Bug#315339: More problems w/ lvm2 and striped lvm1 volumes

[Anders Hammarquist]

Hi!

Here is another data point. I just (tried to) upgrade to lvm2 2.01.14-3
and it breaks my striped lvm1 volme, but the single-disk one works fine.

I've tried the vgcfgbackup/vgcfgrestore trick to try to get the metadata
consistent, but no go. The lvm is sdb + sdc (yes, they're old disks...)

Any ideas? (other than running vgconvert from 2.01.04?)

Initially:
# pvdisplay -v /dev/sdb
    Using physical volume(s) on command line
  --- Physical volume ---
  PV Name               /dev/sdb
  VG Name               vg1
  PV Size               3.00 GB / not usable 11.31 MB
  Allocatable           yes 
  PE Size (KByte)       8192
  Total PE              382
  Free PE               176
  Allocated PE          206
  PV UUID               uUjd8k-fAF9-M3Nv-fMVh-JDb8-Lmde-XOBoZe
   
After vgcfgbackup+restore (so *something* changed):
# pvdisplay -v /dev/sdb
    Using physical volume(s) on command line
  --- Physical volume ---
  PV Name               /dev/sdb
  VG Name               vg1
  PV Size               2.98 GB / not usable 0   
  Allocatable           yes 
  PE Size (KByte)       8192
  Total PE              382
  Free PE               176
  Allocated PE          206
  PV UUID               uUjd8k-fAF9-M3Nv-fMVh-JDb8-Lmde-XOBoZe
   
vgscan from 2.01.14 says (usr lives on vg1):
# vgscan 
  Reading all physical volumes.  This may take a while...
  LV usr: inconsistent LE count 206 != 412
  Internal error: LV segments corrupted in usr.
  Volume group "vg1" not found
  Found volume group "vg2" using metadata type lvm1
Exit 5

# cat /etc/lvm/backup/vg1 
# Generated by LVM2: Thu Oct 13 16:42:42 2005

contents = "Text Format Volume Group"
version = 1

description = "Created *after* executing '/sbin/vgcfgbackup'"

creation_host = "eskarina"      # Linux eskarina 2.6.13.4 #1 SMP Wed Oct 12 22:27:15 MEST 2005 i686
creation_time = 1129214562      # Thu Oct 13 16:42:42 2005

vg1 {
        id = "azz8CP-V6mU-DEyq-Riqc-LPC1-9h6o-xSlzPy"
        seqno = 0
        status = ["RESIZEABLE", "READ", "WRITE"]
        system_id = "eskarina1076353081"
        extent_size = 16384             # 8 Megabytes
        max_lv = 256
        max_pv = 256

        physical_volumes {

                pv0 {
                        id = "uUjd8k-fAF9-M3Nv-fMVh-JDb8-Lmde-XOBoZe"
                        device = "/dev/sdb"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 16768
                        pe_count = 382  # 2.98438 Gigabytes
                }

                pv1 {
                        id = "ouci2x-aJWh-pHgp-b9d6-Ox0I-rXAf-A3StE7"
                        device = "/dev/sdc"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 16768
                        pe_count = 382  # 2.98438 Gigabytes
                }
        }

        logical_volumes {

                usr {
                        id = "000000-0000-0000-0000-0000-0000-000000"
                        status = ["READ", "WRITE", "VISIBLE"]
                        allocation_policy = "normal"
                        read_ahead = 1024
                        segment_count = 1

                        segment1 {
                                start_extent = 0
                                extent_count = 412      # 3.21875 Gigabytes

                                type = "striped"
                                stripe_count = 2
                                stripe_size = 32        # 16 Kilobytes

                                stripes = [
                                        "pv0", 0,
                                        "pv1", 0
                                ]
                        }
                }
        }
}

/Anders

-- 
 -- Of course I'm crazy, but that doesn't mean I'm wrong.
Anders Hammarquist                                  | iko at cd.chalmers.se
Physics student, Chalmers University of Technology, | Hem: +46 31 88 48 50
G|teborg, Sweden.           RADIO: SM6XMM and N2JGL | Mob: +46 707 27 86 87