https://bugzilla.kernel.org/show_bug.cgi?id=15722 Summary: unreliable IO for ata disks under heavy io load Product: SCSI Drivers Version: 2.5 Kernel Version: 2.6.32-2.6.33 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Other AssignedTo: scsi_drivers-other@xxxxxxxxxxxxxxxxxxxx ReportedBy: dujun@xxxxxxxxxxxxx Regression: No with 2.6.32 valilla mptsas driver and 4.22.00 lsi driver, and SATA disks connected through lsi 24x expander, SATA passthrough command sometimes gets resetted during heavy IO. I found this problem is very similar with the bug 14831 in bugzilla.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=14831 . lots of task abort, task reset, bus reset logs in dmesg. the IO is then stalled for somewhile until the resets success. However, the problem only occures when we connect more than 12 SATA disks through expander and during heavy disk io. If we use SAS disks or we connect 16 SATA disks directly to 1068e card or we use less than 12 disks, the problem seems just disappear. 2.6.21 kernel mptsas driver seems worse. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of 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
