kern/107608: Raid Problem beim Zugriff auf Raid

[Remko Lodder]

Lars Engels wrote:
> 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
> 
>  --Pbi2MkfjSbXbI4MN
>  Content-Type: text/plain; charset=iso-8859-15
>  Content-Disposition: inline
>  
>  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...
>  
>  --Pbi2MkfjSbXbI4MN
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>  --Pbi2MkfjSbXbI4MN--

Thanks Lars for the translation!!

-- 
Kind regards,

      Remko Lodder               ** remko at elvandar.org
      FreeBSD                    ** remko at FreeBSD.org

      /* Quis custodiet ipsos custodes */