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Thread: High load 90+

  1. #1

    Unhappy High load 90+

    Hello,
    We have a problem with one of our SAN in active/active. The load is constantly: 98 and the log gives a lot of errors.... Connected LVM's can use the storage but new connections are not accepted any more. What can we do? How can i safely reboot the server?

  2. #2
    Join Date
    Oct 2010
    Location
    GA
    Posts
    935

    Default

    You should investigate why such a high load. Check your raid controller.

  3. #3

    Default

    All VM's are running well on the box, how can i safely restart the high load server without disrupting service? Would you be able to look at the box? How can i start f.e. Top? The Raidcard seems wel...

    Could this be ACPI? or something bios related?

    I see these errors in the log:
    2013/11/29 19:12:06 [47512.717095] ------------[ cut here ]------------
    2013/11/29 19:12:06 [47512.717112] last sysfs file: /sys/devices/system/cpu/cpu23/cache/index2/shared_cpu_map
    2013/11/29 19:12:06 [47512.717114] CPU 3
    2013/11/29 19:12:06 [47512.717141] Pid: 30924, comm: scsi_tm Not tainted 2.6.35.14-oe64-00000-ge4ce801 #2 X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+
    2013/11/29 19:12:06 [47512.717144] RIP: 0010:[] [] scst_sync_confirm_slave_mgmt_cmd_exec+0x1e0/0x1f0 [scst]
    2013/11/29 19:12:06 [47512.717164] RAX: ffffffffa021ad30 RBX: ffff8810763abb88 RCX: ffff881075e4cd08
    2013/11/29 19:12:06 [47512.717167] RDX: 0000000000000006 RSI: 00000000ffffff01 RDI: ffff88086cfd2d80

  4. #4

    Default

    If you using the Active / Active you can move the resources over to he other node to drop down the server. Not sure about the ACPI though if you drop the server down go in the BIOS of the motherboard and disable it and all other power features.
    All the best,

    Todd Maxwell


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  5. #5

    Default

    Can the move be done with a running server and Vm's on them? Will the cluster automatically start again when the reboot is finished?

  6. #6
    Join Date
    Oct 2010
    Location
    GA
    Posts
    935

    Default

    Yes, you can move the resources without stopping your VMs.
    Once the machine is back online, it should join the cluster again.

  7. #7

    Default

    We perform the failover this night but we are now stuck migration is waiting for nothing, a load of 130. We are getting frustrated.
    Last edited by westm003; 11-30-2013 at 02:33 AM.

  8. #8

    Default

    After a forced powerdown and restart all returned to normal again luckely

  9. #9

    Default

    Can you log a ticket with our Support Team and attach the log files?
    We will check what caused the problem.

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