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Re: [linux-lvm] LVM and Network Block Device (problem sollution)



  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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