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[Eddie Johnson]

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[Eddie Johnson]

I installed Suse Linux Professional 8 on a HP Netserver LC3 PII/450.  An
AHA-2940 UW Scsi host adapter with a AIC-78XX Scsi Protocol Chip/50 pin
high density scsi-2 control.  I have a raid (3 drives) off the host
adapter and a 80 gig scsi drive off the mother board. After launching
yast2 the first raid has the following device: LD0 raid 5 34730R:
device_name /dev/sda, vendor megaraid.  Disk two (80 gig drive) has LD1
raid 0 70006R: device name /dev/sdb vendor the same as above.  There was
no raidtab file so I created one with the following:

raiddev /dev/md0
raid-level 5
nr-raid-disks 1(little sketchy on this because it is three drives that
make up the raid)
nr-spare-disks 0
persistent superblock 1
parity-algorithm left-symmetric
chunk-size 2048
device /dev/sda
raid-disk 0 (sketchy here as well)

#Second drive
raiddev /dev/md1
raid-level 5
nr-raid-disks 1
nr-spare-disks 0
persistent-superblock 1
chunk-size 2048
device /dev/sdb
raid-disks 1 (sketchy as well)

Trying to follow the procedures and I type:
mkraid /dev/md0 and I get:

Handling md device /dev/md0
analyzing super-block
disk 0: /dev/sda, 35563520kb, raid superblock at 35563456kb

Second drive I get:

Handling md deviice /dev/md1
analyzing super-block
disk 0: /dev/sdb, 71686144kb, raid superblock at 71686080kb

I then type cat /proc/mdstat and get the following:

Personalities [RAID5]
read_ahead not set
md1: inactive sdb [0]
     71684096 blocks
md0: inactive sda [0]
     35561472 blocks
unused devices: <none>

If I read this correctly both are inactive when it should be stating
that they are active.  At this point I am baffled any suggestions or
possible directions would greatly be appreciated.


Thanks in advance,
Ed

Re: (no subject)

[Alvin Oga]

hiya eddie

i think you want raid5 w/ 3 disks instead of 3 copies of the same
data on 3 disks w/ raid1

watch our for old raid commands (mkraid ) vs new raid commands (raidstart)

More raid commands
       http://www.1U-Raid5.net/HowTo/Commands.uhow2.txt

have fun raiding
alvin

#
#
# sample /etc/raidtab
#
# To start it up
# --------------
#	fdsisk /dev/sda
#	--> use FD raid partion ( 1 partition - the whole disk ?)
#
#	raidstart /dev/md0
#	cat /proc/mdstat	--> see if all 3 disks is listed
#	mke2fs -j /dev/md0
#	mount /dev/md0 /RAID
#
#	dd if=/dev/random of=/RAID/test.big count=1000000
#
#
#
raiddev /dev/md0
raid-level 5
#
nr-raid-disks 3
#  note the above
#
nr-spare-disks 0
persistent superblock 1
parity-algorithm left-symmetric
#
#
# That's a huge chunk .... units are 1024 block * chunk-size 
# chunk-size 2048
chunk-size	8
#
#
# use the "partition" on the disk and define the raiddev device /dev/md0
#
device /dev/sda1
raid-disk 0
#
device /dev/sdb1
raid-disk 1
# 
device /dev/sdc1
raid-disk 2
#
# end of raidtab file


On Wed, 11 Sep 2002, Eddie Johnson wrote:

> I installed Suse Linux Professional 8 on a HP Netserver LC3 PII/450.  An
> AHA-2940 UW Scsi host adapter with a AIC-78XX Scsi Protocol Chip/50 pin
> high density scsi-2 control.  I have a raid (3 drives) off the host
> adapter and a 80 gig scsi drive off the mother board. After launching
> yast2 the first raid has the following device: LD0 raid 5 34730R:
> device_name /dev/sda, vendor megaraid.  Disk two (80 gig drive) has LD1
> raid 0 70006R: device name /dev/sdb vendor the same as above.  There was
> no raidtab file so I created one with the following:
> 
> raiddev /dev/md0
> raid-level 5
> nr-raid-disks 1(little sketchy on this because it is three drives that
> make up the raid)
> nr-spare-disks 0
> persistent superblock 1
> parity-algorithm left-symmetric
> chunk-size 2048
> device /dev/sda
> raid-disk 0 (sketchy here as well)
> 
> #Second drive
> raiddev /dev/md1
> raid-level 5
> nr-raid-disks 1
> nr-spare-disks 0
> persistent-superblock 1
> chunk-size 2048
> device /dev/sdb
> raid-disks 1 (sketchy as well)
> 
> Trying to follow the procedures and I type:
> mkraid /dev/md0 and I get:
> 
> Handling md device /dev/md0
> analyzing super-block
> disk 0: /dev/sda, 35563520kb, raid superblock at 35563456kb
> 
> Second drive I get:
> 
> Handling md deviice /dev/md1
> analyzing super-block
> disk 0: /dev/sdb, 71686144kb, raid superblock at 71686080kb
> 
> I then type cat /proc/mdstat and get the following:
> 
> Personalities [RAID5]
> read_ahead not set
> md1: inactive sdb [0]
>      71684096 blocks
> md0: inactive sda [0]
>      35561472 blocks
> unused devices: <none>
> 
> If I read this correctly both are inactive when it should be stating
> that they are active.  At this point I am baffled any suggestions or
> possible directions would greatly be appreciated.
> 
> 
> Thanks in advance,
> Ed
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: (no subject)

[Neil Brown]

On Wednesday September 11, ejohnson@milleraa.com wrote:
> I installed Suse Linux Professional 8 on a HP Netserver LC3 PII/450.  An
> AHA-2940 UW Scsi host adapter with a AIC-78XX Scsi Protocol Chip/50 pin
> high density scsi-2 control.  I have a raid (3 drives) off the host
> adapter and a 80 gig scsi drive off the mother board. After launching
> yast2 the first raid has the following device: LD0 raid 5 34730R:
> device_name /dev/sda, vendor megaraid.  Disk two (80 gig drive) has LD1
> raid 0 70006R: device name /dev/sdb vendor the same as above.  There was
> no raidtab file so I created one with the following:

It sounds like you have hardware raid (megaraid) that presents the two
raid devices as /dev/sda and /dev/sdb so they look like scsi devices,
but are really raid arrays.
In this case, you don't need raidtab or mkraid at all.  These are for
'software' raid which is quite separate from hardware raid.

software raid:  Linux kernel does all raid management.
hardware raid: special card knows about raid and does lots of the work
		rest of work done in the driver for the card.

NeilBrown

> 
> raiddev /dev/md0
> raid-level 5
> nr-raid-disks 1(little sketchy on this because it is three drives that
> make up the raid)
> nr-spare-disks 0
> persistent superblock 1
> parity-algorithm left-symmetric
> chunk-size 2048
> device /dev/sda
> raid-disk 0 (sketchy here as well)
> 
> #Second drive
> raiddev /dev/md1
> raid-level 5
> nr-raid-disks 1
> nr-spare-disks 0
> persistent-superblock 1
> chunk-size 2048
> device /dev/sdb
> raid-disks 1 (sketchy as well)
> 
> Trying to follow the procedures and I type:
> mkraid /dev/md0 and I get:
> 
> Handling md device /dev/md0
> analyzing super-block
> disk 0: /dev/sda, 35563520kb, raid superblock at 35563456kb
> 
> Second drive I get:
> 
> Handling md deviice /dev/md1
> analyzing super-block
> disk 0: /dev/sdb, 71686144kb, raid superblock at 71686080kb
> 
> I then type cat /proc/mdstat and get the following:
> 
> Personalities [RAID5]
> read_ahead not set
> md1: inactive sdb [0]
>      71684096 blocks
> md0: inactive sda [0]
>      35561472 blocks
> unused devices: <none>
> 
> If I read this correctly both are inactive when it should be stating
> that they are active.  At this point I am baffled any suggestions or
> possible directions would greatly be appreciated.
> 
> 
> Thanks in advance,
> Ed
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: (no subject)

[Luca Berra]

Eddie Johnson wrote:
> I installed Suse Linux Professional 8 on a HP Netserver LC3 PII/450.  An
> AHA-2940 UW Scsi host adapter with a AIC-78XX Scsi Protocol Chip/50 pin
> high density scsi-2 control.  I have a raid (3 drives) off the host
No, you have an HP NetRaid Adapter (Aka AMI megaraid)
> adapter and a 80 gig scsi drive off the mother board. After launching
> yast2 the first raid has the following device: LD0 raid 5 34730R:
> device_name /dev/sda, vendor megaraid.  Disk two (80 gig drive) has LD1
> raid 0 70006R: device name /dev/sdb vendor the same as above.  There was
> no raidtab file so I created one with the following: >
.........
> If I read this correctly both are inactive when it should be stating
> that they are active.  At this point I am baffled any suggestions or
> possible directions would greatly be appreciated.

you don't need md, mkraid or such,
if you want to configure your hw raid just press Ctrl-M at boot
or start the server from the Navigator CD

L.

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[Compte centre de calcul UCP]

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-- 
Cordialement,
L'equipe du Service Informatique Recherche
Universite de Cergy-Pontoise
http://www.cdc.u-cergy.fr

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[Jed Davidow]

unsubscribe linux-raid

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[David Howells]

> -header-y += msr-index.h

I see it on my desktop as /usr/include/asm/msr-index.h and it's been there at
least four years - and as such it's part of the UAPI.  I don't think you can
remove it unless you can guarantee there are no userspace users.

David