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24312Re: NSLU2 RAM failure?

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  • reuter.rudolf
    Feb 20, 2010
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      --- In nslu2-linux@yahoogroups.com, "reuter.rudolf" <reuterru@...> wrote:
      >
      > Hello,
      > On a second NSLU2 I installed SlugOS 4.8 beta. When I try to login, after entering the password PuTTY says: "Server unexpectedly closed network connection".
      > Next action was to connect a HyperTerminal to the serial link ttyS0 (115200 baud 8N1). The last lines in the boot log are:
      > INIT: Entering runlevel: 3
      > Data CRC cee07dfc != calculated CRC ae2900a4 for node at 0042f66c
      > Starting OpenBSD Secure Shell server: sshd
      > done.
      >
      > OpenEmbedded Linux LKG300DB0 ttyS0
      >
      > SlugOS 4.8-beta LKG300DB0 ttyS0
      >
      > LKG300DB0 login:
      >
      > A logread showed:
      > Feb 20 14:15:27 (none) user.warn kernel: Data CRC cee07dfc != calculated CRC ae2
      > 900a4 for node at 0042f66c (dez. 4.388.460, RAM)
      >
      > Hence, I assume it could be a RAM failure.
      >
      > Does anybody know how to do a RAM test?
      >
      > Regards, Rudolf
      > p.s. Going back to UNSLUng 6.10 did work, but I wanted to have SlugOS 4.8.
      >
      I found a RAM test program: memtester. I checked 21 MB of RAM: all OK

      How can I find that CRC error?

      Regards, Rudolf

      Console output of the RAM test:
      root@LKG300DB0:~$ scp rudi@192.168.17.28:/home/rudi/Install/SlugOS/memtester memtester
      The authenticity of host '192.168.17.28 (192.168.17.28)' can't be established.
      RSA key fingerprint is 6:2a:8b:49:3c:60:7f:8b:d7:ef:03:3c:bf:b0:50:63.
      Are you sure you want to continue connecting (yes/no)? yes
      Warning: Permanently added '192.168.17.28' (RSA) to the list of known hosts.
      rudi@192.168.17.28's password:
      memtester 100% 10KB 10.4KB/s 00:00
      root@LKG300DB0:~$ free
      total used free shared buffers
      Mem: 30376 9140 21236 0 0
      Swap: 0 0 0
      Total: 30376 9140 21236
      root@LKG300DB0:~$ memtester 21 2
      memtester version 4.0.6 (32-bit)
      Copyright (C) 2006 Charles Cazabon.
      Licensed under the GNU General Public License version 2 (only).

      pagesize is 4096
      pagesizemask is 0xfffff000
      want 21MB (22020096 bytes)
      got 21MB (22020096 bytes), trying mlock ...locked.
      Loop 1/2:
      Stuck Address : ok
      Random Value : ok
      Compare XOR : ok
      Compare SUB : ok
      Compare MUL : ok
      Compare DIV : ok
      Compare OR : ok
      Compare AND : ok
      Sequential Increment: ok
      Solid Bits : ok
      Block Sequential : ok
      Checkerboard : ok
      Bit Spread : ok
      Bit Flip : ok
      Walking Ones : ok
      Walking Zeroes : ok
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