lvm question... cannot mount

[soleblazer]

Hi , hopefully someone can help.

I had a disk that was on a suse 7.3 machine, it had several volumes unders a vg named system, the dev files were /dev/system/www, /dev/system/home and so forth.

That machine took a major dive.

I put the drive into a RedHat 9 system. The lvm on the machine recognizes the volume fine., correct sizes, etc.

I am having a hell of a time mounting them though

I ran vgmakenode and it created the /dev/system tree for me, but when I try and mount

mount /dev/system/www /suse/www

I get this error:

/dev/system/www is not a valid block device...

Anyone know what I need to do to get this to work? the volumes were not stiped or anything, all of it was on this one drive.

[bwkaz]

Does the RedHat kernel have support for LVM built-in? If not, you'll need to load the relevant modules (and I don't know what they are...) or first build, then load the relevant modules.

Just because you have a device node set up somewhere under /dev doesn't mean the kernel knows how to service requests on that device node. The error you're getting, in fact, indicates that it most likely doesn't.

[soleblazer]

Yeah, lvm support has been in RH out of the box since 8.

What I forgot to do was run the vgchange command to enable the volumes again, i guess they were put in a degraded state when I moved the drive to the new PC running RH.

I am up and running with zero issues now..lvm is sweet.

[posterboy]

Yes, it is, and have you noticed, it is no longer necessary to do a vgexport and vgimport? I do wonder how they got around that?