MIrroring Problem using lvextend: Striped mirrors are not supported

[sysad1_1]

Hi Gurus,

Need your help. I am trying to mirror my LV's using three PV's. This is my command:

ccbr2prd root:/tmp/mirror> lvextend -m 1 /dev/vgtest01/lvname /dev/dsk/c37t12d4 /dev/dsk/c37t12d5 /dev/dsk/c37t12d6
Striped mirrors are not supported. To enable mirroring options (-m, -M, -c),
do not specify the striping options (-i, -I) when creating logical volumes.

Reason for mirroring is that we presented a new storage and will remove old one. Help me please.

[Shibin_2 · Accepted solution]

Do you have any striping enabled?

Can you send lvdisplay /dev/vgtest01/lvname ?

[Michal Kapalka (mikap)]

hi,

check this thread from ITRC :

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1137690

a specially advice from Torsten.

mikap

[sysad1_1]

here's one screenshot of one of the LV's i want to mirror

root:/tmp/mirror> lvdisplay /dev/DMXvgfs1bcv/lvctrlm
--- Logical volumes ---
LV Name /dev/DMXvgfs1bcv/lvctrlm
VG Name /dev/DMXvgfs1bcv
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule striped
LV Size (Mbytes) 2544
Current LE 159
Allocated PE 159
Stripes 3
Stripe Size (Kbytes) 64
Bad block NONE
Allocation strict
IO Timeout (Seconds) default

[sysad1_1]

the current VG is using 3 PVs from the old storage amounting to 139gigavytes.
(/dev/dsk/cOldtxdx /dev/dsk/cOldtydy /dev/dsk/cOldtzdz)

i extended the VG using 3 PV's from the new storage (/dev/dsk/cNewtxdx /dev/dsk/cNew/tydy & /dev/dsk/cNewtzdz) which in total is also 139 gig.

Since we are planning to migrate I am trying to mirror all LV's to the PV's which came from the new storage.

The current LV's are striped to the PV's from the old storage that is why I am mirroring my LV to the three PV's from the new storage.

lvextend -m 1 /dev/vgxxx/lvolxx /dev/dsk/cNewtxdx /dev/dsk/cNew/tydy /dev/dsk/cNewtzdz
lvreduce -m 0 /dev/vgxxx/lvolxx /dev/dsk/cOldtxdx /dev/dsk/cOldtydy /dev/dsk/cOldtzdz

If this is successful I will then do a vgreduce to remove all the PV's from the old storage

[Shibin_2]

No choice. Striped mirrors are not supported. If you want to migrate, create new VG and LV, then restore the data to new one.

[Bill Hassell]

Striped mirrors are only available with 11.31.

[sysad1_1]

how come that my existing setup is striped?
my box is running hp-ux 11.11

present LV's are striped across 3 pv's

[sysad1_1]

here's a screenshot of lvdisplay -v

ccbr2prd root:/tmp/mirror> lvdisplay -v /dev/DMXvgfs1bcv/lvctrlm | more
--- Logical volumes ---
LV Name /dev/DMXvgfs1bcv/lvctrlm
VG Name /dev/DMXvgfs1bcv
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule striped
LV Size (Mbytes) 2544
Current LE 159
Allocated PE 159
Stripes 3
Stripe Size (Kbytes) 64
Bad block NONE
Allocation strict
IO Timeout (Seconds) default

--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/dsk/c10t2d3 53 53
/dev/dsk/c12t3d3 53 53
/dev/dsk/c10t2d2 53 53

--- Logical extents ---
LE PV1 PE1 Status 1
00000 /dev/dsk/c10t2d2 00523 current
00001 /dev/dsk/c10t2d3 00523 current
00002 /dev/dsk/c12t3d3 00523 current
00003 /dev/dsk/c10t2d2 00524 current
00004 /dev/dsk/c10t2d3 00524 current
00005 /dev/dsk/c12t3d3 00524 current
00006 /dev/dsk/c10t2d2 00525 current
00007 /dev/dsk/c10t2d3 00525 current
00008 /dev/dsk/c12t3d3 00525 current
00009 /dev/dsk/c10t2d2 00526 current
00010 /dev/dsk/c10t2d3 00526 current
00011 /dev/dsk/c12t3d3 00526 current
00012 /dev/dsk/c10t2d2 00527 current
00013 /dev/dsk/c10t2d3 00527 current
00014 /dev/dsk/c12t3d3 00527 current
00015 /dev/dsk/c10t2d2 00528 current

[Terry.giblin]

For the record HP UX has supported "striped mirror's" or is it "mirrored stripes" since 10:20, I remember my old friend, the famous -d option.

You can not stripe a mirror, but you can mirror a stripe.

But it also depends on many other factors as well.

I assume you solve your problem.