[prev in list] [next in list] [prev in thread] [next in thread] 

List:       veritas-vx
Subject:    RE: [Veritas-vx] Different subdisk size of original and mirror
From:       Jim Senicka <jsenicka () veritas ! com>
Date:       2004-02-26 16:01:35
Message-ID: 097628D67E23D5119C410008C78639EE0B3AA7FD () LMOXCH02
[Download RAW message or body]

Bigger question.
Was it ever a problem in the first place?


-----Original Message-----
From: veritas-vx-admin@mailman.eng.auburn.edu
[mailto:veritas-vx-admin@mailman.eng.auburn.edu]On Behalf Of Nicole
Leitner
Sent: Thursday, February 26, 2004 10:21 AM
To: veritas-vx@mailman.eng.auburn.edu
Subject: RE: [Veritas-vx] Different subdisk size of original and mirror


Hi again,
what Doug said led me the right way. Thanks.
The volumes were originally created on 36G disks and only moved to the 72G
disks for 
enabling me to mirror on disks of the same size.
I have just removed the original and then "re-mirrored" the volume and all
looks fine.

Problem solved! Thanks a lot!
Nicole

Am 26 Feb 2004 um 8:40 hat Doug Hughes geschrieben:

> On Thu, 26 Feb 2004, Nicole Leitner wrote:
> 
> > Hi there,
> > this is the vxprint -ht output:
> > (for the volume)
> > v  AHTdata7     -            ENABLED  ACTIVE   4505600  SELECT    -
fsgen
> > pl AHTdata7-01  AHTdata7     ENABLED  ACTIVE   4506840  CONCAT    -
RW
> > sd orig2-03-01  AHTdata7-01  orig2-03 0        4506840  0         c4t0d0
ENA
> > pl AHTdata7-02  AHTdata7     ENABLED  ACTIVE   4507968  CONCAT    -
RW
> > sd mirr2-03-01  AHTdata7-02  mirr2-03 0        4507968  0
c4t16d0  ENA
> >
> > (for the disks)
> > dm orig2-03     c4t0d0s2     sliced   10175    143339136 -
> > dm mirr2-03     c4t16d0s2    sliced   10175    143339136 -
> >
> > luxadm display shows that the two disks are of the same type/vendor with
the same
> > firmware.
> >
> > To me it looks as if there are no differences...
> >
> > Thanx,
> > Nicole
> >
> 
> Is it possible that originally this volume was on another disk of
> different geometry and moved here using vxevac or hot relocation?
> if so, then that would keep the original subdisk size, a subsequent
> mirroring of the disk would then try to cylinder align the resulting
> mirror.
> If you go into format/partition, you can confirm the size of a cylinder
> by taking the blocks column and dividing the sectors by cylinders,
> or if you already have a 1 cylinder region (say the vxvm private region)
> you can use that slice (typically 3) to figure out the cylinder alignment
> size.
> e.g.
>   3          -    wu       1 -     1        1.41MB    (1/0/0)         2889
> 
> On this disk it's 2889 block cylinder.
> 
>   3          -    wu       1 -     1        2.00MB    (1/0/0)         4096
> On this one it's a 4096 block cylinder
> 
> 
> 

_______________________________________________
Veritas-vx maillist  -  Veritas-vx@mailman.eng.auburn.edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
_______________________________________________
Veritas-vx maillist  -  Veritas-vx@mailman.eng.auburn.edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
[prev in list] [next in list] [prev in thread] [next in thread]