Linux大神，Reserving 129MB of memory at 48MB for crash...

不懂

本帖最后由 不懂 于 2014-7-3 16:15 编辑

症状：一台【CentOS 6.4 x64】主机，无缘无故，自动宕机了。想通过日志，看看发生了什么？

/var/log/messages 日志：


Jul  3 22:04:27 huanqiubtc1 kernel: Faking a node at 0000000000000000-0000000220000000
Jul  3 22:04:27 huanqiubtc1 kernel: Bootmem setup node 0 0000000000000000-0000000220000000
Jul  3 22:04:27 huanqiubtc1 kernel:  NODE_DATA [0000000000011000 - 0000000000044fff]
Jul  3 22:04:27 huanqiubtc1 kernel:  bootmap [0000000000045000 -  0000000000088fff] pages 44
Jul  3 22:04:27 huanqiubtc1 kernel: (8 early reservations) ==> bootmem [0000000000 - 0220000000]
Jul  3 22:04:27 huanqiubtc1 kernel:  #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
Jul  3 22:04:27 huanqiubtc1 kernel:  #1 [0000006000 - 0000008000]       TRAMPOLINE ==> [0000006000 - 0000008000]
Jul  3 22:04:27 huanqiubtc1 kernel:  #2 [0001000000 - 0002020aa4]    TEXT DATA BSS ==> [0001000000 - 0002020aa4]
Jul  3 22:04:27 huanqiubtc1 kernel:  #3 [0037260000 - 0037feff80]          RAMDISK ==> [0037260000 - 0037feff80]
Jul  3 22:04:27 huanqiubtc1 kernel:  #4 [0000099c00 - 0000100000]    BIOS reserved ==> [0000099c00 - 0000100000]
Jul  3 22:04:27 huanqiubtc1 kernel:  #5 [0002021000 - 0002021081]              BRK ==> [0002021000 - 0002021081]
Jul  3 22:04:27 huanqiubtc1 kernel:  #6 [0000008000 - 000000c000]          PGTABLE ==> [0000008000 - 000000c000]
Jul  3 22:04:27 huanqiubtc1 kernel:  #7 [000000c000 - 0000011000]          PGTABLE ==> [000000c000 - 0000011000]
Jul  3 22:04:27 huanqiubtc1 kernel: found SMP MP-table at [ffff8800000fd860] fd860
Jul  3 22:04:27 huanqiubtc1 kernel:
Reserving 129MB of memory at 48MB for crashkernel (System RAM: 8704MB)

Jul  3 22:04:27 huanqiubtc1 kernel: kvm-clock: Using msrs 4b564d01 and 4b564d00
Jul  3 22:04:27 huanqiubtc1 kernel: kvm-clock: cpu 0, msr 0:1c247c1, boot clock

**********************************************************************************************


Reserving 129MB of memory at 48MB for crashkernel (System RAM: 8704MB)
，这句是什么意思？

不懂

这是一段启动主机的日志，对吗

一个相似的例子：
http://serverfault.com/questions/364610/server-suddenly-became-unresponsive-to-ssh

河蟹哥

这是啥？

SKIDROW

内核出问题了？在grub换另外的内核启动试试。