Cannot backup /dev in RHAS 4.0(AMD 64bit)

[dataprotector]

/dev was not backed up.

On Linux, there are three ways to find the list of mounted filesystems.

a) From file /etc/mtab
b) From file /proc/mounts
c) From the command df.

The mounted filesystem /dev was not listed in /etc/mtab, but was available in /proc/mounts.
The Linux documentation says that /proc/mounts is a more reliable place for information on mounted
filesystems, but our backup application is designed to use the /etc/mtab.

[/b] what is the the differences in /dev listings in /etc/mtab
and /proc/mounts?[/b]

[serz]

Why would you backup /dev? It's useless, same for /proc and temporary dirs (/tmp and /var/tmp).

[dataprotector]

using a Backup tool I was taking Host backup, while persuing it I face problems only with /dev directory.

[serz]

using a Backup tool I was taking Host backup, while persuing it I face problems only with /dev directory.

Maybe you can configure it to not backup those?