task_partition & lvm ; FAI 4.0~beta2 exp36

[Mathieu Alorent]

Hello all !

We're testing FAI 4.0~beta2 exp36 and we found something annoying... I
can't tell if it's really a bug or not...

The error message is :

[...]
Executing: mkfs.ext3  /dev/sda8
Executing: parted -s /dev/sda set 9 lvm on
Executing: pvcreate  /dev/sda9
Command had non-zero exit code
Error in task partition. Traceback: task_error task_partition task task_install task task_action task main

This happens when :
1) a server is installed with a class A (containing LVM partitions)
2) the same server is reinstalled with the same class A, but we've
"reset" the hardware raid.

>From what I understand, "reset" the raid, just reinitialize RAID flags
on the disk, and destroy MBR.
Then when reinstalling the same class, parts are created exactly where
they where, and when the lvm flag is set to 'on', LVM find olds LVM conf
and restore "LVs" that were existing before. So the following pvcreate
can't create an existing LV and exit with non-zero.

Note that if the MBR isn't erased, setup-storage find existing PV/VG/LV
and clean them before creating new partitions.

Step to reproduce:
1) install class A
2) and the end of the install : Alt + F2
3) dd if=/dev/zero of=/dev/<your_disk> ibs=512 count=1
4) install class A again.


As a workaround, we have to relaunch install (MBR exists, so lvm parts
are removed) or remove existing PV/VG/LV before recreate RAID (or eraze
MBR).

Do you think this a bug or not ? And can it be corrected ?

Regards
Mathieu

-------------- next part --------------
disk_config disk1 bootable:1
primary	/boot		100	ext3	rw
primary	swap		1G	swap	sw
primary	/		1G	ext3	rw,errors=remount-ro
logical	/usr		1500	ext3	rw
logical	/var		1G	ext3	rw
logical	/home		512	ext3	rw
logical	/tmp		1G	ext3	rw
logical	-		4G-	-	-

disk_config lvm
vg TEST		disk1.9
TEST-PART1	/part1	1G	ext4	rw
TEST-PART2	/part2	1G	ext4	rw
TEST-PART3	/part3	1G	ext4	rw