[Samba] /var full issue: FreeBSD 5.4, Samba 3

[Tom Wolfe]

I encountered something a little strange today.

Previously I had enabled samba logging and forgot to disable it. Unsurprisingly my /var partition maxed out. To correct this, I disabled the logging and deleted the (approx 240 MB) samba log file. Strangely I still had a full /var partition. Running df gave me:

SRV04# df
Filesystem  1K-blocks     Used     Avail Capacity  Mounted on
/dev/ad4s1a    253678    55830    177554    24%    /
devfs               1        1         0   100%    /dev
/dev/ad4s1e    253678       16    233368     0%    /tmp
/dev/ad4s1f 235212398 46345500 170049908    21%    /usr
/dev/ad4s1d    253678   225076      8308    96%    /var

I ran du -hc on /var which gave me the following result:

SRV04# du -hc
...
[blah blah blah]
...
 32M    .
 32M    total

--But since /var is allocated about 250 MB it shouldn't be full....?!

So I ran fsck, which gave the following output:

SRV04# fsck
** /dev/ad4s1a (NO WRITE)
** Last Mounted on /
** Root file system
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
1451 files, 27915 used, 98924 free (500 frags, 12303 blocks, 0.4% fragmentation)
** /dev/ad4s1e (NO WRITE)
** Last Mounted on /tmp
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
22 files, 8 used, 126831 free (31 frags, 15850 blocks, 0.0% fragmentation)
** /dev/ad4s1f (NO WRITE)
** Last Mounted on /usr
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
UNALLOCATED  I=27390995  OWNER=root MODE=100644
SIZE=240 MTIME=May 25 09:27 2005
FILE=/var/db/samba/browse.dat

UNEXPECTED SOFT UPDATE INCONSISTENCY

REMOVE? no

** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
LINK COUNT FILE I=27390977  OWNER=root MODE=0
SIZE=0 MTIME=May 25 09:28 2005  COUNT 0 SHOULD BE -1
ADJUST? no

** Phase 5 - Check Cyl groups
ALLOCATED FILE 27390977 MARKED FREE
ALLOCATED FRAG 109441760 MARKED FREE
BLK(S) MISSING IN BIT MAPS
SALVAGE? no

FREE BLK COUNT(S) WRONG IN SUPERBLK
SALVAGE? no

472769 files, 23166822 used, 94433457 free (26249 frags, 11800901 blocks, 0.0% fragmentation)
** /dev/ad4s1d (NO WRITE)
** Last Mounted on /var
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
FREE BLK COUNT(S) WRONG IN SUPERBLK
SALVAGE? no

125 files, 680 used, 126158 free (174 frags, 15748 blocks, 0.1% fragmentation)

Running df now gives me, as expected:

SRV04# df
Filesystem  1K-blocks     Used     Avail Capacity  Mounted on
/dev/ad4s1a    253678    55830    177554    24%    /
devfs               1        1         0   100%    /dev
/dev/ad4s1e    253678       16    233368     0%    /tmp
/dev/ad4s1f 235212398 46288886 170106522    21%    /usr
/dev/ad4s1d    253678     1398    231986     1%    /var

... so my problem is solved. But the whole thing seems strange. Any ideas what was up?
Running FreeBSD 5.4, Samba 3.

Regards,
Tom Wolfe