Date: Fri, 25 Jan 2002 15:14:37 +0100 (CET) From: Martin Blapp <mb@imp.ch> To: Greg Lehey <grog@FreeBSD.org> Cc: <freebsd-stable@FreeBSD.org> Subject: Re: double fault with vinum and 4.5 RC3 Message-ID: <20020125151124.O58067-100000@levais.imp.ch> In-Reply-To: <20020125131225.E4778@wantadilla.lemis.com>
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Hi Greg,
Does this look reasonable now ? (I Included my workaround for the vinum
double fault panic problem.)
REFERENCE:
SUM = Single user mode
MUM = Multi user mode
If the disk with ID 1 crashes:
------------------------------
1) Reboot
2) Change SCSI ID's. ID1 > ID2, ID2 > ID1
3) Boot up the previous SLAVE disk into SUM
4) Partition da1 the same as da0, set bootblock
5) Copy the disklabel of da0:
$ disklabel /dev/da0c > label.txt
$ disklabel -e /dev/da1c
:r label.txt
:s/da0/da1/g
Save lable
6) $ dd bs=4096k if=/dev/da0a of=/dev/da1a
7) reboot
8) Change SCSI ID's. ID2 > ID1, ID1 > ID2
9) Boot up the previous SLAVE disk into SUM
10) $ disklabel -e /dev/da0c
:s/da1/da0/g
Save lable
11) $ echo "drive vinumdrive0 device /dev/da0e" >> configfile
$ echo "drive vinumdrive2 device /dev/da0f" >> configfile
$ echo "drive vinumdrive4 device /dev/da0g" >> configfile
$ vinum create configfile
12) $ vinum start vinumdrive0
$ vinum start vinumdrive2
$ vinum start vinumdrive4
13) $ vinum stop
14) $ vinum start var.p0.s0
15) $ vinum start docsis.p0.s0
16) $ vinum start docsisvar.p0.s0
17) boot into MUM
18) Ready
If the disk with ID 2 crashes:
------------------------------
1) Cut old disk from powercable
2) $ camcontrol rescan all
3) Replace old disk, set again SCSI ID 2, plug powercable again
4) $ camcontrol rescan all
5) Partition of disk da1, set bootblock
6) Copy the disklabel of da0:
$ disklabel /dev/da0c > label.txt
$ disklabel -e /dev/da1c
:r label.txt
:s/da0/da1/g
Save lable
7) Restore root partition:
$ newfs /dev/da1a
$ mount /dev/da1a /mnt
$ cd /mnt && dump -rf 0 /dev/da0a -f - | restore -xf -
$ rm /mnt/restoresytable
$ umount /mnt
8) $ echo "drive vinumdrive1 device /dev/da1e" >> configfile
$ echo "drive vinumdrive3 device /dev/da1f" >> configfile
$ echo "drive vinumdrive5 device /dev/da1g" >> configfile
$ vinum create configfile
9) $ vinum start vinumdrive1
$ vinum start vinumdrive3
$ vinum start vinumdrive5
10) $ boot into SUM ($ init 1)
$ unmount all vinum devices
$ vinum stop
$ vinum start
$ vinum start var.p1.s1
$ vinum start docsis.p1.s1
$ vinum start docsisvar.p1.s1
11) boot into MUM
12) Ready
Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org>
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