Linux disks and disklist file

Hello,
        we recently added some Linux servers to our mix of *BSD servers.
The server is running FreeBSD 4.7p10 with amanda 2.4.4 (from /usr/ports,
looks like it's the base release, i.e. not the latest) and the clients are
running RedHat Linux 7.3 with amanda-client-2.4.2p2-7.  When running
amcheck, it complains that it can't find just one of the disks, yet all
are defined the same (i.e. sd1a, sd3a, etc). Here's the error :

Amanda Backup Client Hosts Check
--------------------------------
ERROR: <hostname>: [could not access sda3 (sda3): No such file or directory]

If I change the disk name on sd3a to include the full path, everything is
fine :

host sda1 comp-root-index
host /dev/sda3 comp-root-index
host sdb1 comp-user-index
host md0  comp-user-index

I don't see anything special about sd3a to cause this :

[root@host /]# df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sda3             14927248   1122460  13046520   8% /
/dev/sda1               497829     17867    454260   4% /boot
/dev/sdb1             17496684    136304  16471588   1% /var
/dev/md0              34993280     47604  33168096   1% /home
none                    515632         0    515632   0% /dev/shm

All other disks work fine without the full path, dumps worked fine last
night with the above config. I searched the archives and couldn't find
mention of this, and I've experienced the same problem on two identical
machines. Ideas?

Regards,
        Chris

Chris Miller
NetGate Internet