unable to use LVM with stripes

[Jean-Yves Moulin <jym%baaz.fr@localhost>]

Hello everybody,

I'm trying to stripe my logical volume accross 4 disks. But once
created, LVM lost one of his physical volume ("Couldn't find device
with uuid 'XXX-xxxx...'").

Does anybody already tried that ?



Here are some info:

* I'm using 4 disks: sd0, sd1, sd2 and sd3. Each disk is 2TB. And each
disk are dedicated to LVM. My system is on another disk. I'm using
6.0_BETA2 from two weeks ago (july, 17).

* disklabel is identical for all disks:

 c: 3905945472       128     unused      0     0
 d: 3905945600         0     unused      0     0

* Then, I launch pvcreate on each raw partitions:

 lvm pvcreate /dev/rsd0d
 lvm pvcreate /dev/rsd1d
 lvm pvcreate /dev/rsd2d
 lvm pvcreate /dev/rsd3d


* I create one volume group (I set PE size to 128M in order to have a
maximum LV size of 8TB):

 lvm vgcreate -s 128M vg00 /dev/rsd0d /dev/rsd1d /dev/rsd2d /dev/rsd3d


* I create one logical volume, stripped accross 4 disks, with a strip
size of 128K:

 lvm lvcreate -i 4 -I 128K -L 1G -n test vg00


* Here, a pvscan is OK:

  # lvm pvscan
  PV /dev/rsd0d   VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV /dev/rsd1d   VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV /dev/rsd2d   VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV /dev/rsd3d   VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  Total: 4 [7.27 TiB] / in use: 4 [7.27 TiB] / in no VG: 0 [0   ]


* Then I create my filesystem:

 newfs /dev/vg00/rtest


* Strangely, LVM has lost his last PV:

  # lvm pvscan
  Couldn't find device with uuid
'd0f3eX-aGgM-jyDn-Zb78-wWkC-B7AC-e8wAMY'.
  Couldn't find device with uuid
'd0f3eX-aGgM-jyDn-Zb78-wWkC-B7AC-e8wAMY'.
  Couldn't find device with uuid
'd0f3eX-aGgM-jyDn-Zb78-wWkC-B7AC-e8wAMY'.
  PV /dev/rsd0d       VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV /dev/rsd1d       VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV /dev/rsd2d       VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  PV unknown device   VG vg00   lvm2 [1.82 TiB / 1.82 TiB free]
  Total: 4 [7.27 TiB] / in use: 4 [7.27 TiB] / in no VG: 0 [0   ]

* And dmesg shows an abnormal log on stripes creation:

Stripe target init function called!!
Stripe target chunk size 256 number of stripes 4
Stripe target device name /dev/sd0d -- offset 384
Stripe target device name /dev/sd1d -- offset 384
Stripe target device name /dev/sd2d -- offset 384
Stripe target device name /dev/sd3d -- offset
M-kM-5UHM^IM-eHM^EM^?u^D1M-@]M-CHM^A?M^@C>M^@uM-sHM^KG^PHM


What am I missing ? Is there another way to proceed ?

If anybody can help, thank you very much.

best,
jym