The process I took was to first verify my PVs were not assigned anywhere, then I took note of the PV's PP Size and Total PPs.
Next I proceeded to create the VG, in there I specified the PVs I want to use and give it a name, next I create the Logical Volume from the VG, here I can specify copies, max LPs and Number of LPs.
If my PV has 546 Total PPs (128MB per PP), then when I create the LV I can assume that LP has a 1:1 relation to PP on the disk? So (example) if I assign 10 PVs (disks) and I want to use maximum space, 10 (PVs) x 546 = 5460. When creating my LV my Number of LPs would be 5460, if I set to "2 copies" this would be half (2730)?
So that takes care of the LV (basically a partition in MSWIN world?), now we need to give it a filesystem, when using SMITTY and adding an enhanced JFS and we select the 2nd option (previously defined logical volume) it is by default consuming all space on the defined LV?
My initial approach (original post) when I was going to the first option, was creating a enhanced JFS, it would of attempted to create a new LV? Thus this is why I was running into those errors?
As a note, I did find this interesting..
Code:
# lsvg vg_usr1
VOLUME GROUP: vg_usr1 VG IDENTIFIER: 000015010000d60000000149d31c8e44
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 13104 (1677312 megabytes)
MAX LVs: 256 FREE PPs: 13104 (1677312 megabytes)
LVs: 0 USED PPs: 0 (0 megabytes)
OPEN LVs: 0 QUORUM: 13 (Enabled)
TOTAL PVs: 24 VG DESCRIPTORS: 24
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 24 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 1016 MAX PVs: 32
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
PV RESTRICTION: none INFINITE RETRY: no
DISK BLOCK SIZE: 512
As we see I have 13104 Free PPs in my VG, when I attempt to create my LV I get an error.
2 Copies, 6552 LPs (which totals to 13104 LPs available in the vg_usr1).
So why the error? It Seemed to work when i set the LPs to 6000, however now I have 1103 free PPs that I was hoping to allocate to the same jfs2 fs/mount.
Code:
VOLUME GROUP: vg_usr1 VG IDENTIFIER: 000015010000d60000000149d3251b14
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 13104 (1677312 megabytes)
MAX LVs: 256 FREE PPs: 1103 (141184 megabytes)
LVs: 2 USED PPs: 12001 (1536128 megabytes)
OPEN LVs: 2 QUORUM: 13 (Enabled)
TOTAL PVs: 24 VG DESCRIPTORS: 24
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 24 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 1016 MAX PVs: 32
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
PV RESTRICTION: none INFINITE RETRY: no
DISK BLOCK SIZE: 512
Am I hitting some kind of limitation? Just want to understand this fully.
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11-21-2014
