kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

As per upstream https://bugzilla.kernel.org/show_bug.cgi?id=11120#c7 .

** Changed in: linux (Ubuntu)
       Status: Triaged => Invalid

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/249964

Title:
  aacraid driver stalls on high-load SMP machines

Status in The Linux Kernel:
  Won't Fix
Status in “linux” package in Ubuntu:
  Invalid

Bug 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

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/249964/+subscriptions