random st_birthtime

[Andy Christianson]

Hello,

 

I am running FreeBSD 7.0-RELEASE AMD64 on a dual dual-core xeon system,
and I am having an odd problem with non-UFS filesystems. Any mounted
filesystem that is not UFS will return a random, negative st_birthtime.
Also, each time I stat the file I get a different value.

 

The two mounted filesystems with this problem are ext2fs and smbfs.

 

Here's my output from uname -a:

[root at zeta /mnt/autoboxes/achristianson]# uname -a

FreeBSD zeta.orases.com 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24
10:35:36 UTC 2008
root at driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

 

Here is some example ls -lU output:

 

 

[root at zeta /mnt/autoboxes/achristianson]# ls -lU

total 15750

drwxrwxrwx  1 www  www     16384 Dec 26  1929 boonshaft

-rwxrwxrwx  1 www  www  15964062 Dec 26  1929 cachegrind.out.17937

drwxrwxrwx  1 www  www     16384 Dec 26  1929 catgenie

drwxrwxrwx  1 www  www     16384 Dec 26  1929 cedarbrook

drwxrwxrwx  1 www  www     16384 Dec 26  1929 gams

drwxrwxrwx  1 www  www     16384 Dec 26  1929 gamsreview

drwxrwxrwx  1 www  www     16384 Dec 26  1929 gamsspec

-rwxrwxrwx  1 www  www         0 Dec 26  1929 jesus

drwxrwxrwx  1 www  www     16384 Dec 26  1929 lib24watch

-rwxrwxrwx  1 www  www         0 Dec 26  1929 newfile

drwxrwxrwx  1 www  www     16384 Dec 26  1929 test

-rwxrwxrwx  1 www  www        78 Dec 26  1929 testfile

-rwxrwxrwx  1 www  www        78 Dec 26  1929 testfile~

drwxrwxrwx  1 www  www     16384 Dec 26  1929 usaf2008-impl

drwxrwxrwx  1 www  www     16384 Dec 26  1929 yff

[root at zeta /mnt/autoboxes/achristianson]# ls -lU

total 15750

drwxrwxrwx  1 www  www     16384 Jan 14  1930 boonshaft

-rwxrwxrwx  1 www  www  15964062 Jan 14  1930 cachegrind.out.17937

drwxrwxrwx  1 www  www     16384 Jan 14  1930 catgenie

drwxrwxrwx  1 www  www     16384 Jan 14  1930 cedarbrook

drwxrwxrwx  1 www  www     16384 Jan 14  1930 gams

drwxrwxrwx  1 www  www     16384 Jan 14  1930 gamsreview

drwxrwxrwx  1 www  www     16384 Jan 14  1930 gamsspec

-rwxrwxrwx  1 www  www         0 Jan 14  1930 jesus

drwxrwxrwx  1 www  www     16384 Jan 14  1930 lib24watch

-rwxrwxrwx  1 www  www         0 Jan 14  1930 newfile

drwxrwxrwx  1 www  www     16384 Jan 14  1930 test

-rwxrwxrwx  1 www  www        78 Jan 14  1930 testfile

-rwxrwxrwx  1 www  www        78 Jan 14  1930 testfile~

drwxrwxrwx  1 www  www     16384 Jan 14  1930 usaf2008-impl

drwxrwxrwx  1 www  www     16384 Jan 14  1930 yff

 

Here's some output from mount, so that you can see how things are
mounted. Note that the problem occurs with or without the noatime
option:

 

[root at zeta /mnt/autoboxes/achristianson]# mount

/dev/mfid0s1a on / (ufs, local, noatime)

devfs on /dev (devfs, local)

/dev/mfid0s1e on /tmp (ufs, local, noatime, soft-updates)

/dev/mfid0s1f on /usr (ufs, local, noatime, soft-updates)

/dev/mfid0s1d on /var (ufs, local, soft-updates)

/dev/da0s1 on /mnt/usb (ext2fs, local, noatime)

//SVN at CHEWBACCA/SANDBOX on /mnt/autoboxes/rpeters (smbfs, noatime)

//SVN at GREEDO/SANDBOX on /mnt/autoboxes/koboyle (smbfs, noatime)

//SVN at VADER/SANDBOX on /mnt/autoboxes/mloss (smbfs, noatime)

//SVN at MACMINI/SANDBOX on /mnt/autoboxes/macmini (smbfs, noatime)

//SVN at R2D2/SANDBOX on /mnt/autoboxes/achristianson (smbfs, noatime)

//SVN at BOBAFETT/SANDBOX on /mnt/autoboxes/rgriffin (smbfs, noatime)

//SVN at YODA/SANDBOX on /mnt/autoboxes/vpolyanov (smbfs, noatime)

//SVN at DARTHMAUL/SANDBOX on /mnt/autoboxes/dmercer (smbfs, noatime)

//ADMINISTRATOR at TITAN/BACKUP on /mnt/backup (smbfs, noatime)

//SVN at JANGOFETT/SANDBOX on /mnt/autoboxes/mtomasello (smbfs, noatime)

//SVN at GRIEVOUS/SANDBOX on /mnt/autoboxes/atalabac (smbfs, noatime)

 

I do not think this is an SMBFS problem, because it happens exactly the
same on /dev/da0s1 (ext2fs).

 

Any ideas? Thanks in advance for any help!