Bug in upgrade from 7.2.1 to 7.2.3 that causes a panic

Data ONTAP panics when the disk qualification device table size exceeds a threshold limit of 300

When the qualification file qual_devices_v2 is uploaded to /etc directory or when Data ONTAP gets upgraded from release 7.2.1 to release 7.2.3, the filer will update the internal device qualification table with the content of the qualification file.


If there are disks with down rev firmware in the system, the filer will attempt to update the disks to a newer firmware revision. Due to a bug in Data ONTAP, the disk firmware update logic would cause the filer to panic if the qualification file contains drive record count greater than 300.


No other upgrade paths are affected.


BEST SOLUTION: If you are running Data ONTAP 7.2.1, upgrade to a Data ONTAP release that has a fix for both this bug, and bug 238702.


GOOD SOLUTION: Do not upgrade directly from Data ONTAP 7.2.1 to Data ONTAP 7.2.3; upgrade to Data ONTAP 7.2.2 first, then immediately upgrade to 7.2.3.


More information can be found here:


Bug 234290 on the NOW site