Date: Sun, 09 Apr 2000 10:52:24 -0700 From: tomb <tomb@cgf.net> To: freebsd-questions@freebsd.org Subject: Re: vinum causes fatal double fault kernel panic Message-ID: <38F0C358.D120908@cgf.net> References: <38F0359F.E45937FC@cgf.net>
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Additional:
So I decided to reformat the drives using the scsi adaptors format utility
(which completed with success). I modified the vinum config file to the
following:
drive a device /dev/da0s1
drive b device /dev/da1s1
volume mirror
plex org concat
sd length 4141m drive a
plex org concat
sd length 4141m drive b
Now I start vinum with the following command....
su-2.03# vinum create config
1: drive a device /dev/da0s1
** 1 : Invalid argument
2: drive b device /dev/da1s1
** 2 : Invalid argument
0 drives:
1 volumes:
V mirror State: down Plexes: 2 Size: 4141 MB
2 plexes:
P mirror.p0 C State: faulty Subdisks: 1 Size: 4141 MB
P mirror.p1 C State: faulty Subdisks: 1 Size: 4141 MB
2 subdisks:
S mirror.p0.s0 State: crashed PO: 0 B Size: 4141 MB
S mirror.p1.s0 State: crashed PO: 0 B Size: 4141 MB
And seeing the fault "State: crashed" I get do a verbose info and get
.............
su-2.03# vinum list -r -V mirror
Volume mirror: Size: 4342153216 bytes (4141 MB)
State: down
Flags:
2 plexes
Read policy: round robin
Plex 0: mirror.p0 (concat), 4141 MB
Plex 1: mirror.p1 (concat), 4141 MB
Plex mirror.p0: Size: 4342153216 bytes (4141 MB)
Subdisks: 1
State: faulty
Organization: concat
Part of volume mirror
Subdisk 0: mirror.p0.s0
state: crashed size 4342153216 (4141 MB)
offset 0 (0x0)
Plex mirror.p1: Size: 4342153216 bytes (4141 MB)
Subdisks: 1
State: faulty
Organization: concat
Part of volume mirror
Subdisk 0: mirror.p1.s0
state: crashed size 4342153216 (4141 MB)
offset 0 (0x0)
Subdisk mirror.p0.s0:
Size: 4342153216 bytes (4141 MB)
State: crashed
Plex mirror.p0 at offset 0 (0 B)
Drive a (/dev/da0s1), no offset
Subdisk mirror.p1.s0:
Size: 4342153216 bytes (4141 MB)
State: crashed
Plex mirror.p1 at offset 0 (0 B)
Drive b (/dev/da1s1), no offset
tomb wrote:
> Hi,
> I've been attempting to create a mirrored pair of disc's. I'm not
> concerned about performance only the backup of my critical data. Armed
> with a pair of scsi drives (same model) and the man pages I came up with
> a config file (listed below). The problem is that if I use this to
> setup the mirro I get a
> "fatal double fault" <<cut>> panic: double fault
> message and the machine reboots.
>
> Camcontrol reports both drives ready and the discs were operating fine
> as separate drives on the same machine and controller.
>
> Thanks,
>
> Tom
>
> Platform:
>
> FreeBSD 4.0 Release,
> AMD K6-2
> 128Mb RAM
> Custom Kernel (Removed spurious devices)
> Adaptec 2940-U2W
>
> Drives:
> ad0 (OS drive, not to be mirrored!)
> da0 ID1 (Seagate 4141Mb Barracuda mirror)
> da1 ID8 (Seagate 4141Mb Barracuda mirror)
>
> vinum config file:
>
> drive a device /dev/da0s1e
> drive b device /dev/da1s1e
> volume mirror
> plex org concat
> sd length 4141m drive a
> plex org concat
> sd length 4141m drive b
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