I have an external USB disk that I mount with a custom udev rule.
This has worked perfectly for ages, through many kernel versions. But
since I upgraded my LFS 6.5 system to 2.6.34 the disk does not appear
in /etc/mtab, and therefore not in the output of mount either (which
is annoying since it breaks my backup script). The disk definitely is
mounted; I can see its contents in the mount point and it appears in
/proc/mounts. What on earth has changed in this kernel version?
Here's the udev rule:
# cat /etc/udev/rules.d/01-local-external-disk.rules
KERNEL=="sd?1", SUBSYSTEMS=="usb", ATTRS{product}=="Seagate External Drive",
ATTRS{serial}==" SW063611533", RUN+="/sbin/udev_local_external_disk"
And here's the mount script that rule runs:
# cat /sbin/udev_local_external_disk
#!/bin/sh
mount -t ext3 -o nodev,noexec,nosuid,ro "$DEVNAME" /media/disk/number/0
The weird thing is that if I unmount the device and run the script
manually:
# DEVNAME=/dev/sdd1 /sbin/udev_local_external_disk
...then the device does appear in /etc/mtab and the mount output. Now
SysV must be running the script at boot time, otherwise the device
would not mount at all. Why does the script behave differently at
boot time rather than afterwards?
Any ideas? I'm stumped.
Regards,
Jeremy Henty
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