Problem mounting USB external drive

Problem mounting USB external drive

[Andrew Robinson]

I've got an external drive in a USB 2.0 enclosure that I would like to 
have mounted when I plug it in. I'm running Fedora Core 1. I have 
created an entry in /etc/updfstab.conf that successfully adds an entry 
to the /etc/fstab and creates a mount point in /mnt. I can then mount 
the drive from the CLI. Poking around the Fedora mailing list, the 
answer to automated mounting seemed to lie in the 
/etc/hotplug/usb/usb-storage script. I created the script and verified 
that it was executed. However, updfstab does not seem to get run until 
after usb-storage is completed. Hence, no automatic mount.

My question is this. What is the correct way within the hotplug 
framework to get a hot-plugged drive to mount automatically?

If this is the wrong forum to ask this question, I apologize. Could 
someone point me in the right direction to ask it.

Thanks!

Andrew Robinson



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Re: Problem mounting USB external drive

[Greg KH]

On Mon, May 03, 2004 at 12:09:14AM -0500, Andrew Robinson wrote:
> 
> My question is this. What is the correct way within the hotplug 
> framework to get a hot-plugged drive to mount automatically?

Use something like devlabel.  It should handle it for you just fine.

Good luck,

greg k-h


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Re: Problem mounting USB external drive

[Andrew Robinson]

Greg KH wrote:
> On Mon, May 03, 2004 at 12:09:14AM -0500, Andrew Robinson wrote:
> 
>>My question is this. What is the correct way within the hotplug 
>>framework to get a hot-plugged drive to mount automatically?
> 
> 
> Use something like devlabel.  It should handle it for you just fine.
> 

After studying the man page and playing with the program a bit, I cannot 
figure out how to get devlabel to work for me. When I plug in the drive, 
updfstab adds this entry to the /etc/fstab:

/dev/extdrive  /mnt/extdrive  auto  noauto,owner,kudzu 0 0

That is based on this entry in the /etc/updfstab.conf file:

device extdrive {
     match   hd "WD800JB-00FMA0"
     symlink true
}

The device symlink is this:

lrwxrwxrwx  1 root root 9 May  3 16:11 /dev/extdrive -> /dev/sda1

So to get a reference to the symlink in the fstab file, I have to 
configure updfstab to create that link. When I try to add this entry to 
devlabel, it complains that the symlink already exists. So I turned off 
the drive and tried to add the entry to devlabel, and it complained that 
the device file /dev/sda1 did not exist. The other way to add a devlabel 
entry is by UUID, but this drive does not seem to have one. When I run 
/usr/bin/partition_uuid /dev/sda1 (when /dev/sda1 exists), I get this 
response:

partition_uuid: partition does not appear to have a UUID

When I run /usr/bin/scsi_unique_id against the device file, I get this 
response:

model: WDC     WD800JB-00FMA0
page83: No page83 information found.
page80: No page80 information found.

I could be missing something (I never underestimate my ability to screw 
up), but it appears devlabel will not work for me in this instance. That 
gets me back to my original problem. When I plug in this disk drive, I 
get a valid entry in /etc/fstab. How do I mount that entry during the 
hotplug sequence?

Thanks!

Andrew Robinson




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