two separate commands.
> If you don't want to have to enter a sudo password and also don't want
> give blanket nopasswd access to mount then write your remounts in a
> chown root; chmod 744; then add permissions for the script to you
I had this problem with the external drive I use for backup. I found if
it was mounted with automount it would unmount after a certain amount of
time. I tried mounting it from the command line and it stayed mounted. I
did have trouble with my external hard drive over heating so I put a
small fan on it and have not had any further trouble.
More information about the ubuntu-users