[ale] Compaq raid disk. How do I format?

Wed Oct 13 08:50:27 EDT 2004

/dev/ida/c0d2 is the correct device to fdisk on. 
My RH73 system on a Compaq 1850R with hardware mirror (RAID 1) shows
/dev/ida/c0d2 as a block device instead of a directory.

# -----Original Message-----
# From: ale-bounces at ale.org [mailto:ale-bounces at ale.org]On 
# Behalf Of Jeff
# Hubbs
# Sent: Tuesday, October 12, 2004 5:28 PM
# To: Atlanta Linux Enthusiasts
# Subject: Re: [ale] Compaq raid disk. How do I format?
# 
# 
# I think you're running fdisk on the wrong thing.  You need to go
# 
# /sbin/fdisk /dev/ida/c0d2/disc
# 
# (yes, that's with a "c")
# 
# - Jeff
# 
# On Tue, 2004-10-12 at 08:32, Jim Lynch wrote:
# > Thanks, guys for your input.  I'm a bit constrained here.  
# The server is 
# > in California and I'm in GA.  The fellow (NT admin) that 
# set up the raid 
# > config did the install of the disks and configured c0d2 as two 9 Gb 
# > disks mirrored.  I'd like to redo the whole thing, but I 
# can't remotely 
# > and don't have anyone that understands both raid and linux 
# at the site, 
# > so I'm stuck with what I've got.
# > 
# > On your advice I did go into fdisk and try to partition 
# c0d2.  Strange 
# > thing happened.  I can't seem to create more than one partition.  I 
# > think the geometry is screwed up somehow. Note it would only let me 
# > start at block 1 and didn't ask me how large to make the 
# partition.  It 
# > just grabbed it all. Any ideas how to fix that?
# > 
# >  /sbin/fdisk /dev/ida/c0d2
# > 
# > Command (m for help): p
# > 
# > Disk /dev/ida/c0d2: 1 heads, 17764320 sectors, 1 cylinders
# > Units = cylinders of 17764320 * 512 bytes
# > 
# >          Device Boot    Start       End    Blocks   Id  System
# > 
# > Command (m for help): n
# > Command action
# >    e   extended
# >    p   primary partition (1-4)
# > p
# > Partition number (1-4): 1
# > First cylinder (1-1, default 1):
# > Using default value 1
# > 
# > Command (m for help): p
# > 
# > Disk /dev/ida/c0d2: 1 heads, 17764320 sectors, 1 cylinders
# > Units = cylinders of 17764320 * 512 bytes
# > 
# >          Device Boot    Start       End    Blocks   Id  System
# > /dev/ida/c0d2p1             1         1   8882159+  83  Linux
# > Partition 1 has different physical/logical endings:
# >      phys=(768, 0, 32) logical=(0, 0, 17764320)
# > Partition 1 does not end on cylinder boundary:
# >      phys=(768, 0, 32) should be (768, 0, 17764320)
# > 
# > Command (m for help):
# > 
# > 
# > Jim Lynch wrote:
# > 
# > > I've have an old compaq that a Windows tech added some 
# disks to but 
# > > had no idea what to do to make it work on Linux.  From the dmesg 
# > > listing I found:
# > >
# > > Compaq SMART2 Driver (v 2.4.5)
# > > Found 1 controller(s)
# > > cpqarray: Finding drives on ida0 (SMART-2/P)
# > > cpqarray ida/c0d0: blksz=512 nr_blks=8380320
# > > cpqarray ida/c0d1: blksz=512 nr_blks=16768800
# > > cpqarray ida/c0d2: blksz=512 nr_blks=17764320
# > >
# > > It looks like he added ida/c0d2 since I have the other two drives 
# > > mentioned in the fstab file.  When I tried to look at one of the 
# > > existing drives with fdisk I found:
# > > Disk /dev/ida/c0d1: 1 heads, 16768800 sectors, 1 cylinders
# > > Units = cylinders of 16768800 * 512 bytes
# > >
# > >         Device Boot    Start       End    Blocks   Id  System
# > > /dev/ida/c0d1p1   *         1         1   2044064   82  Linux swap
# > > Partition 1 has different physical/logical beginnings 
# (non-Linux?):
# > >     phys=(0, 1, 1) logical=(0, 0, 33)
# > > Partition 1 has different physical/logical endings:
# > >     phys=(500, 254, 32) logical=(0, 0, 4088160)
# > > Partition 1 does not end on cylinder boundary:
# > >     phys=(500, 254, 32) should be (500, 0, 16768800)
# > > /dev/ida/c0d1p2             1         1    391680   83  Linux
# > > Partition 2 has different physical/logical beginnings 
# (non-Linux?):
# > >     phys=(501, 0, 1) logical=(0, 0, 4088161)
# > > Partition 2 has different physical/logical endings:
# > >     phys=(596, 254, 32) logical=(0, 0, 4871520)
# > > Partition 2 does not end on cylinder boundary:
# > >     phys=(596, 254, 32) should be (596, 0, 16768800)
# > > /dev/ida/c0d1p3             1         1    261120   83  Linux
# > > Partition 3 has different physical/logical beginnings 
# (non-Linux?):
# > >     phys=(597, 0, 1) logical=(0, 0, 4871521)
# > > Partition 3 has different physical/logical endings:
# > >     phys=(660, 254, 32) logical=(0, 0, 5393760)
# > > Partition 3 does not end on cylinder boundary:
# > >     phys=(660, 254, 32) should be (660, 0, 16768800)
# > > /dev/ida/c0d1p4             1         1   5687520    f  
# Win95 Ext'd (LBA)
# > > Partition 4 has different physical/logical beginnings 
# (non-Linux?):
# > >     phys=(661, 0, 1) logical=(0, 0, 5393761)
# > > Partition 4 has different physical/logical endings:
# > >     phys=(1023, 254, 32) logical=(0, 0, 16768800)
# > > Partition 4 does not end on cylinder boundary:
# > >     phys=(1023, 254, 32) should be (1023, 0, 16768800)
# > > /dev/ida/c0d1p5             1         1   5687504   83  Linux
# > >
# > > Which makes me a bit leary of using fdisk on these 
# drives.  Most of 
# > > that output doesn't make sense to me.  Can anyone point me in the 
# > > right direction so I can learn how to format this new 
# drive?  This is 
# > > a RH 7.2 system.  If I understand correctly this is a 
# RAID system.  
# > > The new drive  is really 2 9 Gb drives configured as a 
# mirror, so I 
# > > was told.  Is there some other utility I need to use to 
# make sense of 
# > > the partitioning of the existing drives?
# > >
# > > Thanks,
# > > Jim.
# > >
# > >
# > > _______________________________________________
# > > Ale mailing list
# > > Ale at ale.org
# > > http://www.ale.org/mailman/listinfo/ale
# > 
# > 
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