fsck and memory filesytems (fsck_mfs: No such file or directory)

[Christopher Key]

Hello,

I recently had a powercut to my FreeBSD home server, and I'm now getting 
the following messages at startup:

Starting file system checks:
/dev/ad8s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s1a: clean, 466797 free (2837 frags, 57995 blocks, 0.6% 
fragmentation)
fsck: exec fsck_mfs for md in /sbin:/usr/sbin: No such file or directory
fsck: exec fsck_mfs for md in /sbin:/usr/sbin: No such file or directory
/dev/ad8s1f: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s1f: clean, 214294022 free (173430 frags, 26765074 blocks, 0.1% 
fragmentation)
/dev/mirror/gm0s1d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0s1d: clean, 16121593 free (1441 frags, 2015019 blocks, 
0.0% fragmentation)
/dev/mirror/gm0s2d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0s2d: clean, 63140067 free (4187 frags, 7891985 blocks, 
0.0% fragmentation)
/dev/ad8s1e: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s1e: clean, 8049657 free (1169 frags, 1006061 blocks, 0.0% 
fragmentation)
/dev/mirror/gm0s3d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0s3d: clean, 84638779 free (1779 frags, 10579625 blocks, 
0.0% fragmentation)
/dev/ad8s1d: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad8s1d: clean, 6625471 free (47 frags, 828178 blocks, 0.0% 
fragmentation)
THE FOLLOWING FILE SYSTEM HAD AN UNEXPECTED INCONSISTENCY:
        mfs: md (/tmp)
Unknown error; help!
NEnter full pathname of shell or RETURN for /bin/sh:


The problem is, I'm sure, is essentially identical to that described in,

http://www.mail-archive.com/freebsd-current@freebsd.org/msg21675.html

namely that the entry for the memory filesystem, /tmp, in /etc/fstab is 
confusing fsck.  My /etc/fstab looks like,

# cat /etc/fstab
# Device                Mountpoint      FStype  Options         Dump    
Pass#
/dev/ad8s1b             none            swap    sw              0       0
/dev/ad8s1a             /               ufs     rw              1       1
md                      /tmp            mfs     rw,-s64m                
2      2
/dev/ad8s1f             /usr            ufs     rw              2       2
/dev/ad8s1e             /var            ufs     rw              2       2
/dev/ad8s1d             /var/tmp        ufs     rw              3       3
/dev/mirror/gm0s1d      /svn            ufs     rw              2       2
/dev/mirror/gm0s2d      /data           ufs     rw              2       2
/dev/mirror/gm0s3d      /music          ufs     rw              2       2

I can get the system to boot quite happily by carrying on into single 
user mode and exiting, but I still get the same behaviour next reboot.

Does anyone have any suggestions?


Regards,

Chris