http://bugzilla.kernel.org/show_bug.cgi?id=11120 Summary: aacraid driver stalls on high-load SMP machines Product: SCSI Drivers Version: 2.5 KernelVersion: 2.6.24 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: AACRAID AssignedTo: scsi_drivers-aacraid@xxxxxxxxxxxxxxxxxxxx ReportedBy: smurf@xxxxxxxxxxxxxx Latest working kernel version: unknown Earliest failing kernel version: probably forever Distribution: Ubuntu hardy Hardware Environment: Dell PowerEdge 2650 Problem Description: Under load, this happens rather often: Jul 18 22:55:24 nun kernel: [86674.467410] aacraid: Host adapter abort request (0,0,2,0) Jul 18 22:55:24 nun kernel: [86674.467487] aacraid: Host adapter abort request (0,0,3,0) Jul 18 22:55:24 nun kernel: [86674.467617] aacraid: Host adapter reset request. SCSI hang ? Jul 18 22:57:26 nun kernel: [86815.728423] aacraid: Host adapter abort request (0,0,0,0) Jul 18 22:57:26 nun kernel: [86815.728500] aacraid: Host adapter abort request (0,0,3,0) Jul 18 22:57:26 nun kernel: [86815.728573] aacraid: Host adapter abort request (0,0,2,0) Jul 18 22:57:26 nun kernel: [86815.728640] aacraid: Host adapter abort request (0,0,1,0) Jul 18 22:57:26 nun kernel: [86815.728772] aacraid: Host adapter reset request. SCSI hang ? Access to the storage thus stalls for ten seconds or so. I have successfully worked around the problem by using "schedtool -a 1 pid-of-basically-everything", so it seems to be an SMP-related problem. However, one CPU is _somewhat_ slower than four, which is quite noticeable, so we'd like to get this handled somehow :-/ lspci: 05:06.0 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01) Subsystem: Dell PowerEdge 2400,2500,2550,4400 Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 7 BIST result: 00 I/O ports at cc00 [size=256] Memory at fccff000 (64-bit, non-prefetchable) [size=4K] Expansion ROM at fcd00000 [disabled] [size=128K] Capabilities: [dc] Power Management version 2 05:06.1 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01) Subsystem: Dell PowerEdge 2400,2500,2550,4400 Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 11 BIST result: 00 I/O ports at c800 [size=256] Memory at fccfe000 (64-bit, non-prefetchable) [size=4K] Expansion ROM at f8100000 [disabled] [size=128K] Capabilities: [dc] Power Management version 2 lspci -n: 05:06.0 0100: 9005:00c5 (rev 01) Subsystem: 1028:00c5 Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 7 BIST result: 00 I/O ports at cc00 [size=256] Memory at fccff000 (64-bit, non-prefetchable) [size=4K] Expansion ROM at fcd00000 [disabled] [size=128K] Capabilities: [dc] Power Management version 2 05:06.1 0100: 9005:00c5 (rev 01) Subsystem: 1028:00c5 Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 11 BIST result: 00 I/O ports at c800 [size=256] Memory at fccfe000 (64-bit, non-prefetchable) [size=4K] Expansion ROM at f8100000 [disabled] [size=128K] Capabilities: [dc] Power Management version 2 -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- 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
