0516-404 allocp: This system cannot fulfill the allocation

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emre@sysaix:/ # chfs -a size=+1G /dizin
0516-404 allocp: This system cannot fulfill the allocation request.
        There are not enough free partitions or not enough physical volumes
        to keep strictness and satisfy allocation requests.  The command
        should be retried with different allocation characteristics.

The Upper Bound is 1 and your data is spread on one disk only:

emre@sysaix:/ # lslv dizinlv
LOGICAL VOLUME:     dizinlv               VOLUME GROUP:   vg10
LV IDENTIFIER:      00c2894e00004c000000010674bd4833.36 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       opened/syncd
TYPE:               jfs2                   WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        128 megabyte(s)
COPIES:             1                      SCHED POLICY:   parallel
LPs:                16                     PPs:            16
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    1
MOUNT POINT:        /dizin LABEL:          dizin
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes (superstrict)
Serialize IO ?:     NO
DEVICESUBTYPE : DS_LVZ

sysaix@root:/ # lslv -l dizinlv
10_lv069:/locate/database35
PV                COPIES        IN BAND       DISTRIBUTION
hdisk1          016:000:000   6%            002:131:102:562:009

In this situation, you cannot increase the LV if the targeted size will spread on more disks than the “UPPER BOUND” value. So you have to change it with the chlv command:

emre@sysaix:/ # chlv -u 1024 dizinlv

emre@sysaix:/ # lslv dizinlv
LOGICAL VOLUME:     dizinlv               VOLUME GROUP:   vg10
LV IDENTIFIER:      00c2894e00004c000000010674bd4833.36 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       opened/syncd
TYPE:               jfs2                   WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        128 megabyte(s)
COPIES:             1                      SCHED POLICY:   parallel
LPs:                178                    PPs:            178
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    1024
MOUNT POINT:        /dizin LABEL:          /dizin
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes (superstrict)
Serialize IO ?:     NO
DEVICESUBTYPE : DS_LVZ

SUPSID01@root:/ # chfs -a size=+7G /dizin
SUPSID01@root:/ # df -g /dizin
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on
/dev/dizinlv     31.25     31.24    1%        4     1% /dizin

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