[linux-lvm] unable to lvcreate _new_ LVs on existing VG with existing LVs and plenty of room?

[lyndat3 at your-mail.com]

Hi,

I'm unable to create a new LV on an existing VG with LVs.

I'm on

	uname -rm
		3.19.3-1.gf10e7fc-default x86_64

	lvm version
		LVM version:     2.02.98(2) (2012-10-15)
		Library version: 1.03.01 (2011-10-15)
		Driver version:  4.29.0

I have a VG with lots ov available space

	vgs
		VG      #PV #LV #SN Attr   VSize   VFree
		VG0       1   7   0 wz--n- 930.19g 855.19g

It's already got LVs on it

	lvs
		LV             VG      Attr      LSize  Pool Origin Data%  Move Log Cpy%Sync Convert
		LV_ROOT        VG0     -wi-ao--- 20.00g
		LV_HOME        VG0     -wi-ao--- 40.00g
		LV_SWAP        VG0     -wi-ao---  2.00g
		...

Time's passed.  Now, when I attempt to create a new LV on the VG, if fails with

	lvcreate -L 30G   -n LV_TEST   /dev/VG0
		/dev/md1: lseek 18446744071795900416 failed: Invalid argument

and in syslog I see

	Apr 07 21:34:21 xen01 kernel:  md1: unknown partition table

The VG's on a RAID1 array.

	pvs
		PV         VG      Fmt  Attr PSize   PFree
		/dev/md1   VG0     lvm2 a--  930.19g 855.19g

	cat /proc/mdstat
		...
		md1 : active raid1 sdg4[0] sdh4[1]
		      975404544 blocks super 1.0 [2/2] [UU]
		      bitmap: 0/8 pages [0KB], 65536KB chunk
		...

consisting of two Linux-RAID partitions on a gpt disk

	sgdisk -p /dev/sdg
		Disk /dev/sdg: 1953525168 sectors, 931.5 GiB
		Logical sector size: 512 bytes
		Disk identifier (GUID): ...
		Partition table holds up to 128 entries
		First usable sector is 34, last usable sector is 1953525134
		Partitions will be aligned on 2048-sector boundaries
		Total free space is 2015 sectors (1007.5 KiB)

		Number  Start (sector)    End (sector)  Size       Code  Name
		   1            2048            4095   1024.0 KiB  EF02  BIOS Boot Partition
		   2            4096          618495   300.0 MiB   EF00  EFI System Partition
		   3          618496         2715646   1024.0 MiB  FD00  RAID for /boot
		   4         2715648      1953525134   930.2 GiB   FD00  RAID for LVMs

	sgdisk -p /dev/sdh
		Disk /dev/sdh: 1953525168 sectors, 931.5 GiB
		Logical sector size: 512 bytes
		Disk identifier (GUID): ...
		Partition table holds up to 128 entries
		First usable sector is 34, last usable sector is 1953525134
		Partitions will be aligned on 2048-sector boundaries
		Total free space is 2015 sectors (1007.5 KiB)

		Number  Start (sector)    End (sector)  Size       Code  Name
		   1            2048            4095   1024.0 KiB  EF02  BIOS Boot Partition
		   2            4096          618495   300.0 MiB   EF00  EFI System Partition
		   3          618496         2715646   1024.0 MiB  FD00  RAID for /boot
		   4         2715648      1953525134   930.2 GiB   FD00  RAID for LVMs

The RAID's healthy, the system boots, and I can see/use all the existing LVs on the VG/PV.

I just can't create new LVs anymore.

Any suggestions at to problem & fix?

LT