PureDisk 6.6.3a kernel 2.6.16.60-0.85.1-smp may crash.

Article:TECH181948  |  Created: 2012-02-22  |  Updated: 2012-05-15  |  Article URL http://www.symantec.com/docs/TECH181948
Article Type
Technical Solution


Environment

Issue



PureDisk 6.6.3a kernel 2.6.16.60-0.85.1-smp may crash.


Error



'crash' utility 'bt' backtrace analysis of the kernel core dump will report:

crash> bt


PID: 7905   TASK: ffff81018ab03080  CPU: 6   COMMAND: "apache2"
#0 [ffff810160a235e0] machine_kexec at ffffffff8011c4b6
#1 [ffff810160a236b0] crash_kexec at ffffffff80155451
#2 [ffff810160a23770] __die at ffffffff802f3cf8
#3 [ffff810160a237b0] do_page_fault at ffffffff802f5601
#4 [ffff810160a238b0] error_exit at ffffffff8010bd0d
    [exception RIP: ip_nat_setup_info+463]
    RIP: ffffffff88d0251b  RSP: ffff810160a23968  RFLAGS: 00010206
    RAX: 000000000000cfcb  RBX: 0000000000100050  RCX: 000000000c0bb40a
    RDX: ffff810160a23998  RSI: 0000000000000001  RDI: ffff810160a23988
    RBP: ffff8102d9e1b95c   R8: ffffffff88d06280   R9: 0000000000000000
    R10: ffffffff88d14ba0  R11: ffffffff88bb9ad8  R12: ffff81040e236548
    R13: 0000000000011ab0  R14: 0000000000000000  R15: ffff810160a23988
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
#5 [ffff810160a239e0] ipt_snat_target at ffffffff88d0c2c2 [iptable_nat]
#6 [ffff810160a23a00] ipt_do_table at ffffffff88cfa88d [ip_tables]
#7 [ffff810160a23aa0] ip_nat_rule_find at ffffffff88d0c2e6 [iptable_nat]
#8 [ffff810160a23ad0] ip_nat_fn at ffffffff88d0c69c [iptable_nat]
#9 [ffff810160a23b30] ip_nat_out at ffffffff88d0c863 [iptable_nat]
#10 [ffff810160a23b60] nf_iterate at ffffffff802ac725
#11 [ffff810160a23ba0] nf_hook_slow at ffffffff802ac99c
#12 [ffff810160a23c00] ip_output at ffffffff802b7f41
#13 [ffff810160a23c40] ip_queue_xmit at ffffffff802b77a1
#14 [ffff810160a23cd0] tcp_transmit_skb at ffffffff802c6b08
#15 [ffff810160a23d20] tcp_connect at ffffffff802c8dfb
#16 [ffff810160a23d50] tcp_v4_connect at ffffffff802cc398
#17 [ffff810160a23e50] inet_stream_connect at ffffffff802d762b
#18 [ffff810160a23ec0] sys_connect at ffffffff8028a313
#19 [ffff810160a23f80] system_call at ffffffff8010ae36
    RIP: 00002afb67dfa970  RSP: 00007fffe2498f00  RFLAGS: 00010202
    RAX: 000000000000002a  RBX: ffffffff8010ae36  RCX: 0000000000003640
    RDX: 0000000000000010  RSI: 0000000000ec2860  RDI: 0000000000000014
    RBP: 0000000000000000   R8: 0000000000000004   R9: 0000000000000001
    R10: 00007fffe249917c  R11: 0000000000000246  R12: 0000000000000000
    R13: 0000000000ec2830  R14: 0000000000ecce60  R15: 0000000000000001
    ORIG_RAX: 000000000000002a  CS: 0033  SS: 002b
crash>


Environment



VCS  clustered multiple node PureDisk 6.6.3a storagepool.


Cause



iptables related operating system crash


Solution



Kernel version 2.6.16.60-0.91.1 resolves this issue. Please contact Symantec Technical Support referencing Etrack 2665479 to obtain an updated kernel *if* the crash utility backtrace matches the aforementioned output.

If your kernel core dump crash utility analysis does not match the aforementioned output, then the updated kernel will not resolve the issue.




Article URL http://www.symantec.com/docs/TECH181948


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