Originally posted by: SystemAdmin

This thread is w.r.t to a screnario that I feel can corrupt the /etc/filesystem while importing a VG.

Let's assume we created a LV, lv001 with label /test1 and an fs also created with the mount point /test1.If we change the mount point to /test2 the label also changes to /test2.Now I am gonna change only the LV lable to /test3. Here I also consider my understanding that there is LV Label stored in VGDA but not the mount point of the fs. Next we export the respective VG and import it back. And the /etc/filesystems get the mount point of lv001 as /test3 and not /test2 . This fails the mouting of the filesystems again unless we manaully make changes to the mount point in /etc/filesystems.

Next point is , the LV label can be only 127 characters , so if we give a mount point having characters higher than 127 , will that get mounted again ?
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Originally posted by: SystemAdmin

Below are the screenshots ...

1. lslv labellv

LOGICAL VOLUME: labellv VOLUME GROUP: testvg
LV IDENTIFIER: 00426dba00004c000000011762e1f4dc.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 512 PP SIZE: 32 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 2 PPs: 2
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /hardway LABEL: /hardway
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO

1. chlv -L labeltestlv labellv
2. lslv labellv

LOGICAL VOLUME: labellv VOLUME GROUP: testvg
LV IDENTIFIER: 00426dba00004c000000011762e1f4dc.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 512 PP SIZE: 32 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 2 PPs: 2
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /hardway LABEL: labeltestlv
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO

1. lsvg -l testvg

testvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
labellv jfs2 2 2 1 open/syncd /hardway
manlv jfs 10 10 1 closed/syncd /man
loglv00 jfslog 1 1 1 closed/syncd N/A
loglv02 jfs2log 1 1 1 open/syncd N/A

1. umount /hardway
2. varyoffvg testvg
3. exportvg testvg
4. importvg -y testvg hdisk
5. lspv

hdisk0 0044dbba94f26bb1 rootvg active
hdisk1 00426dbaf12fd9be rootvg active
hdisk2 00426dba62dea016 None
hdisk3 00426dba39ecfeb5 data2vg active

1. importvg -y testvg hdisk2

testvg

1. lslv labellv

LOGICAL VOLUME: labellv VOLUME GROUP: testvg
LV IDENTIFIER: 00426dba00004c000000011762e1f4dc.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: closed/syncd
TYPE: jfs2 WRITE VERIFY: off
MAX LPs: 512 PP SIZE: 32 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 2 PPs: 2
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: labeltestlv LABEL: labeltestlv
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?: NO

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