[linux-lvm] vgscan fails to find volume groups
Heinz J . Mauelshagen
mauelshagen at sistina.com
Wed Apr 17 10:50:02 UTC 2002
Jason,
can you access /dev/sdb while running the below part of your startup script?
IOW: is the Adaptec driver present then and does it work properly?
Regards,
Heinz -- The LVM Guy --
On Wed, Apr 17, 2002 at 03:53:02AM -0400, Jason A. Fager wrote:
> I have been attempting to get LVM set up on a freshly-installed
> Slackware 8.0 system (custom 2.4.18 monolithic kernel, LVM 1.0.3,
> no kernel patches). It works fine in multi-user mode, it works
> fine in single-user mode, however I set up the single-user init
> script like this:
>
> (/ is mounted read only at this point)
> mount -o remount,rw /
> vgscan
> vgchange -a y
> mount -o remount,ro /
> (stock Slackware fsck and mount bits)
>
> The only volume group I have contains one physical volume
> (/dev/sdb, on an Adaptec 7xxx controller). For some reason,
> vgscan doesn't pick up the volume group. The exit code is 0,
> and looking at the debug output it hits /dev/sdb and spits out
> the same messages as when it hits all the other devices.
>
> As an experiment I put a call to sulogin before the vgscan and
> tried running it by hand; same thing happened. I tried running
> pvcreate (on the whole disk, and after creating an LVM partition
> /dev/sdb1) and it failed with error code 7.
>
> As another experiment, I tried setting up a loopback filesystem
> on a file in the root directory. That worked perfectly; vgscan
> picked it up, vgchange activated it, and the rest of the init
> script ran fsck and mounted it. Other than setting up the
> loopback file the only thing I did was add a call to losetup
> before the vgscan.
>
> Not sure if this is a problem with the kernel (i.e. SCSI driver)
> or a problem with LVM, or some boneheaded thing I'm doing wrong.
> Any advice you can give would be appreciated -- let me know if
> I can provide more information.
>
> thanks,
> jafager
>
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*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
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Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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