http://bugzilla.kernel.org/show_bug.cgi?id=13594 Summary: SMART responses for SATA disks on SAS get interpreted as errors Product: IO/Storage Version: 2.5 Kernel Version: 2.6.30-rc6 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI AssignedTo: linux-scsi@xxxxxxxxxxxxxxx ReportedBy: sgunderson@xxxxxxxxxxx Regression: No Hi, I just bought a LSI SAS3081E-R which I use against a Supermicro backplane to drive ten Seagate SATA disks (7200.11, 750GB and 1.5GB). I'm using the standard Linux Fusion MPT device driver (CONFIG_FUSION_SAS) under Linux 2.6.30-rc6. Everything seems to work pretty well, with one exception: When I use SMART against the drives (say, smartctl -a /dev/sda) the kernel complains with: [ 811.091916] sd 0:0:0:0: [sda] Sense Key : Recovered Error [current] [descriptor] [ 811.099807] Descriptor sense data with sense descriptors (in hex): [ 811.106175] 72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00 [ 811.113262] 00 4f 00 c2 00 50 [ 811.117379] sd 0:0:0:0: [sda] Add. Sense: ATA pass through information available I've tried upgrading to the newest firmware (1.28.02.00, 05-MAY-2009), but all that changed is that the hex dump was added to the error message. Whenever this happens, it appears like all the disks “hiccup” and the kernel loses contact with the controller for a small while. If too many of these happen at once, eventually disks start falling off RAIDs, and the entire machine goes down. It looks to me as if these messages should simply not be treated as errors by the kernel -- smartctl explicitly asks for a response even if the command doesn't fail (by setting CK_COND), so the response probably shouldn't be taken as an error. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.-- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
