Date: Mon, 25 Mar 2002 13:08:04 +0300 From: "Victor Polyakov" <victor@tvcom.ru> To: <freebsd-hackers@freebsd.org> Subject: jail + mount_union problem Message-ID: <002601c1d3e4$f448cae0$6b40f650@niokr2>
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We have a system with some jails. First jail's home directory is /data/jails/ref. Then, we are running script "crash" under root:
-----------
#! /usr/local/bin/bash
SRC=/data/jails/ref
DEST=/data/jails/$1
mkdir $DEST
mkdir $DEST/usr
mount_union -b $SRC/usr $DEST/usr
mkdir $DEST/bin
mount_union -b $SRC/bin $DEST/bin
mkdir $DEST/root
mount_union -b $SRC/root $DEST/root
jail /data/jails/$1 jail$1 $2 /bin/csh /root/scripts/runjail
mount_union -b $SRC/usr $DEST/usr
mount_union -b $SRC/bin $DEST/bin
mount_union -b $SRC/root $DEST/root
--------------
Originally, this script was designed to make a clone of the first jail. Contents of /root/scripts/runjail:
-------------
sshd
/usr/local/apache/bin/apachectl start
cd /usr/local/mysql
bin/safe_mysqld --user=mysql &
cron
-------------
After this, system hangs up. When trying to reboot with "boot -sv" we see:
...
...
trying /sbin/init...
and freebsd halts again. There is no way to boot up. Of course, fsck reports "no problem" and checksum of /sbin/init is correct. The only way to continue working is to run "upgrade" from the instalation CD.
We are using freebsd 4.5.
May be anybody knows solution for this problem?
Victor Polyakov (victor@tvcom.ru)
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<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> We have a system with some
jails. First jail's home directory is /data/jails/ref. Then, we are running
script "crash" under root:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-----------</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>#! /usr/local/bin/bash</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>SRC=/data/jails/ref<BR>DEST=/data/jails/$1<BR></FONT><FONT face=Arial
size=2></FONT></DIV>
<DIV><FONT face=Arial size=2>mkdir $DEST</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mkdir $DEST/usr<BR>mount_union -b $SRC/usr
$DEST/usr</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mkdir $DEST/bin<BR>mount_union -b $SRC/bin
$DEST/bin</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mkdir $DEST/root<BR>mount_union -b $SRC/root
$DEST/root</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>jail /data/jails/$1 jail$1 $2 /bin/csh
/root/scripts/runjail</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mount_union -b $SRC/usr $DEST/usr</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mount_union -b $SRC/bin $DEST/bin</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>mount_union -b $SRC/root
$DEST/root<BR></FONT></DIV>
<DIV><FONT face=Arial size=2>--------------</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Originally, this script was designed to make a
clone of the first jail. Contents of /root/scripts/runjail:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-------------</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>sshd<BR>/usr/local/apache/bin/apachectl start<BR>cd
/usr/local/mysql<BR>bin/safe_mysqld --user=mysql &<BR>cron</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-------------</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>After this, system hangs up. When trying to reboot
with "boot -sv" we see:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>...</FONT></DIV>
<DIV><FONT face=Arial size=2>...</FONT></DIV>
<DIV><FONT face=Arial size=2>trying /sbin/init...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>and freebsd halts again. There is no way to boot
up. Of course, fsck reports "no problem" and checksum of /sbin/init is
correct. The only way to continue working is to run
"upgrade" from the instalation CD.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>We are using freebsd 4.5.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>May be anybody knows solution for this
problem?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Victor Polyakov (<A
href="mailto:victor@tvcom.ru">victor@tvcom.ru</A>)</DIV></FONT>
<DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>
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