Thanks for all the cool info. In the past, I have tried to run lshal -monitor. HAL seems to detect my devices just fine and in good speed. I'll try some of your suggestions.
> (the ending /. makes sure that the command cannot finish > until the referent > is actually mounted -- with "ls I never realized you could do this. Beats the heck out of sending the command over and over until the thing is finally mounted. --- On Wed, 8/20/08, Jim Carter <[EMAIL PROTECTED]> wrote: > From: Jim Carter <[EMAIL PROTECTED]> > Subject: Re: [autofs] Is Autofs 5 Slower Than 4 > To: "Thanh Tran" <[EMAIL PROTECTED]> > Cc: "Jeff Moyer" <[EMAIL PROTECTED]>, autofs@linux.kernel.org > Date: Wednesday, August 20, 2008, 12:28 PM > On Wed, 20 Aug 2008, Thanh Tran wrote: > > > I upgraded my entire OS from Fedora 5 to 8. By slow, > I mean around 20 > > seconds to detect and mount. There are too many > variables. I was hoping > > it would be a simple polling flag that could be > switched in autofs. I > > can live with the slower time. I did notice that it > took a long time > > only when I physically removed the drive and > re-inserted the drive. > > When I use the "umount" command and not > remove the drive, I can quickly > > change directory back to drive and it mounts in like 2 > seconds at most. > > Thanks for the help. > > It sounds like the issue is with hotplug -- automount > can't mount a drive > when the kernel doesn't admit that it exists. If you > could capture syslog > traffic from the kernel at the "debug" level, you > could see from the > timestamps exactly how long it took to get the USB device > alive enough to > be mounted. Also, I can easily imagine a race condition in > which the > device is partially hotplugged, enough that the mount > command doesn't fail > but does get stuck in some kind of timeout. If you wanted > to put a lot of > work into the project, you could do this: > > Starting with the device unmounted and removed, insert it > and > simultaneously press enter on a command like this: > time /bin/sh -c "sleep 1 ; ls -ld > /media/myusbdrive/." > (the ending /. makes sure that the command cannot finish > until the referent > is actually mounted -- with "ls > /media/myusbdrive" you wonder if an > optimization might deliver only confirmation that the mount > point is in the > /media directory.) Unmount and repeat, varying the sleep > time from 1 to 20 > secs, and see if there's a specific time, probably > about 5 secs, where > the long extra delay does not happen. > > Jeff Moyer mentioned that most people use HAL and friends > to mount > hotplugged volumes. I've written up a small > "howto" on this topic. See > "Jim Carter's Bugfixes", > http://www.math.ucla.edu/~jimc/documents/bugfix.html > about halfway through, the item titled "Automatic > Volume Mounting Without > KDE or Gnome", and the items following. > > James F. Carter Voice 310 825 2897 FAX 310 206 > 6673 > UCLA-Mathnet; 6115 MSA; 520 Portola Plaza; Los Angeles, > CA, USA 90095-1555 > Email: [EMAIL PROTECTED] http://www.math.ucla.edu/~jimc > (q.v. for PGP key) _______________________________________________ autofs mailing list autofs@linux.kernel.org http://linux.kernel.org/mailman/listinfo/autofs
