What's the odds of retaining the data in a software raid-1 array when falling back to CentOS 5.8 x86_64 from CentOS 6.3 x86_64? The array is made up of 2 - 1.5 TB hard disks. The original array was defined under CentOS 5.3 x86_64, then CentOS 6.1 x86_64 was installed and over time upgraded to CentOS 6.3. I need to back-level to test some software not certified for CentOS/RHEL 6. Thanks, Gene Poole
On Tue, Nov 27, 2012 at 10:24:45AM -0500, Gene Poole wrote:> What's the odds of retaining the data in a software raid-1 array when > falling back to CentOS 5.8 x86_64 from CentOS 6.3 x86_64? The array is > made up of 2 - 1.5 TB hard disks. The original array was defined under > CentOS 5.3 x86_64, then CentOS 6.1 x86_64 was installed and over time > upgraded to CentOS 6.3. I need to back-level to test some software not > certified for CentOS/RHEL 6.I have no experience doing that, so this is a form of talking thru my hat, so YMMV. It may be safest to put your raid drives aside for the moment and do a fresh 5.x install on a different drive (or drive pair, if you insist on RAID) for testing purposes, then when done reinsert your 6.x drives. If it must be done on that machine, then I'd suggest either using dd to copy one or both drives of the raid pair to another drive (or pair), or at least using dd to take images of both drives (which are, needless to say, stored offline somewhere) so you can restore them to their original condition after testing. -- ---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------- "For him who is able to keep you from falling and to present you before his glorious presence without fault and with great joy--to the only God our Savior be glory, majesty, power and authority, through Jesus Christ our Lord, before all ages, now and forevermore! Amen." ----------------------------- Jude 1:24,25 (niv) -----------------------------
On Nov 27, 2012 8:25 AM, "Gene Poole" <gene.poole at macys.com> wrote:> > What's the odds of retaining the data in a software raid-1 array when > falling back to CentOS 5.8 x86_64 from CentOS 6.3 x86_64? The array is > made up of 2 - 1.5 TB hard disks. The original array was defined under > CentOS 5.3 x86_64, then CentOS 6.1 x86_64 was installed and over time > upgraded to CentOS 6.3. I need to back-level to test some software not > certified for CentOS/RHEL 6. > > Thanks, > Gene Poole > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centosCentos 6 x86_64 has KVM/QEMU effectively out of the box. Does your testing require bare metal? --Pete
At Tue, 27 Nov 2012 10:24:45 -0500 CentOS mailing list <centos at centos.org> wrote:> > What's the odds of retaining the data in a software raid-1 array when > falling back to CentOS 5.8 x86_64 from CentOS 6.3 x86_64? The array is > made up of 2 - 1.5 TB hard disks. The original array was defined under > CentOS 5.3 x86_64, then CentOS 6.1 x86_64 was installed and over time > upgraded to CentOS 6.3. I need to back-level to test some software not > certified for CentOS/RHEL 6.If you didn't do something like rebuild the raid array when you installed CentOS 6.3, the raid array will just plain work. I'm going to assume that the raid array is a separate data file system from the operating system, i.e. the root file system is on a different file system. This makes things very easy.> > Thanks, > Gene Poole > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >-- Robert Heller -- 978-544-6933 / heller at deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments
Several reasons to rebuild the box: The software to be tested requires a physical server. This is our Sand Box machine, but over time 'we' have been using it as a repository for various things. We can't get another IP address for a VM this time of the year. So much easier to just stick our custom 'offline' build DVD and change the channel in the Satellite server. Thanks, Gene Poole