file system busy ... how?

From: Marc G. Fournier (scrappy_at_hub.org)
Date: 01/28/04

  • Next message: Pranas: "/usr/ports/math/libgmp4 port broken on FreeBSD" 
    Date: Wed, 28 Jan 2004 09:44:38 -0400 (AST)
To: freebsd-stable@freebsd.org

    Trying to umount a file system, and I get:

    umount /vm
    umount: unmount of /vm failed: Device busy

    using lsof, I find nothing open on the file system:

    pluto# lsof | grep vm
    lsof 6548 root txt VREG 13,131077 19308 157977 /usr/lib/libkvm.so.2
    upclient 39379 root txt VREG 13,131077 19308 157977 /usr/lib/libkvm.so.2

    I'm the only one logged into the machine, and I'm in on / ...

    and process wise, the machine is silent:

    pluto# ps aux
    USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
    root 6583 0.0 0.0 412 212 p0 R+ 9:47AM 0:00.00 ps aux
    root 0 0.0 0.0 0 0 ?? DLs 12Dec03 0:00.00 (swapper)
    root 1 0.0 0.0 552 72 ?? ILs 12Dec03 0:44.06 /sbin/init --
    root 2 0.0 0.0 0 0 ?? DL 12Dec03 5:18.27 (pagedaemon)
    root 3 0.0 0.0 0 0 ?? DL 12Dec03 0:00.00 (vmdaemon)
    root 4 0.0 0.0 0 0 ?? DL 12Dec03 1:12.52 (bufdaemon)
    root 5 0.0 0.0 0 0 ?? DL 12Dec03 3:33.09 (vnlru)
    root 6 0.0 0.0 0 0 ?? DL 12Dec03 723:54.36 (syncer)
    root 27 0.0 0.0 212 8 ?? Is 12Dec03 0:00.00 adjkerntz -i
    root 194 0.0 0.0 988 464 ?? Ss 12Dec03 4:34.56 /usr/sbin/syslogd -ss
    daemon 200 0.0 0.0 1004 548 ?? Is 12Dec03 1:18.07 /usr/sbin/portmap
    daemon 213 0.0 0.0 908 420 ?? Ss 12Dec03 7:46.83 rwhod
    root 219 0.0 0.0 1024 564 ?? Is 12Dec03 0:45.08 /usr/sbin/cron
    root 221 0.0 0.0 2592 1292 ?? Is 12Dec03 1:52.64 /usr/sbin/sshd
    root 13845 0.0 0.0 952 368 v0 Is+ 12Dec03 0:00.01 /usr/libexec/getty Pc ttyv0
    root 13846 0.0 0.0 952 368 v1 Is+ 12Dec03 0:00.01 /usr/libexec/getty Pc ttyv1
    root 39379 0.0 0.0 1980 724 ?? S 4Jan04 0:12.32 /usr/local/sbin/upclient
    root 48194 0.0 0.1 4200 3696 ?? Ss 5:59AM 0:23.28 /usr/sbin/named
    root 6200 0.0 0.0 1024 668 ?? I 9:30AM 0:00.00 cron: running job (cron)
    ipaudit 6215 0.0 0.0 636 496 ?? I 9:30AM 0:00.00 /bin/sh cron/cron30min
    ipaudit 6216 0.0 0.0 636 496 ?? I 9:30AM 0:00.00 /bin/sh cron/cron30min
    root 6217 0.0 0.2 6908 6536 ?? S 9:30AM 0:00.90 /usr/local/ipaudit/bin/ipaudit -g /usr/local/ipaudit/ipaudit-we
    root 6563 0.0 0.0 5292 1728 ?? S 9:46AM 0:00.03 sshd: root@ttyp0 (sshd)
    root 6565 0.0 0.0 1264 852 p0 Ss 9:46AM 0:00.02 -csh (csh)
    ipaudit 6202 0.0 0.0 0 0 ?? Z 9:30AM 0:00.00 (sh)

    So why won't it let me umount the drive? :(

    Thanks ... 

    ----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: scrappy@hub.org           Yahoo!: yscrappy              ICQ: 7615664
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