RAID - mdadm Help. (Newbie in Linux)

RAID - mdadm Help. (Newbie in Linux)

[Patrick Luk]

Hi there,
 
    I'm trying to setup a raid system using RedHat Enterprise ES 4. I've
looked through alot of web info and still can't make it work. Any where I
can get some help on how-to do this and make it work consistenly? 
 
    Thanks!
 
Patrick

Re: RAID - mdadm Help. (Newbie in Linux)

[Carlos Knowlton]

Need more data.  What problems are you having?


I had a little difficulty getting used to the new syntax of the mdadm 
utility after using the old raidtools pkg on the 2.2 and 2.4 kernel. 
However, after studying the  man pages for  mdadm(8) and mdadm.conf(5) 
(glossing over them didn't help me much, there is a lot of important 
detail there!), I finally got the hang of it.  mdadm is a powerful 
tool!  I've grown to really like it.  (after my growing pains, that is :)


Regards,
Carlos 

Patrick Luk wrote:

>Hi there,
> 
>    I'm trying to setup a raid system using RedHat Enterprise ES 4. I've
>looked through alot of web info and still can't make it work. Any where I
>can get some help on how-to do this and make it work consistenly? 
> 
>    Thanks!
> 
>Patrick
>
>-
>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: RAID - mdadm Help. (Newbie in Linux)

[Patrick Luk]

Sorry to say this,  but since I'm new to the Linux world, I've followed few
steps but can't get it mounted and to be used on Samba. Bascially trying to
make a simple SOHO server inraid for file system.

1)	I might have made few errors on Druid disk at the beginning of the
installation (I will redo tonight - I think I've found a good doc to help)

2)	 Regardless of the above, this is what I did...

		mdamd --create --verbose /dev/md0 --level1 --raid-devices=2
/dev/sda1 /dev/sdb1
		cat /proc/mdstat (it said compeled pretty quickly since I,ve
made partitions of 5 gigs out of both 250 gig sata drives for raid purpose.
The main drive is for the OS, these 2 are extra storage.)
		Tried to configure automount but don't know how (vi
/etc/fstab adding /dev/md0 /home vfat defaults 1 2). 

		I think I'm missing a step in filesystem they say on some
doc... 
		"Now, you can create a filesystem, just like you would on
any other device, mount it, include it in your /etc/fstab and so on." What
are the procedures ???

	Thanks for reading my question. Can you help you think?


	

-----Original Message-----
From: Carlos Knowlton [mailto:cknowlton@update.fsix.com] 
Sent: June 16, 2005 2:14 PM
To: pluk@impressio.ca
Cc: linux-raid@vger.kernel.org
Subject: Re: RAID - mdadm Help. (Newbie in Linux)

Need more data.  What problems are you having?


I had a little difficulty getting used to the new syntax of the mdadm
utility after using the old raidtools pkg on the 2.2 and 2.4 kernel. 
However, after studying the  man pages for  mdadm(8) and mdadm.conf(5)
(glossing over them didn't help me much, there is a lot of important detail
there!), I finally got the hang of it.  mdadm is a powerful tool!  I've
grown to really like it.  (after my growing pains, that is :)


Regards,
Carlos 

Patrick Luk wrote:

>Hi there,
> 
>    I'm trying to setup a raid system using RedHat Enterprise ES 4. 
>I've looked through alot of web info and still can't make it work. Any 
>where I can get some help on how-to do this and make it work consistenly?
> 
>    Thanks!
> 
>Patrick
>
>-
>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: RAID - mdadm Help. (Newbie in Linux)

[Dan Stromberg]

[-- Attachment #1: Type: text/plain, Size: 661 bytes --]


There's probably a FAQ about this somewhere, but:

http://dcs.nac.uci.edu/~strombrg/Linux-software-RAID.html

On Thu, 2005-06-16 at 12:53 -0400, Patrick Luk wrote:
> Hi there,
>  
>     I'm trying to setup a raid system using RedHat Enterprise ES 4. I've
> looked through alot of web info and still can't make it work. Any where I
> can get some help on how-to do this and make it work consistenly? 
>  
>     Thanks!
>  
> Patrick
> 
> -
> 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
> 

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

Re: RAID - mdadm Help. (Newbie in Linux)

[Mark Cuss]

You need to make the filesystem on your new /dev/md0 device...  You have 
many choices as to which filesystem to use, but ext3 is the most common in 
Linux.

Doing a mkfs.ext3 /dev/md0 should do the trick.  All of the parameters are 
listed in the man page for mkfs / mkfs.ext3.

This is the same as formatting a disk under Windows - all data is torched 
from that device, so make sure there isn't already a filesystem or valuable 
data on it.  If you've just made the RAID device, then there won't be.

To automount it, add a line to fstab...  You've got it essentially right 
with the line you have below....  If you choose to use ext3 as the 
filesystem, just change vfat to ext3.

Mark

----- Original Message ----- 
From: "Patrick Luk" <pluk@impressio.ca>
To: <cknowlton@science.edu>
Cc: <linux-raid@vger.kernel.org>
Sent: Thursday, June 16, 2005 12:32 PM
Subject: RE: RAID - mdadm Help. (Newbie in Linux)


> Sorry to say this,  but since I'm new to the Linux world, I've followed 
> few
> steps but can't get it mounted and to be used on Samba. Bascially trying 
> to
> make a simple SOHO server inraid for file system.
>
> 1) I might have made few errors on Druid disk at the beginning of the
> installation (I will redo tonight - I think I've found a good doc to help)
>
> 2) Regardless of the above, this is what I did...
>
> mdamd --create --verbose /dev/md0 --level1 --raid-devices=2
> /dev/sda1 /dev/sdb1
> cat /proc/mdstat (it said compeled pretty quickly since I,ve
> made partitions of 5 gigs out of both 250 gig sata drives for raid 
> purpose.
> The main drive is for the OS, these 2 are extra storage.)
> Tried to configure automount but don't know how (vi
> /etc/fstab adding /dev/md0 /home vfat defaults 1 2).
>
> I think I'm missing a step in filesystem they say on some
> doc...
> "Now, you can create a filesystem, just like you would on
> any other device, mount it, include it in your /etc/fstab and so on." What
> are the procedures ???
>
> Thanks for reading my question. Can you help you think?
>
>
>
>
> -----Original Message-----
> From: Carlos Knowlton [mailto:cknowlton@update.fsix.com]
> Sent: June 16, 2005 2:14 PM
> To: pluk@impressio.ca
> Cc: linux-raid@vger.kernel.org
> Subject: Re: RAID - mdadm Help. (Newbie in Linux)
>
> Need more data.  What problems are you having?
>
>
> I had a little difficulty getting used to the new syntax of the mdadm
> utility after using the old raidtools pkg on the 2.2 and 2.4 kernel.
> However, after studying the  man pages for  mdadm(8) and mdadm.conf(5)
> (glossing over them didn't help me much, there is a lot of important 
> detail
> there!), I finally got the hang of it.  mdadm is a powerful tool!  I've
> grown to really like it.  (after my growing pains, that is :)
>
>
> Regards,
> Carlos
>
> Patrick Luk wrote:
>
>>Hi there,
>>
>>    I'm trying to setup a raid system using RedHat Enterprise ES 4.
>>I've looked through alot of web info and still can't make it work. Any
>>where I can get some help on how-to do this and make it work consistenly?
>>
>>    Thanks!
>>
>>Patrick
>>
>>-
>>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
>>
>>
>
>
>
> -
> 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
>