How to grow a file System in AIX

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bash-3.00$ lsvg db06vg
VOLUME GROUP:       db06vg                   VG IDENTIFIER:  00caf8cd00004c00000001043dae214d
VG STATE:           active                   PP SIZE:        64 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      7820 (500480 megabytes)
MAX LVs:            256                      FREE PPs:       2 (128 megabytes)
LVs:                1                        USED PPs:       7818 (500352 megabytes)
OPEN LVs:           1                        QUORUM:         6
TOTAL PVs:          10                       VG DESCRIPTORS: 10
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         10                       AUTO ON:        yes
MAX PPs per VG:     32512
MAX PPs per PV:     2032                     MAX PVs:        16
LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable
bash-3.00$

bash-3.00$ lsvg -p db06vg
db06vg:
PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION
vpath16           active            782         0           00..00..00..00..00
vpath36           active            782         0           00..00..00..00..00
vpath37           active            782         0           00..00..00..00..00
vpath42           active            782         0           00..00..00..00..00
vpath56           active            782         0           00..00..00..00..00
vpath63           active            782         1           00..00..00..00..01
vpath17           active            782         0           00..00..00..00..00
vpath18           active            782         0           00..00..00..00..00
vpath19           active            782         1           00..00..00..00..01
vpath20           active            782         0           00..00..00..00..00


bash-3.00$ lsvpcfg vpath16
vpath16 (Avail pv db06vg) 50029479 = hdisk20 (Avail ) hdisk84 (Avail )
bash-3.00$ lsvpcfg vpath36
vpath36 (Avail pv db06vg) 00429467 = hdisk40 (Avail ) hdisk104 (Avail )
bash-3.00$ lsvpcfg vpath37
vpath37 (Avail pv db06vg) 00529467 = hdisk41 (Avail ) hdisk105 (Avail )
bash-3.00$ lsvpcfg vpath42
vpath42 (Avail pv db06vg) 10229467 = hdisk46 (Avail ) hdisk110 (Avail )
bash-3.00$ lsvpcfg vpath56
vpath56 (Avail pv db06vg) 30229467 = hdisk60 (Avail ) hdisk124 (Avail )
bash-3.00$ lsvpcfg vpath63
vpath63 (Avail pv db06vg) 60229467 = hdisk67 (Avail ) hdisk131 (Avail )
bash-3.00$ lsvpcfg vpath17
vpath17 (Avail pv db06vg) 50129479 = hdisk21 (Avail ) hdisk85 (Avail )
bash-3.00$ lsvpcfg vpath18
vpath18 (Avail pv db06vg) 50229479 = hdisk22 (Avail ) hdisk86 (Avail )
bash-3.00$ lsvpcfg vpath19
vpath19 (Avail pv db06vg) 50329479 = hdisk23 (Avail ) hdisk87 (Avail )
bash-3.00$ lsvpcfg vpath20
vpath20 (Avail pv db06vg) 50429479 = hdisk24 (Avail ) hdisk88 (Avail )
bash-3.00$


Separate the PVs by location (29479 - ESS800 in Cplace; 29467 - ESS800 in Chouse)

bash-3.00$ lsvpcfg vpath16
vpath16 (Avail pv db06vg) 50029479 = hdisk20 (Avail ) hdisk84 (Avail )
bash-3.00$ lsvpcfg vpath17
vpath17 (Avail pv db06vg) 50129479 = hdisk21 (Avail ) hdisk85 (Avail )
bash-3.00$ lsvpcfg vpath18
vpath18 (Avail pv db06vg) 50229479 = hdisk22 (Avail ) hdisk86 (Avail )
bash-3.00$ lsvpcfg vpath19
vpath19 (Avail pv db06vg) 50329479 = hdisk23 (Avail ) hdisk87 (Avail )
bash-3.00$ lsvpcfg vpath20
vpath20 (Avail pv db06vg) 50429479 = hdisk24 (Avail ) hdisk88 (Avail )

bash-3.00$ lsvpcfg vpath36
vpath36 (Avail pv db06vg) 00429467 = hdisk40 (Avail ) hdisk104 (Avail )
bash-3.00$ lsvpcfg vpath37
vpath37 (Avail pv db06vg) 00529467 = hdisk41 (Avail ) hdisk105 (Avail )
bash-3.00$ lsvpcfg vpath42
vpath42 (Avail pv db06vg) 10229467 = hdisk46 (Avail ) hdisk110 (Avail )
bash-3.00$ lsvpcfg vpath56
vpath56 (Avail pv db06vg) 30229467 = hdisk60 (Avail ) hdisk124 (Avail )
bash-3.00$ lsvpcfg vpath63
vpath63 (Avail pv db06vg) 60229467 = hdisk67 (Avail ) hdisk131 (Avail )

Unmirrorvg from the PVs in Chouse (in other to ensure that "primary" copy of VG data is on the PVs in Cplace












bash-3.00# lsvg -l db06vg
db06vg:
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT
db06lv              jfs2       3909  3909  5    open/syncd    /db06

bash-3.00# lsvg -p db06vg
db06vg:
PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION
vpath16           active            782         0           00..00..00..00..00
vpath36           active            782         782         157..156..156..156..157
vpath37           active            782         782         157..156..156..156..157
vpath42           active            782         782         157..156..156..156..157
vpath56           active            782         782         157..156..156..156..157
vpath63           active            782         782         157..156..156..156..157
vpath17           active            782         0           00..00..00..00..00
vpath18           active            782         0           00..00..00..00..00
vpath19           active            782         1           00..00..00..00..01
vpath20           active            782         0           00..00..00..00..00
bash-3.00#


Notice that the “FREE PPs” and “TOTAL PPs” for PVs on ESS800 in Chouse are equal i.e., they have no allocated PPs.


Add at least 2 disks to the server (1 from ESS 800 in Chouse and 1 from ESS 800 in Cplace) – if there are no free PVs on the server already.

bash-3.00# lspv | grep vpath | wc -l
      78
bash-3.00# cfgmgr
bash-3.00# lspv | grep vpath | wc -l
      82

(above 4 disks are added to the server – 2 from each Storage Server)

bash-3.00# lsvpcfg
.
.
.
vpath78 (Avail pv ) 10829479 = hdisk316 (Avail ) hdisk318 (Avail ) hdisk324 (Avail ) hdisk326 (Avail )
vpath79 (Avail pv ) 10929479 = hdisk317 (Avail ) hdisk319 (Avail ) hdisk325 (Avail ) hdisk327 (Avail )
vpath80 (Avail ) 00D29467 = hdisk320 (Avail ) hdisk322 (Avail ) hdisk328 (Avail ) hdisk330 (Avail )
vpath81 (Avail ) 00E29467 = hdisk321 (Avail ) hdisk323 (Avail ) hdisk329 (Avail ) hdisk331 (Avail )
bash-3.00#


Add the PVs to the VG
bash-3.00# extendvg db06vg vpath78
bash-3.00# extendvg db06vg vpath80
0516-1254 extendvg: Changing the PVID in the ODM.
bash-3.00#         

bash-3.00# lsvg -p db06vg
db06vg:
PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION
vpath16           active            782         0           00..00..00..00..00
vpath36           active            782         782         157..156..156..156..157
vpath37           active            782         782         157..156..156..156..157
vpath42           active            782         782         157..156..156..156..157
vpath56           active            782         782         157..156..156..156..157
vpath63           active            782         782         157..156..156..156..157
vpath17           active            782         0           00..00..00..00..00
vpath18           active            782         0           00..00..00..00..00
vpath19           active            782         1           00..00..00..00..01
vpath20           active            782         0           00..00..00..00..00
vpath78           active            782         782         157..156..156..156..157
vpath80           active            782         782         157..156..156..156..157
bash-3.00#


Grow the filesystem by the required amount e.g., 5GB

bash-3.00# df -g
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on

/dev/db06lv      244.31     13.76   95%       36     1% /db06


bash-3.00# smit lv










“80” in the figure above is derived as follows: each PP in the VG db06vg is 64MB (see output of “lsvg db06vg” command). Thus to grow the LV by 5GB, 80PPs are needed (i.e., 64MBx80 = 5GB)



bash-3.00# lsvg -p db06vg
db06vg:
PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION
vpath16           active            782         0           00..00..00..00..00
vpath36           active            782         782         157..156..156..156..157
vpath37           active            782         782         157..156..156..156..157
vpath42           active            782         782         157..156..156..156..157
vpath56           active            782         782         157..156..156..156..157
vpath63           active            782         782         157..156..156..156..157
vpath17           active            782         0           00..00..00..00..00
vpath18           active            782         0           00..00..00..00..00
vpath19           active            782         0           00..00..00..00..00
vpath20           active            782         0           00..00..00..00..00
vpath78           active            782         703         157..156..77..156..157
vpath80           active            782         782         157..156..156..156..157

(it is clear from the above command, that all the PVs on the ESS800 in Chouse are still completely unallocated i.e., vpaths 36, 37, 42, 56, 63 and 80)


Grow the filesystem on db06lv LV

bash-3.00# df -g
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on

/dev/db06lv      244.31     13.76   95%       36     1% /db06


bash-3.00# chfs -a size=+10485760 /db06
Filesystem size changed to 522846208


bash-3.00# df -g
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on

/dev/db06lv      249.31     18.76   93%       36     1% /db06


(Re)mirror the Volume Group

bash-3.00# smit vg



















Using the PVs on the ESS800 in Chouse . . . 








Check that the mirroring/syncing is going on . . .

bash-3.00# ps -ef | grep syncvg
    root 2675470       1   0 18:47:36  pts/0  0:00 /bin/ksh /usr/sbin/syncvg -v db06vg


One Final Check . . . (ratio of LPs to PPs is 1:2 which implies mirroring)

bash-3.00# lsvg -l db06vg
db06vg:
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT
db06lv              jfs2       3989  7978  12   open/stale    /db06


Same number of used and free PPs on both sets of PVs (Chouse versus Cplace)
bash-3.00# lsvg -p db06vg
db06vg:
PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION
vpath16           active            782         0           00..00..00..00..00
vpath36           active            782         0           00..00..00..00..00
vpath37           active            782         0           00..00..00..00..00
vpath42           active            782         0           00..00..00..00..00
vpath56           active            782         0           00..00..00..00..00
vpath63           active            782         0           00..00..00..00..00
vpath17           active            782         0           00..00..00..00..00
vpath18           active            782         0           00..00..00..00..00
vpath19           active            782         0           00..00..00..00..00
vpath20           active            782         0           00..00..00..00..00
vpath78           active            782         703         157..156..77..156..157
vpath80           active            782         703         157..156..77..156..157

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