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тАО06-19-2007 10:45 PM
тАО06-19-2007 10:45 PM
Mirroring
WE are using Redhat 2.4.21-37.ELsmp. Please tell me how to check my root disk is mirrored or not (Software mirror and Hardwareware mirror).
Thanks and regards,
Vinu
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тАО06-19-2007 11:21 PM
тАО06-19-2007 11:21 PM
Re: Mirroring
If software mirror try:
# cat /proc/mdstat
If hardware-raid/mirror it depends on your hba. See lspci-command
try:
# cat /proc/scsi/scsi
or ( for Mylex)
# cat /proc/rd/c0/current_status
or ( LSI-Megaraid based):
# megarc -LogPhysInfo -a0
rgds
HGH
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тАО06-19-2007 11:30 PM
тАО06-19-2007 11:30 PM
Re: Mirroring
I exicuted cat /proc/mdstat
command and I got the following out put:
Personalities :
read_ahead not set
Event: 0
unused devices:
What out put I can expect from "cat /proc/mdstat"
if mirroring is there??
Regs,
Vinu
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тАО06-19-2007 11:42 PM
тАО06-19-2007 11:42 PM
Re: Mirroring
In case of a md-software raid you should find some entries like this:
# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 hda2[0] hdc2[1]
289088 blocks [2/2] [UU]
But since you dont have something like this you do not have a software-raid/mirror.
So check for HW-raid. What HD-controller do you have?
Do the "lspci" command.
rgds
HGH
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тАО06-19-2007 11:54 PM
тАО06-19-2007 11:54 PM
Re: Mirroring
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тАО06-20-2007 12:01 AM
тАО06-20-2007 12:01 AM
Re: Mirroring
As you're posting in a HP forum you may well be running on a server with a SmartArray controller.
The configurations for these by cat'ing /proc/driver/cciss/cciss*
For example for the first SmartArray controller in a server you could see something like this:
# cat /proc/driver/cciss/cciss0
cciss0: HP Smart Array P400i Controller
Board ID: 0x3235103c
Firmware Version: 2.08
IRQ: 161
Logical drives: 1
Current Q depth: 0
Current # commands on controller: 0
Max Q depth since init: 1
Max # commands on controller since init: 32
Max SG entries since init: 31
cciss/c0d0: 73.37GB RAID 1(1+0)
Hope this helps,
Regards,
Rob