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How to migrate bootable disk to VxVM
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How to migrate bootable disk to VxVM

Migrating the bootable disk to VxVM requires a spare disk to clone the LVM bootable disk. Prior to VxVM Version 4.0, creation of rootdg disk group was mandatory. The standard practice is to use rootdg to allocate the bootable VxVM volume.

In the following example the LVM /dev/vg00 will migrate to /dev/vx/dsk/rootdg.

The system is using c3t2d0 as the current LVM bootable disk. The c3t3d0 will be use to allocate the new VxVM rootdg.

Contents

Check current system status

# uname -a
HP-UX c3650 B.11.11 U 9000/785 2009676210 unlimited-user license
# strings /etc/lvmtab
/dev/vg00
/dev/dsk/c3t2d0
# vgdisplay -v /dev/vg00
--- Volume groups ---
VG Name                     /dev/vg00
VG Write Access             read/write
VG Status                   available
Max LV                      255
Cur LV                      9
Open LV                     9
Max PV                      16
Cur PV                      1
Act PV                      1
Max PE per PV               4393
VGDA                        2
PE Size (Mbytes)            8
Total PE                    4383
Alloc PE                    2139
Free PE                     2244
Total PVG                   0
Total Spare PVs             0
Total Spare PVs in use      0

   --- Logical volumes ---
   LV Name                     /dev/vg00/lvol1
   LV Status                   available/syncd
   LV Size (Mbytes)            512
   Current LE                  64
   Allocated PE                64
   Used PV                     1

   LV Name                     /dev/vg00/lvol2
   LV Status                   available/syncd
   LV Size (Mbytes)            4096
   Current LE                  512
   Allocated PE                512
   Used PV                     1

   LV Name                     /dev/vg00/lvol3
   LV Status                   available/syncd
   LV Size (Mbytes)            512
   Current LE                  64
   Allocated PE                64
   Used PV                     1

   LV Name                     /dev/vg00/lvol9
   LV Status                   available/syncd
   LV Size (Mbytes)            512
   Current LE                  64
   Allocated PE                64
   Used PV                     1

   LV Name                     /dev/vg00/lvol4
   LV Status                   available/syncd
   LV Size (Mbytes)            4096
   Current LE                  512
   Allocated PE                512
   Used PV                     1

   LV Name                     /dev/vg00/lvol5
   LV Status                   available/syncd
   LV Size (Mbytes)            200
   Current LE                  25
   Allocated PE                25
   Used PV                     1

   LV Name                     /dev/vg00/lvol6
   LV Status                   available/syncd
   LV Size (Mbytes)            2072
   Current LE                  259
   Allocated PE                259
   Used PV                     1

   LV Name                     /dev/vg00/lvol7
   LV Status                   available/syncd
   LV Size (Mbytes)            512
   Current LE                  64
   Allocated PE                64
   Used PV                     1

   LV Name                     /dev/vg00/lvol8
   LV Status                   available/syncd
   LV Size (Mbytes)            4600
   Current LE                  575
   Allocated PE                575
   Used PV                     1


   --- Physical volumes ---
   PV Name                     /dev/dsk/c3t2d0
   PV Status                   available
   Total PE                    4383
   Free PE                     2244
   Autoswitch                  On
   Proactive Polling           On
# swlist -l product VRTSvxvm
# Initializing...
# Contacting target "c3650"...
#
# Target:  c3650:/
#

  VRTSvxvm              3.5m           Base VERITAS Volume Manager 3.5 for HP-UX


# ioscan -fnkC disk
Class     I  H/W Path       Driver S/W State   H/W Type     Description
=======================================================================
disk      0  10/0/14/0.0.0  sdisk CLAIMED     DEVICE       TSSTcorpCDDVDW SH-S202J
                           /dev/dsk/c0t0d0   /dev/rdsk/c0t0d0
disk      3  10/0/15/1.0.0  sdisk CLAIMED     DEVICE       MAXTOR  ATLAS10K4_36WLS
                           /dev/dsk/c3t0d0   /dev/rdsk/c3t0d0
disk      4  10/0/15/1.1.0  sdisk CLAIMED     DEVICE       MAXTOR  ATLAS10K4_36WLS
                           /dev/dsk/c3t1d0   /dev/rdsk/c3t1d0
disk      5  10/0/15/1.2.0  sdisk CLAIMED     DEVICE       MAXTOR  ATLAS10K4_36WLS
                           /dev/dsk/c3t2d0   /dev/rdsk/c3t2d0
disk      6  10/0/15/1.3.0  sdisk CLAIMED     DEVICE       MAXTOR  ATLAS10K4_36WLS
                           /dev/dsk/c3t3d0   /dev/rdsk/c3t3d0


Migrate system to VxVM

Converting the root volume group from LVM to VxVM is acomplish using the vxcp_lvmroot command. This commands don't convert the existing volume group to VxVM, it use an spare drive to initializates VxVM and clone the data to the new diskgroup dgroot.

/etc/vx/bin/vxcp_lvmroot [-m mirror_root_da_name]
           [-R percent] [-v] [-b] [-D] new_root_da_name

If VxVM has not yet been enabled using vxinstall, vxcp_lvmroot enables it before initializing the new disks for VxVM use.

# /etc/vx/bin/vxcp_lvmroot -v c3t3d0
vxcp_lvmroot 01:01: Gathering information on LVM root volume group vg00
vxcp_lvmroot 01:01: Checking specified disk(s) for usability
vxcp_lvmroot 01:01: Starting up VxVM
vxcp_lvmroot 01:01: Preparing disk c3t3d0 as a VxVM root disk
vxcp_lvmroot 01:01: Adding disk c3t3d0 to rootdg as DM rootdisk01
vxcp_lvmroot 01:01: Copying /dev/vg00/lvol1 (hfs) to /dev/vx/dsk/rootdg/standvol
vxcp_lvmroot 01:01: Cloning /dev/vg00/lvol2 (swap) to /dev/vx/dsk/rootdg/swapvol
vxcp_lvmroot 01:01: Copying /dev/vg00/lvol3 (vxfs) to /dev/vx/dsk/rootdg/rootvol
vxcp_lvmroot 01:01: Copying /dev/vg00/lvol9 (vxfs) to /dev/vx/dsk/rootdg/softwarevol
vxcp_lvmroot 01:01: Copying /dev/vg00/lvol4 (vxfs) to /dev/vx/dsk/rootdg/optvol
vxcp_lvmroot 01:07: Copying /dev/vg00/lvol5 (vxfs) to /dev/vx/dsk/rootdg/tmpvol
vxcp_lvmroot 01:07: Copying /dev/vg00/lvol6 (vxfs) to /dev/vx/dsk/rootdg/usrvol
vxcp_lvmroot 01:10: Copying /dev/vg00/lvol7 (vxfs) to /dev/vx/dsk/rootdg/homevol
vxcp_lvmroot 01:10: Copying /dev/vg00/lvol8 (vxfs) to /dev/vx/dsk/rootdg/varvol
vxcp_lvmroot 01:12: Setting up disk c3t3d0 as a boot disk
vxcp_lvmroot 01:12: Installing fstab and fixing dev nodes on new root FS
vxcp_lvmroot 01:12: Installing bootconf & rootconf files in new stand FS
vxcp_lvmroot 01:12: Disk c3t3d0 is now a VxVM rootable boot disk
# setboot
Primary bootpath : 10/0/15/1.6.0
Alternate bootpath : 10/0/15/1.2.0

Autoboot is ON (enabled)
Autosearch is OFF (disabled)
# setboot -p 10/0/15/1.3.0
# setboot
Primary bootpath : 10/0/15/1.3.0
Alternate bootpath : 10/0/15/1.2.0

Autoboot is ON (enabled)
Autosearch is OFF (disabled)

Check VxVM status after reboot

# bdf
Filesystem          kbytes    used   avail %used Mounted on
/dev/vx/dsk/rootdg/rootvol
                    524288  137655  362522   28% /
/dev/vx/dsk/rootdg/standvol
                    513000   38359  423341    8% /stand
/dev/vx/dsk/rootdg/varvol
                   4710400  888391 3583173   20% /var
/dev/vx/dsk/rootdg/usrvol
                   2121728 1228566  837354   59% /usr
/dev/vx/dsk/rootdg/tmpvol
                    204800    1167  190910    1% /tmp
/dev/vx/dsk/rootdg/softwarevol
                    524288  194112  309546   39% /software
/dev/vx/dsk/rootdg/optvol
                   4194304 2732933 1370047   67% /opt
/dev/vx/dsk/rootdg/homevol
                    524288   25504  467641    5% /home
# vxprint -rht
Disk group: rootdg

DG NAME         NCONFIG      NLOG     MINORS   GROUP-ID
DM NAME         DEVICE       TYPE     PRIVLEN  PUBLEN   STATE
RV NAME         RLINK_CNT    KSTATE   STATE    PRIMARY  DATAVOLS  SRL
RL NAME         RVG          KSTATE   STATE    REM_HOST REM_DG    REM_RLNK
V  NAME         RVG          KSTATE   STATE    LENGTH   READPOL   PREFPLEX UTYPE
PL NAME         VOLUME       KSTATE   STATE    LENGTH   LAYOUT    NCOL/WID MODE
SD NAME         PLEX         DISK     DISKOFFS LENGTH   [COL/]OFF DEVICE   MODE
SV NAME         PLEX         VOLNAME  NVOLLAYR LENGTH   [COL/]OFF AM/NM    MODE
DC NAME         PARENTVOL    LOGVOL
SP NAME         SNAPVOL      DCO

dg rootdg       default      default  0        1202281276.1025.c3650

dm rootdisk01   c3t3d0       simple   1024     35911593 -

v  homevol      -            ENABLED  ACTIVE   524288   SELECT    -        fsgen
pl homevol-01   homevol      ENABLED  ACTIVE   524288   CONCAT    -        RW
sd rootdisk01-08 homevol-01  rootdisk01 12288000 524288 0         c3t3d0   ENA

v  optvol       -            ENABLED  ACTIVE   4194304  SELECT    -        fsgen
pl optvol-01    optvol       ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd rootdisk01-05 optvol-01   rootdisk01 5767168 4194304 0         c3t3d0   ENA

v  rootvol      -            ENABLED  ACTIVE   524288   SELECT    -        root
pl rootvol-01   rootvol      ENABLED  ACTIVE   524288   CONCAT    -        RW
sd rootdisk01-03 rootvol-01  rootdisk01 4718592 524288  0         c3t3d0   ENA

v  softwarevol  -            ENABLED  ACTIVE   524288   SELECT    -        fsgen
pl softwarevol-01 softwarevol ENABLED ACTIVE   524288   CONCAT    -        RW
sd rootdisk01-04 softwarevol-01 rootdisk01 5242880 524288 0       c3t3d0   ENA

v  standvol     -            ENABLED  ACTIVE   524288   SELECT    -        fsgen
pl standvol-01  standvol     ENABLED  ACTIVE   524288   CONCAT    -        RW
sd rootdisk01-01 standvol-01 rootdisk01 0      524288   0         c3t3d0   ENA

v  swapvol      -            ENABLED  ACTIVE   4194304  SELECT    -        swap
pl swapvol-01   swapvol      ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd rootdisk01-02 swapvol-01  rootdisk01 524288 4194304  0         c3t3d0   ENA

v  tmpvol       -            ENABLED  ACTIVE   204800   SELECT    -        fsgen
pl tmpvol-01    tmpvol       ENABLED  ACTIVE   204800   CONCAT    -        RW
sd rootdisk01-06 tmpvol-01   rootdisk01 9961472 204800  0         c3t3d0   ENA

v  usrvol       -            ENABLED  ACTIVE   2121728  SELECT    -        fsgen
pl usrvol-01    usrvol       ENABLED  ACTIVE   2121728  CONCAT    -        RW
sd rootdisk01-07 usrvol-01   rootdisk01 10166272 2121728 0        c3t3d0   ENA

v  varvol       -            ENABLED  ACTIVE   4710400  SELECT    -        fsgen
pl varvol-01    varvol       ENABLED  ACTIVE   4710400  CONCAT    -        RW
sd rootdisk01-09 varvol-01   rootdisk01 12812288 4710400 0        c3t3d0   ENA

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This page was last modified on 3 March 2010, at 18:55. This page has been accessed 1,540 times.