[Summary] puzzle with cold mirror script
From: Chris Hoogendyk (choogend_at_library.umass.edu)
Date: 06/21/04
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Date: Mon, 21 Jun 2004 13:43:17 -0400 To: Sun Managers <sunmanagers@sunmanagers.org>
Bingo to Casper *** and Dan Astoorian. Also thanks to Darren Dunham.
/etc/vfstab was messed up. Both Casper and Dan suggested this, and Dan
hit it exactly with his example. His message is after my sig. My
original message after that.
Thank you very much.
---------------
Chris Hoogendyk
-
O__ ---- Network Specialist & Unix Systems Administrator
c/ /'_ --- Library Information Systems & Technology Services
(*) \(*) -- W.E.B. Du Bois Library
~~~~~~~~~~ - University of Massachusetts, Amherst
<choogend@library.umass.edu>
---------------
-----------------------------------
-------- Original Answer --------
-----------------------------------
Subject: Re: puzzle with cold mirror script
Date: Mon, 21 Jun 2004 13:14:26 -0400
From: Dan Astoorian <djast@cs.toronto.edu>
To: Chris Hoogendyk <choogend@library.umass.edu>
Check your /etc/vfstab file very carefully: I suspect you may find that
the line for / looks something like
/dev/dsk/c0t8d0s0 /dev/rdsk/c0t0d0s0 / ufs #[...]
^
instead of
/dev/dsk/c0t8d0s0 /dev/rdsk/c0t8d0s0 / ufs #[...]
^
When certain filesystem tools are given a block device (/dev/dsk/*),
they consult /etc/vfstab to find out the name of the corresponding raw
device (/dev/rdsk/*).
If this is in fact your problem, then note that ufsdump uses a similar
algorithm: any backups you've made could be of the wrong device.
Good luck,
--
Dan Astoorian People shouldn't think that it's better to have
Sysadmin, CSLab loved and lost than never loved at all. It's
djast@cs.toronto.edu not, it's better to have loved and won. All
www.cs.toronto.edu/~djast/ the other options really suck. --Dan Redican
-----------------------------------
-------- Original Question --------
-----------------------------------
Subject: puzzle with cold mirror script
Date: Mon, 21 Jun 2004 12:56:07 -0400
From: Chris Hoogendyk <choogend@library.umass.edu>
To: Sun Managers <sunmanagers@sunmanagers.org>
Either this is really weird or I'm just blanking out and missing
something obvious. This is the mirror script from BigAdmin modified just
a bit so that it works for me.
I first set it up on a netra t1 that runs my proxy server. Worked.
Then I set it up on an E250 that is my web server. Worked.
Then I set it up on an E250 that is my failover. It tried to newfs my
root boot drive. I killed it (I Was running it manually to test before
putting it on cron). I cannot see why it would do what it did, unless
there is some weird residual from once having done a disksuite mirror.
Currently, if I do a metastat or metadb, I get: "there are no existing
databases". Ok. cool. go ahead with cold mirror script.
After setting it up, I ran it manually and got:
/export/home/.backup/bin# ls -l
total 6
-rw-r--r-- 1 root other 632 Jun 21 11:43 crontab
-rwx------ 1 root other 1766 Jun 21 11:36 mirror
/export/home/.backup/bin# ./mirror
====================================
Disk Copy script started Mon Jun 21 11:46:27 EDT 2004
fmthard: New volume table of contents now in place.
newfs: /dev/rdsk/c0t0d0s0 last mounted as /
newfs: construct a new file system /dev/rdsk/c0t0d0s0: (y/n)? n
mount: /dev/dsk/c0t8d0s0 is not this fstype.
DUMP: Writing 32 Kilobyte records
DUMP: Date of this level 0 dump: Mon Jun 21 11:47:02 2004
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/rdsk/c0t0d0s0 (pollux:/) to standard output.
DUMP: Mapping (Pass I) [regular files]
DUMP: Mapping (Pass II) [directories]
DUMP: Estimated 1484034 blocks (724.63MB).
DUMP: Dumping (Pass III) [directories]
^C DUMP: Interrupt received.
DUMP: NEEDS ATTENTION: Do you want to abort dump?: ("yes" or "no")
ufsrestore interrupted, continue? [yn] y
DUMP: "yes" or "no"?
DUMP: NEEDS ATTENTION: Do you want to abort dump?: ("yes" or "no") yes
DUMP: The ENTIRE dump is aborted.
cannot find directory inode 4
abort? [yn] y
dump core? [yn] y
Abort - core dumped
Note that the newfs refers to c0t0d0, which is supposed to be SRC. But
in the script, it clearly says DEST in the newfs line. The mount
properly lists c0t8d0, which is DEST, and the ufsdump says it is dumping
c0t0d0, which is correctly SRC.
Why would the script get confused like this? I just can't see how it is
possible. Seems like a human sort of thing. I didn't even edit those
lines, because the E250 I copied it from was configured identically, and
on that computer it worked.
Anyway, all the disk information and a listing of the script follows.
Any ideas at all would be appreciated, inluding "you idiot, you have a
typo in line 15!" (if that's true) ;-)
TIA
---------------
Chris Hoogendyk
-
O__ ---- Network Specialist & Unix Systems Administrator
c/ /'_ --- Library Information Systems & Technology Services
(*) \(*) -- W.E.B. Du Bois Library
~~~~~~~~~~ - University of Massachusetts, Amherst
<choogend@library.umass.edu>
---------------
/export/home/chris# metadb
metadb: pollux: there are no existing databases
/export/home/chris# df -k
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t0d0s0 2053605 712802 1279195 36% /
/proc 0 0 0 0% /proc
fd 0 0 0 0% /dev/fd
mnttab 0 0 0 0% /etc/mnttab
/dev/dsk/c0t0d0s4 1016122 684000 271155 72% /var
swap 2083416 16 2083400 1% /var/run
swap 2084184 784 2083400 1% /tmp
/dev/dsk/c0t0d0s5 1016122 252174 702981 27% /opt
/dev/dsk/c0t0d0s7 10234046 6223132 3908574 62% /export/home
/dev/dsk/c0t0d0s3 18580778 11102624 7292347 61% /usr/local
/dev/dsk/c0t0d0s6 1016122 324929 630226 35% /usr/openwin
/export/home/chris# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@0,0
1. c0t8d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@8,0
2. c0t9d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@9,0
Specify disk (enter its number): 1
selecting c0t8d0
[disk formatted]
format> verify
Primary label contents:
Volume name = < >
ascii name = <SUN36G cyl 24620 alt 2 hd 27 sec 107>
pcyl = 24622
ncyl = 24620
acyl = 2
nhead = 27
nsect = 107
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 1451 2.00GB (1452/0/0) 4194828
1 swap wm 1452 - 2177 1.00GB (726/0/0) 2097414
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 usr wm 2178 - 15244 18.00GB (13067/0/0) 37750563
4 var wm 15245 - 15970 1.00GB (726/0/0) 2097414
5 unassigned wm 15971 - 16696 1.00GB (726/0/0) 2097414
6 usr wm 16697 - 17422 1.00GB (726/0/0) 2097414
7 home wm 17423 - 24619 9.91GB (7197/0/0) 20792133
format> disk
AVAILABLE DISK SELECTIONS:
0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@0,0
1. c0t8d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@8,0
2. c0t9d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@9,0
Specify disk (enter its number)[1]: 0
selecting c0t0d0
[disk formatted]
Warning: Current Disk has mounted partitions.
format> verify
Primary label contents:
Volume name = < >
ascii name = <SUN36G cyl 24620 alt 2 hd 27 sec 107>
pcyl = 24622
ncyl = 24620
acyl = 2
nhead = 27
nsect = 107
Part Tag Flag Cylinders Size Blocks
0 root wm 726 - 2177 2.00GB (1452/0/0) 4194828
1 swap wu 0 - 725 1.00GB (726/0/0) 2097414
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 usr wm 2178 - 15244 18.00GB (13067/0/0) 37750563
4 var wm 15245 - 15970 1.00GB (726/0/0) 2097414
5 unassigned wm 15971 - 16696 1.00GB (726/0/0) 2097414
6 usr wm 16697 - 17422 1.00GB (726/0/0) 2097414
7 home wm 17423 - 24619 9.91GB (7197/0/0) 20792133
/export/home/chris# more mirror
#!/bin/sh
# Original Script written by Constantin Ionescu
# Modified by Carlo Cosolo
# Modified by Peter Baer Galvin
# Modified by John West
# Use and distribute freely
# acquired from Sun BigAdmin June 2004, cgh
# fixed and adapted to our systems June 2004, cgh
# Define variables for use in the script
# ! Important, these must be set correctly !
# The root disk to duplicate (leave off slice numbers and path)
SRC=c0t0d0
# The empty disk to duplicate it to (leave off slice numbers and path)
DEST=c0t8d0
# The directory to mount destination partitions on while duplicating
MOUNTDIR=/mirror
# file name for this script, to rename it on $DEST and avoid execution
SCRIPT=/.backup/bin/mirror
# The slices that should be copied
SLICES="s0 s3 s4 s5 s6 s7"
echo ====================================
echo Disk Copy script started `date`
echo
# Make sure the mount point for duplicate partitions exists
if [ ! -d $MOUNTDIR ]; then
mkdir $MOUNTDIR
chmod 700 $MOUNTDIR
fi
# Partition the duplicate disk, make filesystems, make it bootable
prtvtoc /dev/rdsk/${SRC}s2 > /tmp/vtoc
fmthard -s /tmp/vtoc /dev/rdsk/${DEST}s2
installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/${DEST}s0
rm /tmp/vtoc
# Modify the following loop to handle any special cases
for fs in $SLICES
do
newfs /dev/dsk/${DEST}${fs};
# newfs /dev/dsk/${DEST}${fs} < /dev/null;
mount /dev/dsk/${DEST}${fs} ${MOUNTDIR};
ufsdump 0f - /dev/dsk/${SRC}${fs} | (cd ${MOUNTDIR}; ufsrestore rf -);
if [ $fs = "s0" ]; then
sed "s/${SRC}/${DEST}/g" /etc/vfstab > ${MOUNTDIR}/etc/vfstab;
fi
if [ $fs = "s7" ]; then
mv ${MOUNTDIR}${SCRIPT} ${MOUNTDIR}${SCRIPT}.DONTRUN;
fi
umount ${MOUNTDIR}
done
cp /dev/null /export/home/.backup/mirror-timestamp
echo
echo Disk Copy script ended `date`
echo ====================================
echo
/export/home/chris#
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--
---------------
Chris Hoogendyk
-
O__ ---- Network Specialist & Unix Systems Administrator
c/ /'_ --- Library Information Systems & Technology Services
(*) \(*) -- W.E.B. Du Bois Library
~~~~~~~~~~ - University of Massachusetts, Amherst
<choogend@library.umass.edu>
---------------
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- Previous message: Skip Hammack: "Re: Redundant power supplies aren't (follow-up)"
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