Red Hat Bugzilla – Bug 141389
mdadm cannot assemble after moving disks ia32->itanium
Last modified: 2007-11-16 20:14:47 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020830 Description of problem: Interoperability of md device between 32 and 64 bit systems. We have a customer who was using software raid but trying to move it between IA32 and Itanium systems. It broke so an IT ticket was open (#44961). I did a quick hacking around the superblock checksum (kernel) code, it seemed to be working with the changes. The issue was further confirmed by a tech-list post by Doug Ledford at: http://post-office.corp.redhat.com/archives/tech-list/2004-November/msg00887.html Open this bugzilla accordingly so Doug can add the patch into the kernel. Version-Release number of selected component (if applicable): 2.4.21-26.ELsmp How reproducible: Always Steps to Reproduce: 1.create an md device on IA32 system 2.attach the disks into IA64 system 3.assemble the md device as usual Actual Results: Syslog reports: md: invalid superblock checksum on sda1 md: sda1 has invalid sb, not importing! md: md_import_device returned -22 Expected Results: be able to move around md device between IA32 and IA64 machine. Additional info: I meant to open the bugzilla against RHEL 4 but it doesn't seem to give me a choice beyond RHEL 3.
Switching to RHEL4.
Moving to actual RHEL instead of RHEL Beta.
According to the comments #1, the upstream has included the fix in 2004-November. So I suppose the latest rhel4 and rhel 5 should have the fix included. And it is not a bug in the rhel 4.5. Please re-test it with the latest rhel 4 and rhel 5. closing it..