Re: mdadm raid5 giving me heartburn.....
further, when i try to execute any of these mdadm commands on the
/dev/mdX devices, I get errors like:
mdadm: fail to stop array /dev/md0: Device or resource busy
How can i get past them ?? did i miss a step ???
I keep on seeing debian LiveCD , what is that ? how will this help ??
is the is the regular debian cd, but in rescue mode ???
the layout of my drives is such:
500g /dev/sda1,/dev/sda5,/dev/sda6
500g /dev/sdb1,/dev/sdb5,/dev/sdb6
400g /dev/sdc5
400g /dev/sdd5
md0 = 300meg = /boot
md1 = 10gig = swap
md2 = 400gig =/
Can you give a good faq..that is really helpfull...i googled a lot and
came up empty
If you give me a step by step - i would also appriciate it..because i
think i am missing a step.
thanks for your help.
On Sun, Sep 14, 2008 at 8:48 AM, Michael Habashy <mjh2000@gmail.com> wrote:
> On Sun, Sep 14, 2008 at 8:10 AM, Alex Samad <alex@samad.com.au> wrote:
>> On Sat, Sep 13, 2008 at 11:39:47PM -0400, Michael Habashy wrote:
>>> the current state of my system -- it is up and running but i do not
>>> belive for long:
>>>
>>> root@rider:~# cat /proc/mdstat
>>> Personalities : [raid1] [raid6] [raid5] [raid4]
>>> md1 : active raid5 sda5[3](F) sdb5[4](F) sdd5[2] sdc5[1]
>>> 781417344 blocks level 5, 64k chunk, algorithm 2 [3/2] [_UU]
>>>
>>> md2 : active raid1 sda6[0]
>>> 9767424 blocks [2/1] [U_]
>>>
>>> md0 : active raid1 sda1[0]
>>> 289024 blocks [2/1] [U_]
>>
>>
>> looks like you lost some of your mirror sets, what did you mirror sda6
>> with ? just add it back to the raid set (find out why it dropped out),
>> mdadm -A /dev/md2 /dev/<what ever the device was>
>>
>> Plus sdb seems to have failed in the raid5.
>>
>> My guess is sdb has gone faulty, try running some smart tests against
>> it. You will want to be carefull, if you loose another disk you will
>> loose your raid5 (and if its sda your raid1's.
>>
>> Find out whats wrong with sdb and fix it, either replace the drive,
>> check the cables or power or ....
>>
>> It should survive a reboot, presuming sda is hd0
>>
>>>
>>>
>>>
>>> It looks like i got some kind of hardware/software issue --this is a
>>> newly built raid5 system.
>>>
>>> Device md1 is my main / root ssystem.
>>>
>>> How can i fix this ?? I do not want to reboot becasue i am afraid that
>>> it will not come up...
>>>
>>> I need magic or lots of prays...please try to provide both...
>>>
>>> thanks
>>> mjh
>>>
>>>
>>> --
>>> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
>>> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
>>>
>>>
>>
>> --
>> "I don't want to win? If that were the case, why the heck am I on the bus sixteen hours a day, shaking thousands of hands, giving hundreds of speeches, getting pillared in the press and cartoons and still staying on message to win?"
>>
>> - George W. Bush
>> 02/28/2000
>> as quoted in Newsweek
>>
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>> oJoAoPM+f5DlADAbmMtrKxQhzhn43bhQ
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>>
> Thanks for the quick response.
>
> I think sda and sdb are my 500gig harddrives that have swap and /boot
> on them mirrored.
> The raid5 which is / root is going against 4 drives. The 2 (500 gig)
> drives and 2 400 gig sata drives.
>
> Can you tell me what specific utilities to run against these drives ??
> I have googled alot for recovery of mdadm raid drives...i could not
> find anything..except telling me how to remove and add drives.
>
> do not know how to use smartmonitor utilies..do you know of a good faq
> that i can look at??
>
> thanks
> mjh
>
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