[linux-lvm] LVM and Network Block Device (problem sollution)
Spam
spam at tnonline.net
Fri Oct 31 23:28:01 UTC 2003
The sollution to the problem was simple. The lvm tools are hardcoded
(from lvm_dir_cache.c) to only look for specific directories when
scaning for lvm disks. For network block devices lvm looks only in
/dev/nb/*, while my Gentoo kernel created /dev/nbd/*.
A simple fix was to make a link /dev/nb->/dev/nbd and it worked. I
did not find anything about this in the howto or man-pages.
//Anders
> Hello,
> How can I make lvm to recognize my network block devices? They are
> listed in /dev/nbd/* and I can access them fine with fdisk or dd.
> But when I try pvdisplay /dev/nbd/0 I get the following error:
> pvdisplay - ERROR "pv_read(): pv_create_name_from_kdev_t" no VALID
> physical volume "/dev/nbd/0"
> I get no errors in the logs either so I am not sure where to start.
> From what I see lvmdiskscan etc looks in /proc/partitions and never
> scans /dev/ for valid blockdevices?
> Thanks for any input,
> Anders
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