easily reproducible filesystem crash on rebuilding array

Tue Dec 16 01:56:05 CST 2014

On Tue, Dec 16, 2014 at 07:10:36AM +1100, Dave Chinner wrote:
> The controller is broken if it's returning EIO to reads when it
> is busy.

What controller is this?  SCSI devices can return a QUEUE BUSY
indicator, so having a RAID controller do something similar doesn't
sound unusual.  But the driver needs to returns translate that into
a QUEUE BUSY so that the SCSI midlayer can handle it correctly.

It might make sense to take this to linux-scsi with the driver
maintainer in Cc.