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тАО10-22-2004 01:33 AM
тАО10-22-2004 01:33 AM
What I want to do is break the mirror and use one of the Drives to great another server to test some hardware issues.
Can I break the mirror and use the drive on another box. Meaning if I break the mirror will have 2 drives that are almost the same?
Marty
Solved! Go to Solution.
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тАО10-22-2004 01:51 AM
тАО10-22-2004 01:51 AM
Re: using drived from a broken mirror (RedHat 9.0)
I'm not saying it won't work, I'm just saying if it fails that does not mean the mirror is bad.
There are other replication technologies such as mondorescue.org and Norton Ghost that can let you replicate the system onto another disk for tests.
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тАО10-22-2004 02:09 AM
тАО10-22-2004 02:09 AM
Re: using drived from a broken mirror (RedHat 9.0)
Breaking the mirror and just using either drive and see what happens on the other box.
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тАО10-22-2004 05:04 AM
тАО10-22-2004 05:04 AM
Solutionwhen you make a mirror you use md devices and, as far as I know, the filesystem have special characteristics (superblock). So,I think if you put the disk on another system, the target system has to have support for md devices and you have to define the conf file that supports md (raidtab). I have never did something like you want to do, so I am talking just what I think is going to happen.
Please, inform us about your progress and experience.
Regards,
Xyko
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тАО10-22-2004 05:39 AM
тАО10-22-2004 05:39 AM
Re: using drived from a broken mirror (RedHat 9.0)
Most of our other Linux servers we use for firewall, Proxy, etc., we used the 'dd' command to copy the drive and stored it in case the live systms drive failed we could just plug it in make some minor changes and then we would be up.
I think I was basiclly trying to do the came kind of thing with half of a mirror.
Sounds like there is more involved to break a mirror if you are going to use the mirror to great another server. The hardware needs to be considered too.
Marty
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тАО10-22-2004 07:13 AM
тАО10-22-2004 07:13 AM
Re: using drived from a broken mirror (RedHat 9.0)
I think the best way is using Mondo Rescue as Steven told, or using partimage and a live distro. I use a brazilian distro called Kurumin based on Knopix. I boot the server from cd, save the image on a server and, if I need to "reborn" a server I boot from the same cd and reload the saved image. This procedure is good also to replicate servers of the same hardware configuration. Remember that is importante also that you save the disk partition map and the mbr.
Hope it helps.
Xyko
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тАО10-22-2004 07:30 AM
тАО10-22-2004 07:30 AM
Re: using drived from a broken mirror (RedHat 9.0)
Marty
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тАО10-22-2004 07:32 AM
тАО10-22-2004 07:32 AM
Re: using drived from a broken mirror (RedHat 9.0)
Thanks for all your help.
Marty