RE: [CentOS] Re: raid1 disk format?

2008-06-12 Thread William L. Maltby
On Thu, 2008-06-12 at 15:14 -0400, Ross S. W. Walker wrote: > Les Mikesell wrote: > > > You can't beat dd for getting everything exactly the same regardless of > > what you changed - or just splitting the mirrors and letting each sync > > to new partners but then you have to reinstall grub. I p

Re: [CentOS] Re: raid1 disk format?

2008-06-12 Thread Les Mikesell
Ross S. W. Walker wrote: You can't beat dd for getting everything exactly the same regardless of what you changed - or just splitting the mirrors and letting each sync to new partners but then you have to reinstall grub. I prefer clonezilla for non-raid configurations but most of the machine

RE: [CentOS] Re: raid1 disk format?

2008-06-12 Thread Ross S. W. Walker
Les Mikesell wrote: > You can't beat dd for getting everything exactly the same regardless of > what you changed - or just splitting the mirrors and letting each sync > to new partners but then you have to reinstall grub. I prefer > clonezilla for non-raid configurations but most of the machin

Re: [CentOS] Re: raid1 disk format?

2008-06-12 Thread Les Mikesell
Scott Silva wrote: I'm curious as to why 2 complete dd'd copies don't pair at boot. One comes up running and it does work to mdadm --add the partner partitions and after the resync they do automatically pair at boot. Are they dd copies of the different nodes (IE.. dd copy of sda paired wit

[CentOS] Re: raid1 disk format?

2008-06-12 Thread Scott Silva
on 6-12-2008 10:28 AM Les Mikesell spake the following: Scott Silva wrote: I'm curious as to why 2 complete dd'd copies don't pair at boot. One comes up running and it does work to mdadm --add the partner partitions and after the resync they do automatically pair at boot. Are they dd cop

Re: [CentOS] Re: raid1 disk format?

2008-06-12 Thread Les Mikesell
Scott Silva wrote: I'm curious as to why 2 complete dd'd copies don't pair at boot. One comes up running and it does work to mdadm --add the partner partitions and after the resync they do automatically pair at boot. Are they dd copies of the different nodes (IE.. dd copy of sda paired w

[CentOS] Re: raid1 disk format?

2008-06-12 Thread Scott Silva
on 6-11-2008 11:36 PM Les Mikesell spake the following: Scott Silva wrote: I'm curious as to why 2 complete dd'd copies don't pair at boot. One comes up running and it does work to mdadm --add the partner partitions and after the resync they do automatically pair at boot. Are they dd copi

Re: [CentOS] Re: raid1 disk format?

2008-06-11 Thread Les Mikesell
Scott Silva wrote: I'm curious as to why 2 complete dd'd copies don't pair at boot. One comes up running and it does work to mdadm --add the partner partitions and after the resync they do automatically pair at boot. Are they dd copies of the different nodes (IE.. dd copy of sda paired wi

RE: [CentOS] Re: raid1 disk format?

2008-06-11 Thread Ross S. W. Walker
Les Mikesell wrote: > > 'mdadm' writes a listing of the devices in the array to the md > > superblock and orders them by number,major,minor. You cannot add > > another device to the array with the same tuple. > > Isn't this updated at detect time so the device minor's > should always be > dif

[CentOS] Re: raid1 disk format?

2008-06-11 Thread Scott Silva
on 6-11-2008 10:41 AM Les Mikesell spake the following: Ross S. W. Walker wrote: If you have a disk with several partitions set up as members of a raid1 md devices, can you make a dd image of that disk to replace its matching drive with identical partitions or are there differences between t

Re: [CentOS] Re: raid1 disk format?

2008-06-11 Thread Les Mikesell
Ross S. W. Walker wrote: If you have a disk with several partitions set up as members of a raid1 md devices, can you make a dd image of that disk to replace its matching drive with identical partitions or are there differences between the mirrored partitions? you can 'dd' the MBR and then re

RE: [CentOS] Re: raid1 disk format?

2008-06-10 Thread Ross S. W. Walker
Les Mikesell wrote: > Scott Silva wrote: > > > >>> If you have a disk with several partitions set up as members of a > >>> raid1 md devices, can you make a dd image of that disk to replace its > >>> matching drive with identical partitions or are there differences > >>> between the mirrored par

Re: [CentOS] Re: raid1 disk format?

2008-06-10 Thread Les Mikesell
Scott Silva wrote: If you have a disk with several partitions set up as members of a raid1 md devices, can you make a dd image of that disk to replace its matching drive with identical partitions or are there differences between the mirrored partitions? you can 'dd' the MBR and then re-add

[CentOS] Re: raid1 disk format?

2008-06-10 Thread Scott Silva
on 6-10-2008 9:59 AM Ross S. W. Walker spake the following: Les Mikesell wrote: If you have a disk with several partitions set up as members of a raid1 md devices, can you make a dd image of that disk to replace its matching drive with identical partitions or are there differences between the