Storage space partition

Nair, Murlidharan T mnair at iusb.edu
Fri Apr 14 20:09:41 UTC 2006



-----Original Message-----
From: redhat-install-list-bounces at redhat.com
[mailto:redhat-install-list-bounces at redhat.com] On Behalf Of Bob McClure
Jr
Sent: Friday, April 14, 2006 4:03 PM
To: Getting started with Red Hat Linux
Subject: Re: Storage space partition

> > > > <much snippage>
> > > > 
> > 
> > 
> Here is the output of fdisk -l 
> 
> Disk /dev/sda: 36.3 GB, 36364615680 bytes
> 64 heads, 32 sectors/track, 34680 cylinders
> Units = cylinders of 2048 * 512 = 1048576 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1               1          31       31728   de  Dell Utility
> /dev/sda2              32        7748     7902208   83  Linux
> /dev/sda3   *        7749        7848      102400   83  Linux
> /dev/sda4            7849       34680    27475968    5  Extended
> /dev/sda5            7849        8872     1048560   83  Linux
> /dev/sda6            8873       10920     2097136   82  Linux swap
> /dev/sda7           10921       14925     4101104   83  Linux
> /dev/sda8           14926       19915     5109744   83  Linux
> /dev/sda9           19916       34630    15068144   83  Linux
> 
> Disk /dev/sdb: 700.0 GB, 700079669248 bytes
> 255 heads, 63 sectors/track, 85113 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1       85113   683670141   8e  Linux LVM
> 
> Disk /dev/sdc: 700.0 GB, 700079669248 bytes
> 255 heads, 63 sectors/track, 85113 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdc1               1       85113   683670141   8e  Linux LVM
> 
> Disk /dev/emcpowera: 700.0 GB, 700079669248 bytes
> 255 heads, 63 sectors/track, 85113 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>          Device Boot      Start         End      Blocks   Id  System
> /dev/emcpowera1               1       85113   683670141   8e  Linux
LVM
> 
> 
> Cheers ../Murli

Okay, I somewhat expected that.  Your SAN appears to be showing your
machine multiple variants of the same device.  I don't know what your
SAN hardware is, but my sole experience is with HP's MSA-1500 with
MSA-20 and MSA-30 shelves.  On it, we had to go into "Selective
Storage Presentation" to keep linux from seeing 16 or more devices,
most of which were bogus.  Otherwise, every time you run "vgscan" or
anything related, it's going to see multiple instances of the real
virtual (?) disk.

Once you get that sorted out, I'd run pvcreate on the partition,
/dev/sdb1, rather than the whole drive /dev/sdb.

Cheers,
-- 
Bob McClure, Jr.             Bobcat Open Systems, Inc.
bob at bobcatos.com             http://www.bobcatos.com
The best things in life aren't things.

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If I run pvremove it should put it back to the original state correct?
Here is the output of the test run 

[root at bioinformatics /]# pvremove -t -v /dev/emcpowera
  Test mode: Metadata will NOT be updated.
  /dev/cdrom: open failed: Read-only file system
  Found duplicate PV XKollgX4GsBzbFyJsK13JS62S3P4b0Vr: using /dev/sdb
not /dev/emcpowera
  Found duplicate PV XKollgX4GsBzbFyJsK13JS62S3P4b0Vr: using /dev/sdc
not /dev/emcpowera
  Labels on physical volume "/dev/emcpowera" successfully wiped
    Test mode: Wiping internal cache




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