Extending Mirror-Concat Volume in Veritas Volume Manager

File System Size before FS Extension:

#bdf /test_mnt

Filesystem          kbytes    used   avail %used Mounted on

/dev/vx/dsk/testdg/testvol

                   4159488   17768 4109376    0% /test_mnt

Checking the Layout of the volume:

#vxprint -htg testdg -v testvol

V  NAME         RVG/VSET/CO  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

SC NAME         PLEX         CACHE    DISKOFFS LENGTH   [COL/]OFF DEVICE   MODE

DC NAME         PARENTVOL    LOGVOL

SP NAME         SNAPVOL      DCO

EX NAME         ASSOC        VC                       PERMS    MODE     STATE

v  testvol      -            ENABLED  ACTIVE   4159488  SELECT    -        fsgen

pl testvol-01   testvol      ENABLED  ACTIVE   4159488  CONCAT    -        RW

sd testdg01_4g-01 testvol-01 testdg01_4g 0     4159488  0         apevmx11_0398 ENA

pl testvol-02   testvol      ENABLED  ACTIVE   4159488  CONCAT    -        RW

sd testdg01_4gm-01 testvol-02 testdg01_4gm 0   4159488  0         apevmx12_0398 ENA

The Above Volume is mirror-concat Volume

Extending the volume by: 4G

Initializing a disk:

# vxdisksetup -i apevmx11_070c

# vxdisksetup -i apevmx12_07b5

Adding the disk to the diskgroup:

# vxdg -g testdg adddisk testdg02_4g=apevmx11_070c

# vxdg -g testdg adddisk testdg02_4gm=apevmx12_07b5

Checking the free space available with the given disk:

#vxassist -g testdg maxgrow testvol layout=mirror-concat alloc=testdg02_4g testdg02_4gm

Volume testvol can be extended by 4156416 to: 8315904 (8121Mb)

The above output says that the volume could be max extended by 4156416s, and after increase of this volume by 4156416s, the final size would be 8121Mb or 8315904s

Resizing the Volume

#/etc/vx/bin/vxresize -g testdg -F vxfs testvol +4156416s alloc=testdg02_4g testdg02_4gm

Checking the Layout of the volume:

#vxprint -htg testdg -v testvol

V  NAME         RVG/VSET/CO  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

SC NAME         PLEX         CACHE    DISKOFFS LENGTH   [COL/]OFF DEVICE   MODE

DC NAME         PARENTVOL    LOGVOL

SP NAME         SNAPVOL      DCO

EX NAME         ASSOC        VC                       PERMS    MODE     STATE

v  testvol      -            ENABLED  ACTIVE   8315904  SELECT    -        fsgen

pl testvol-01   testvol      ENABLED  ACTIVE   8315904  CONCAT    -        RW

sd testdg01_4g-01 testvol-01 testdg01_4g 0     4159488  0         apevmx11_0398 ENA

sd testdg02_4g-01 testvol-01 testdg02_4g 0     4156416  4159488   apevmx11_070c ENA

pl testvol-02   testvol      ENABLED  ACTIVE   8315904  CONCAT    -        RW

sd testdg01_4gm-01 testvol-02 testdg01_4gm 0   4159488  0         apevmx12_0398 ENA

sd testdg02_4gm-01 testvol-02 testdg02_4gm 0   4156416  4159488   apevmx12_07b5 ENA

File System Size after FS Increase

#bdf /test_mnt

Filesystem          kbytes    used   avail %used Mounted on

/dev/vx/dsk/testdg/testvol

                   8315904   17896 8233192    0% /test_mnt