[linux-lvm] devfs/vgchange error

[linux-lvm] devfs/vgchange error

[Donald W Watson]

I'm using Linux 2.4.10 and lvm 1.0.1-rc4.

Without devfs, perform the following:

1.  Create a physical volume on some LVM partition (e.g., /dev/hda7).
2.  Run pvscan--it shows the physical volume /dev/hda7.
3.  Create a volume group (vg7) using the physical volume created in step
1.  There now exists a device /dev/vg7/group.
4.  Run vgscan--it shows the active volume group vg7.
5.  Run vgchange -an.  The device /dev/vg7/group still exists.
6.  Run vgscan--it shows the inactive volume group vg7.

Rebuild the kernel with devfs and perform the following:

1.  Run pvscan--it shows the physical volume
/dev/ide/host0/bus0/target0/lun0/part7.
2.  Run vgscan--it shows the active volume group vg7.
3.  Run vgchange -an.  The device /dev/vg7/group is gone.
4.  Run vgscan--it seg faults.  In fact, any command that attempts to open
/dev/ide/host0/bus0/target0/lun0/part7 seg faults.

This does not appear to be a conversion problem from non-devfs to devfs; it
happens even if you start with devfs.