kern/107608: Raid Problem beim Zugriff auf Raid

[Lars Engels]

The following reply was made to PR kern/107608; it has been noted by GNATS.

From: Lars Engels <lars.engels at 0x20.net>
To: bug-followup at FreeBSD.org, kleister at 1a-infosysteme.de
Cc:  
Subject: Re: kern/107608: Raid Problem beim Zugriff auf Raid
Date: Sun, 7 Jan 2007 22:52:14 +0100

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 Remko asked me to translate the pr from german to (bad) english.
 
 ------------------------------------------------------------------
 
 Hello, following problem:
 
 The server runs under heavy load without any problem for about a week.
 Then, when the swap is accessed, the whole system freezes with this
 error message:
 
 swap_pager: indefinite wait buffer: bufobj: 0, blkno:2, size: 4096
 swap_pager: indefinite wait buffer: bufobj: 0, blkno:18, size: 4096
 swap_pager: indefinite wait buffer: bufobj: 0, blkno:5, size: 4096
 
 The System hangs and needs to be resetted.
 
 I already googled the problem and found other people having the same
 problem but related to RAID cards.
 The RAID doesn't get destroyed then.
 
 tw_cli /c0 show all
 /c0 Driver Version = 3.60.02.012
 /c0 Model = 9500S-8
 /c0 Memory Installed = 112MB
 /c0 Firmware Version = FE9X 2.08.00.006
 /c0 Bios Version = BE9X 2.03.01.052
 /c0 Monitor Version = BL9X 2.02.00.001
 /c0 Serial Number = L19404A5400107
 /c0 PCB Version = Rev 019
 /c0 PCHIP Version = 1.50
 /c0 ACHIP Version = 3.20
 /c0 Number of Ports = 8
 /c0 Number of Units = 3
 /c0 Number of Drives = 8
 /c0 Total Optimal Units = 3
 /c0 Not Optimal Units = 0
 /c0 JBOD Export Policy = off
 /c0 Disk Spinup Policy = 1
 /c0 Spinup Stagger Time Policy (sec) = 2
 /c0 Auto-Carving Policy = off
 /c0 Auto-Carving Size = 2048 GB
 /c0 Cache on Degrade Policy = Cache Off
 
 Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
 ------------------------------------------------------------------------------
 u0 RAID-10 OK - - 64K 130.365 ON OFF
 u1 RAID-5 OK - - 64K 465.641 ON OFF
 u2 SPARE OK - - - 232.877 - OFF
 
 Port Status Unit Size Blocks Serial
 ---------------------------------------------------------------
 p0 OK u0 69.25 GB 145226112 WD-WMAKE1901350
 p1 OK u0 69.25 GB 145226112 WD-WMAKE1901550
 p2 OK u0 69.25 GB 145226112 WD-WMAKE1902083
 p3 OK u0 69.25 GB 145226112 WD-WMAKE1901530
 p4 OK u1 232.88 GB 488397168 WD-WMANY1038026
 p5 OK u1 232.88 GB 488397168 WD-WCANK2644746
 p6 OK u1 232.88 GB 488397168 WD-WCANK3893478
 p7 OK u2 232.88 GB 488397168 WD-WCAL76951640
 
 
 
 Remark: The problem didn't occut in FreeBSD 5.5.
 
 How-To-Repeat:
 Only with RAID card. I also have the same problem on other RAID
 machines.
 I rule out hardware issues.
 
 Fix:
 Deactivate swap, which isn't that nice...
 
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