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NSLU2 RAM failure?

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  • reuter.rudolf
    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
    Message 1 of 4 , Feb 20, 2010
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      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.
    • reuter.rudolf
      ... 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:
      Message 2 of 4 , 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
      • Stephen Miller
        I think it might be a Flash CRC error being reported. It might be worth flashing a version that puts things in a bit different place to see if it works or
        Message 3 of 4 , Feb 20, 2010
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          I think it might be a Flash CRC error being reported. It might be worth flashing a version that puts things in a bit different place to see if it works or fails differently.
          sdm485


          On 10-02-20 11:20 AM, reuter.rudolf wrote:
           



          --- 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


        • reuter.rudolf
          Hello Stephen, Thank you for giving help. That was exactely the cause of the error. In order to troubleshoot I put a terminal on /dev/ttyS0: HyperTerminal
          Message 4 of 4 , Mar 4, 2010
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            Hello Stephen,

            Thank you for giving help. That was exactely the cause of the error.

            In order to troubleshoot I put a terminal on /dev/ttyS0:
            HyperTerminal 115200baud8N1 on ttyS0:
            root@LKG300DB0:~$ Data CRC cee07dfc != calculated CRC ae2900a4 for node at 0042f66c
            Data CRC cee07dfc != calculated CRC ae2900a4 for node at 0042f66c
            logread:
            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)
            $ turnup memstick -i /dev/sda1 -t ext3
            cpio: Read error at byte 126976 in file ./usr/sbin/sshd, padding with zeros
            NOTE: must be a defective NAND flash page
            Next I overwrote the defective "sshd" from an archive to the USB stick and it works. Sigh!

            Best regards,
            Rudolf

            --- In nslu2-linux@yahoogroups.com, Stephen Miller <steve@...> wrote:
            >
            > I think it might be a Flash CRC error being reported. It might be worth
            > flashing a version that puts things in a bit different place to see if
            > it works or fails differently.
            > sdm485
            >
            >
            > On 10-02-20 11:20 AM, reuter.rudolf wrote:
            > >
            > >
            > >
            > > --- In nslu2-linux@yahoogroups.com
            > > <mailto:nslu2-linux%40yahoogroups.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@...
            > > <mailto:rudi%40192.168.17.28>:/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@... <mailto:rudi%40192.168.17.28>'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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