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    linux系统下一个冷门的RAID卡ioc0及其监控mpt-status

    栏目:Linux/apache问题 时间:2019-03-08 13:30

    这篇文章主要介绍了linux系统下一个冷门的RAID卡ioc0及其监控mpt-status,需要的朋友可以参考下

    新接手了一台Linux服务器,准备检查是否有配置RAID。
     
    先查看是否有RAID卡:

    复制代码 代码如下:
    # dmesg|grep -i raid
    mptsas: ioc0: attaching raid volume, channel 1, id 0
    device-mapper: dm-raid45: initialized v0.2594l
    md: Autodetecting RAID arrays.

    很明显是有的,只是无法确定RAID卡的类型是ioc0还是dm-raid45,于是开始百度。后来找到了这样一个工具:mpt-status,而且在下载界面里,有这样几句话:
     
    mpt-status: get status of LSI 1030 RAID (mptlinux, fusion, mpt, ioc) controller
     
    This driver has many names. As best I understand their use:
    LSI 1030
        The make and model of the controller
    mptlinux
        The name of the driver distribution. /proc/mpt/version might say, for example, mptlinux-2.05.11.03.
    Fusion
        The trade name for the chipset (?). The driver distribution, though called mptlinux, actually lives in drivers/message/fusion.
    mpt
        Message Passing Technology; the prefix used for all things that related to the driver. The /proc device is /proc/mptctl, for example.
    ioc
        The name of the controller within Linux. For example the first controller is ioc0.
     
    大意是说LSI 1030 RAID卡有很多个名字,ioc是其中之一。这刚好与之前dmesg的结果吻合。因此基本上可以确定RAID卡的类型是ioc0,属于LSI的产品,可以用mpt-status来对其进行监控。

    mpt-status下载地址:http://sven.stormbind.net/mpt-status-rhel/
     
    接着下载安装:rpm -ihv mpt-status-1.2.0_RC7-3.i386.rpm
     
    建立字符设备:mknod /dev/mptctl c 10 220
    加载内核模块mptctl:modprobe mptctl
     
    查看RAID状态:

    复制代码 代码如下:
    # mpt-status       
    ioc0 vol_id 0 type IM, 2 phy, 465 GB, state OPTIMAL, flags ENABLED
    ioc0 phy 1 scsi_id 8 ATA      WDC WD5002ABYS-1 3B04, 465 GB, state ONLINE, flags NONE
    ioc0 phy 0 scsi_id 1 ATA      WDC WD5002ABYS-1 3B04, 465 GB, state ONLINE, flags NONE

    可以看出,该RAID由两块465G的物理硬盘组成,状态良好。可问题是,RAID级别是多少(0,1,5...)呢?
     
    于是接着百度。
     
    但这次没有结果。
     
    后来在mpt-status的文档(/usr/share/doc/mpt-status-1.2.0_RC7/FAQ )里看到这样一句话:
     
    > 1) Could you tell me from example #1, #2 and #3 where can you see the Raid Level of each hard disk ?
     
    好激动,这不就是我要问的问题吗?再看看答案:
     
    The raid level is not visible, would you like to get this information as well? Or do you want to extract the health state of each disk?
     
    尼玛,回答跟没回答一样...
     
    接着往下看。终于,在文档的最后,给出来了答案: