Hi Robin,
Thanks for the help.
I will try that.
Regards
Rajesh
Robin Chatterjee saw fit to inform me that:
>Interestingly enough your first partition has 26,608 blocks. now if a
>block is 1k then that is close to 25 mb. looks like only the first
>smallest partition is mirrored....
>I guess what you really need to do is configure 10 separate raid
>devices,
>the first having sda1 and sdb1
>the second with sda2 and sdb2
>
>Then it will work.
>otherwise you have 20 mirrors of the same partition....no earthly use at
>all
>
>
>
>Rajesh Fowkar wrote:
>>
>> Hi,
>>
>> I have got say 6 partitions on sda.
>> I have created 6 partitions on sdb of equal size.
>>
>> My /etc/raidtab file is as follows :
>>
>> raiddev /dev/md0
>> raid-level 1
>> nr-raid-disks 6
>> nr-spare-disks 0
>> persistent-superblock 1
>> chunk-size 4
>>
>> device /dev/sdb1 raid-disk 0
>> device /dev/sdb5 raid-disk 1
>> device /dev/sdb6 raid-disk 2
>> device /dev/sdb7 raid-disk 3
>> device /dev/sdb9 raid-disk 4
>> device /dev/sdb10 raid-disk 5
>> device /dev/sdb11 raid-disk 6
>>
>> If I mount /dev/md0 and If I type df -h it shows /dev/md0 mounted but the disk size
>is shown as only 25MB. Both the HDD are of 9GB each.
>>
>> How should I confirm whether Raid1 is working properly on our server ?
>>
>> How just by specifying sdb1, sdb2 etc. raid knows that I am mirroring sda1, sda2
>etc. to sdb1, sdb2 etc. respectively. Am I doing anything wrong here ?
>>
>> Unless I am sure that the other HDD is exact mirror copy of the first, I could not
>depend on this raid.
>>
>> My /proc/mdstat shows the following after I start raid through init scripts by
>giving the command
>>
>> raidstart /dev/md0
>>
>> <SNIP>
>> Personalities : [raid1]
>> read_ahead 1024 sectors
>> md0 : active raid1 sdb11[6] sdb9[5] sdb7[4] sdb6[3] sdb5[2] sdb1[1] sdb10[0] 26496
>blocks [7/7] [UUUUUUU]
>> unused devices: <none>
>> <SNIP>
>>
>> My partitions are as follows :
>> ------------------------------
>> Disk /dev/sda: 64 heads, 32 sectors, 8683 cylinders
>> Units = cylinders of 2048 * 512 bytes
>>
>> Device Boot Start End Blocks Id System
>> /dev/sda1 * 1 26 26608 83 Linux
>> /dev/sda2 27 8683 8864768 5 Extended
>> /dev/sda5 27 4027 4097008 83 Linux
>> /dev/sda6 4028 6028 2049008 83 Linux
>> /dev/sda7 6029 7029 1025008 83 Linux
>> /dev/sda8 7030 7530 513008 82 Linux swap
>> /dev/sda9 7531 8031 513008 83 Linux
>> /dev/sda10 8032 8532 513008 83 Linux
>> /dev/sda11 8533 8683 154608 83 Linux
>>
>> Disk /dev/sdb: 64 heads, 32 sectors, 8683 cylinders
>> Units = cylinders of 2048 * 512 bytes
>>
>> Device Boot Start End Blocks Id System
>> /dev/sdb1 1 26 26608 83 Linux
>> /dev/sdb2 27 8683 8864768 5 Extended
>> /dev/sdb5 27 4027 4097008 83 Linux
>> /dev/sdb6 4028 6028 2049008 83 Linux
>> /dev/sdb7 6029 7029 1025008 83 Linux
>> /dev/sdb8 7030 7530 513008 82 Linux swap
>> /dev/sdb9 7531 8031 513008 83 Linux
>> /dev/sdb10 8032 8532 513008 83 Linux
>> /dev/sdb11 8533 8683 154608 83 Linux
>>
>> This is my situation for the last one week. I am unable to find out whether raid1
>is working properly because after mounting /dev/md0 it should have shows 9GB - HDD
>size instead it shows 25MB !!
>>
>> Please help me out of this
>>
>> Thanks
>>
>> --
>> Rajesh(ALIAS Shriram) Fowkar
>> --------------------------------------------------------------------------------
>> How I Configured my SiS6215 Card
>?Visit:http://rajesh.computers.webjump.com/linux.html
>> Web Site : http://rajesh.computers.webjump.com/ Email :[EMAIL PROTECTED]
>> Address : KURTARKAR NAGARI, BLDG-C, FLAT NO. T4, THIRD FLOOR, SHANTINAGAR,
>> PONDA - GOA. (INDIA) PHONE : (0832)315932
>>
>> Do not dwell in the past, do not dream of the future, concentrate the mind
>> on the present moment. - Buddha
>>
>> Scandisk is now checking your hard disk. You can start praying. - Anon. :-)
>> ---------------------------------------------------------------------------------
>>
>> ----------------------------------------------
>> LIH is all for free speech. But it was created
>> for a purpose. Violations of the rules of
>> this list will result in stern action.
>
>--
>_END_
>Robin S Chatterjee Yahoo pager ID -Robinchatterjee
>mailto:[EMAIL PROTECTED]
>mailto:[EMAIL PROTECTED]
>FAX 1-(815)550-6171
>Robin's Poetry Pages
>http://www.geocities.com/singerosongs
>Robin's Perl Pages
>http://www.geocities.com/robinchatterjee
>
>----------------------------------------------
>LIH is all for free speech. But it was created
>for a purpose. Violations of the rules of
>this list will result in stern action.
--
Rajesh(ALIAS Shriram) Fowkar
--------------------------------------------------------------------------------
How I Configured my SiS6215 Card ?Visit:http://rajesh.computers.webjump.com/linux.html
Web Site : http://rajesh.computers.webjump.com/ Email :[EMAIL PROTECTED]
Address : KURTARKAR NAGARI, BLDG-C, FLAT NO. T4, THIRD FLOOR, SHANTINAGAR,
PONDA - GOA. (INDIA) PHONE : (0832)315932
Do not dwell in the past, do not dream of the future, concentrate the mind
on the present moment. - Buddha
Scandisk is now checking your hard disk. You can start praying. - Anon. :-)
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