Public bug reported: According to Adaptec timeout values for the SCSI subsystem have changed which lead to Adaptec RAID cards reset and system stall. Information from Adaptec is here:
http://ask.adaptec.com/app/answers/detail/a_id/15357/ This should be fixed by using the latest Controller Firmware *and* the aacraid driver with at least version 1.1.7-28700 which is until now not included in Ubuntu 12.04.1 LTS. http://ask.adaptec.com/app/answers/detail/a_id/17151/ modinfo from Ubuntu 12.04.1 LTS for aacraid: filename: /lib/modules/3.2.0-32-generic/kernel/drivers/scsi/aacraid/aacraid.ko version: 1.1-7[28000]-ms license: GPL description: Dell PERC2, 2/Si, 3/Si, 3/Di, Adaptec Advanced Raid Products, HP NetRAID-4M, IBM ServeRAID & ICP SCSI driver author: Red Hat Inc and Adaptec srcversion: 63B4A0A58E70490A711134A Please update the aacraid at least for the server releases. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1080664 Title: aacraid: Host adapter reset request. SCSI hang? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1080664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs