解释来自 /proc/[id]/mountstats 或 /proc/self/mountstats 的数据

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【中文标题】解释来自 /proc/[id]/mountstats 或 /proc/self/mountstats 的数据【英文标题】:Interpreting data from /proc/[id]/mountstats or /proc/self/mountstats 【发布时间】:2012-05-04 01:28:57 【问题描述】:

我想监控我的 NFS 共享的 IO。有很多程序正在解释/proc/[id]/mountstats([id] = nfs 客户端/服务器的 id)或/proc/self/mountstats 中的数据。问题是,这些程序每秒计算一些 IO。这在命令行中非常好,但对于我的监控解决方案来说却毫无用处。所以我想自己解读mountstats的计数器。我现在的问题是,我需要一些关于 nfs v4 的 mountstats 的文档。

到目前为止,我的搜索还没有找到任何有用的东西。

感谢您的帮助

/proc/self/mountstats 在 Ubuntu(nfs 客户端)上的示例输出:

...
device IPADRESS:/mountpoint mounted on /mnt/mountpoint with fstype nfs4 statvers=1.0
    opts:   rw,vers=4,rsize=1048576,wsize=1048576,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,nointr,proto=tcp,timeo=600,retrans=2,sec=sys
    age:    77663
    caps:   caps=0x1e,wtmult=512,dtsize=4096,bsize=0,namelen=255
    nfsv4:  bm0=0xfdffbfff,bm1=0xf9be3e,acl=0x3
    sec:    flavor=1,pseudoflavor=1
    events: 1462723 25756220 1025148 1164028 1083099 2027020 31347107 1984730 279773 1915700 1346583 21077199 520498 31825 525298 39026 2180470 1083041 0 16822 990144 11011 0 0 0
    bytes:  46686144592 3990939437 0 0 30238687174 3759616491 7739053 1346583
    RPC iostats version: 1.0  p/v: 100003/4 (nfs)
    xprt:   tcp 852 1 2 0 0 11822378 11822377 0 17669710 13357205
    per-op statistics
            NULL: 0 0 0 0 0 0 0 0
            READ: 1950114 1950114 0 330348288 30355844804 105050 6678050 6907640
           WRITE: 911822 911822 0 3932410080 215189360 10653830 1472320 12211620
          COMMIT: 389509 389509 0 65718096 88808052 8060 253550 284360
            OPEN: 1168845 1168845 0 292577612 554554444 430040 628900 1229990
    OPEN_CONFIRM: 43 43 0 7048 2924 0 10 10
     OPEN_NOATTR: 0 0 0 0 0 0 0 0
    OPEN_DOWNGRADE: 54 54 0 9952 12744 90 0 120
           CLOSE: 1081161 1081161 0 191495392 255153996 201030 404620 767870
         SETATTR: 43303 43303 0 8753024 10046296 1060 25650 30380
          FSINFO: 2 2 0 268 184 0 0 0
           RENEW: 0 0 0 0 0 0 0 0
     SETCLIENTID: 0 0 0 0 0 0 0 0
    SETCLIENTID_CONFIRM: 0 0 0 0 0 0 0 0
            LOCK: 1140050 1140050 0 246277244 77523400 76270 326950 469890
           LOCKT: 1 1 0 188 52 0 0 0
           LOCKU: 1037895 1037895 0 187916912 70576860 18130 357530 441480
          ACCESS: 450451 450451 0 72511716 102702828 21440 222460 280950
         GETATTR: 1462724 1462724 0 224029496 310097488 21290 390910 485350
          LOOKUP: 2043380 2043380 0 361899452 532433688 18200 499200 585170
     LOOKUP_ROOT: 1 1 0 116 232 0 0 0
          REMOVE: 32356 32356 0 5953448 7765440 600 15450 18560
          RENAME: 20388 20388 0 5593088 9215376 510 7740 9750
            LINK: 537 537 0 132024 231984 0 220 270
         SYMLINK: 0 0 0 0 0 0 0 0
          CREATE: 999 999 0 227376 293140 30 650 830
        PATHCONF: 1 1 0 140 72 0 0 0
          STATFS: 2872 2872 0 419360 333152 580 3980 4880
        READLINK: 0 0 0 0 0 0 0 0
         READDIR: 82718 82718 0 14625720 118955760 770 48470 53310
     SERVER_CAPS: 3 3 0 400 264 0 0 0
     DELEGRETURN: 0 0 0 0 0 0 0 0
          GETACL: 0 0 0 0 0 0 0 0
          SETACL: 0 0 0 0 0 0 0 0
    FS_LOCATIONS: 0 0 0 0 0 0 0 0
 ...

【问题讨论】:

我也有同样的问题:serverfault.com/questions/810729/…。你找到解决方案了吗? @JeevanPatnaik 你看过utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex吗? 嗨,谢谢..这行得通。请把它作为答案! 还有很多信息:fsl.cs.stony***.edu/~mchen/mountstat-format.txt 【参考方案1】:

完整来源:http://www.fsl.cs.stony***.edu/~mchen/mountstat-format.txt

       Format of NFS mountstat

Linux内核版本:2.6.32-358.el6.x86_64

重要的统计文件:

- linux/fs/nfs/super.c: nfs_show_stats
- linux/include/linux/nfs_iostat.h: nfs_stat_eventcounters
- linux/net/sunrpc/stats.c: rpc_print_iostats
- linux/net/sunrpc/xprtsock.c: xs_tcp_print_stats

服务器功能(上限)

    上限:服务器功能 wtmult:服务器磁盘块大小 dtsize: 读取目录大小 bsize:服务器块大小 namlen:

nfsv4 (nfs_show_stats)

    bm0:attribute_bitmask[0],支持哪些属性 bm1:attribute_bitmask[1],支持哪些属性 acl:acl_bitmask,支持哪些acl属性

秒,此挂载有效的安全特性 (nfs_show_stats)

    风格:auth->au_ops->au_flavor 伪风味:auth->au_flavor

事件(linux/nfs_iostat.h:nfs_stat_eventcounters)

    inoderevalidate dentry 重新验证 数据无效 attrinvalidate vfsopen vfslookup vfsaccess vfsupdatepage vfsreadpage vfsreadpages vfswritepage vfswritepages vfsgetdents vfssetattr vfsflush vfsfsync vfslock vfsrelease 拥塞等待 设置attrtrunc 扩展写入 愚蠢的重命名 短读 短写 延迟 pnfs_read pnfs_write

字节(linux/nfs_iostat.h:nfs_stat_bytecounters)

    正常读取字节数 正常写入字节数 直接读取字节数 直接写入字节 服务器读取字节数 服务器写入字节(服务器写入字节) 阅读页面 写页

xprt (tcp)

linux/net/sunrpc/xprtsock.c: xs_tcp_print_stats linux/include/linux/sunrpc/xprt.h: struct rpc_xprt
    srcport:临时端口 bind_count:多少 rpcbind 操作 connect_count:多少个 TCP 连接 connect_time:连接用了多长时间 idle_time:传输空闲了多长时间 rpcsends:发送多少个套接字 rpcrecvs:接收多少个套接字 badxids:收到了多少无法匹配的 XID req_u:网络上的平均请求(槽表利用率) bklog_u:积压队列利用率(baklog 队列的平均长度) max_slots:使用的最大 rpc_slots sending_u:发送 q 利用率 pending_u:等待 q 利用率

每个 RPC 操作类型显示 (rpc_print_iostats)

统计记录:rpc_exit_task ---> xprt_release ---> rpc_count_iostats

这里解释了所有 NFS 协议:http://www.freesoft.org/CIE/Topics/115.htm

    操作类型的名称 ops 请求了多少这种类型的操作 trans:已发送多少次这种操作类型的传输 超时:发生了多少次这种操作类型的超时 bytes_sent:已为此操作类型发送了多少字节 bytes_recv:此操作类型已收到多少字节 队列:这种类型的操作在队列中等待了多长时间 传输(毫秒) rtt:客户端等待接收此操作的回复的时间 从服务器输入(毫秒) execute:这种类型的操作需要多长时间才能执行(来自 rpc_init_task 到 rpc_exit_task)(毫秒)

rpc_run_task ---> rpc_new_task ---> rpc_init_task

最后三个时间统计是用ns收集的,不过是转换的 打印出来时发送到 ms。

执行时间应该接近 (queue + rtt)。

注意,在 Linux 源代码中,字段名称的前缀是 “om_”,例如,第一个字段是“om_ops”而不是“ops”。

NFSv4.0 示例

device 130.245.177.235:/nfsdata/ mounted on /mnt with fstype nfs4 statvers=1.1
    opts:    rw,vers=4,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,
            acdirmin=30,acdirmax=60,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,
            clientaddr=130.245.177.234,minorversion=0,local_lock=none
    age:    19  (time, in seconds, since the NFS is mounted)
    caps:    caps=0xfff7,wtmult=512,dtsize=32768,bsize=0,namlen=255
    nfsv4:    bm0=0xfdffafff,bm1=0xf9be3e,acl=0x0
    sec:    flavor=1,pseudoflavor=1
    events:    0 168232 0 0 0 10095 217808 0 2 9797 0 9739 0 0 19739 19739 0 19739 0 0 0 0 0 0 0 0 0
    bytes:    1612840960 0 0 0 627536112 0 158076 0
    RPC iostats version: 1.0  p/v: 100003/4 (nfs)
    xprt:    tcp 737 0 1 0 0 69698 69697 0 81817 0 2 1082 12119
    per-op statistics
            NULL: 0 0 0 0 0 0 0 0
            READ: 9797 9797 0 1567520 628138612 71 7953 8200
           WRITE: 0 0 0 0 0 0 0 0
          COMMIT: 0 0 0 0 0 0 0 0
            OPEN: 19740 19740 0 4737600 7343280 505 3449 4172
    OPEN_CONFIRM: 10211 10211 0 1552072 694348 74 836 1008
     OPEN_NOATTR: 0 0 0 0 0 0 0 0
    OPEN_DOWNGRADE: 0 0 0 0 0 0 0 0
           CLOSE: 19739 19739 0 3316152 2605548 334 3045 3620
         SETATTR: 0 0 0 0 0 0 0 0
          FSINFO: 1 1 0 132 108 0 0 0
           RENEW: 0 0 0 0 0 0 0 0
     SETCLIENTID: 0 0 0 0 0 0 0 0
    SETCLIENTID_CONFIRM: 0 0 0 0 0 0 0 0
            LOCK: 0 0 0 0 0 0 0 0
           LOCKT: 0 0 0 0 0 0 0 0
           LOCKU: 0 0 0 0 0 0 0 0
          ACCESS: 96 96 0 14584 19584 0 8 10
         GETATTR: 1 1 0 132 188 0 0 0
          LOOKUP: 10095 10095 0 1655576 2382420 36 898 1072
     LOOKUP_ROOT: 0 0 0 0 0 0 0 0
          REMOVE: 0 0 0 0 0 0 0 0
          RENAME: 0 0 0 0 0 0 0 0
            LINK: 0 0 0 0 0 0 0 0
         SYMLINK: 0 0 0 0 0 0 0 0
          CREATE: 0 0 0 0 0 0 0 0
        PATHCONF: 1 1 0 128 72 0 0 0
          STATFS: 0 0 0 0 0 0 0 0
        READLINK: 0 0 0 0 0 0 0 0
         READDIR: 0 0 0 0 0 0 0 0
     SERVER_CAPS: 2 2 0 256 176 0 0 0
     DELEGRETURN: 0 0 0 0 0 0 0 0
          GETACL: 0 0 0 0 0 0 0 0
          SETACL: 0 0 0 0 0 0 0 0
    FS_LOCATIONS: 0 0 0 0 0 0 0 0
    RELEASE_LOCKOWNER: 0 0 0 0 0 0 0 0
         SECINFO: 0 0 0 0 0 0 0 0
     EXCHANGE_ID: 0 0 0 0 0 0 0 0
    CREATE_SESSION: 0 0 0 0 0 0 0 0
    DESTROY_SESSION: 0 0 0 0 0 0 0 0
        SEQUENCE: 0 0 0 0 0 0 0 0
    GET_LEASE_TIME: 0 0 0 0 0 0 0 0
    RECLAIM_COMPLETE: 0 0 0 0 0 0 0 0
       LAYOUTGET: 0 0 0 0 0 0 0 0
    GETDEVICEINFO: 0 0 0 0 0 0 0 0
    LAYOUTCOMMIT: 0 0 0 0 0 0 0 0
    LAYOUTRETURN: 0 0 0 0 0 0 0 0


NFSv4.1 EXAMPLE
===============
device 130.245.177.235:/nfsdata mounted on /mnt with fstype nfs4 statvers=1.1
    opts:   rw,vers=4.1,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=130.245.177.234,local_lock=none
    age:    44
    impl_id:    name='',domain='',date='0,0'
    caps:   caps=0x3ffff,wtmult=512,dtsize=32768,bsize=0,namlen=255
    nfsv4:  bm0=0xfdffbfff,bm1=0xf9be3e,bm2=0x800,acl=0x3,sessions,pnfs=not configured
    sec:    flavor=1,pseudoflavor=1
    events: 67379 1692812 0 30749 0 980 1984612 0 0 0 0 0 0 0 96611 96611 0 96611 0 0 0 0 0 0 0 0 0 
    bytes:  0 0 0 0 0 0 0 0 
    RPC iostats version: 1.0  p/v: 100003/4 (nfs)
    xprt:   tcp 674 0 1 0 0 279772 279771 0 649944 0 5 1711 90409
    per-op statistics
            NULL: 0 0 0 0 0 0 0 0
            READ: 0 0 0 0 0 0 0 0
           WRITE: 0 0 0 0 0 0 0 0
          COMMIT: 0 0 0 0 0 0 0 0
            OPEN: 96612 96612 0 27824256 34007424 13349 16253 32061
    OPEN_CONFIRM: 0 0 0 0 0 0 0 0
     OPEN_NOATTR: 0 0 0 0 0 0 0 0
    OPEN_DOWNGRADE: 0 0 0 0 0 0 0 0
           CLOSE: 96610 96610 0 19708440 17003360 2936 11082 15386
         SETATTR: 0 0 0 0 0 0 0 0
          FSINFO: 1 1 0 168 152 0 0 0
           RENEW: 0 0 0 0 0 0 0 0
     SETCLIENTID: 0 0 0 0 0 0 0 0
    SETCLIENTID_CONFIRM: 0 0 0 0 0 0 0 0
            LOCK: 0 0 0 0 0 0 0 0
           LOCKT: 0 0 0 0 0 0 0 0
           LOCKU: 0 0 0 0 0 0 0 0
          ACCESS: 16932 16932 0 3183200 2844576 83 1919 2308
         GETATTR: 67380 67380 0 12128380 15632160 336 8367 10644
          LOOKUP: 1236 1236 0 247176 167784 7 153 197
     LOOKUP_ROOT: 0 0 0 0 0 0 0 0
          REMOVE: 0 0 0 0 0 0 0 0
          RENAME: 0 0 0 0 0 0 0 0
            LINK: 0 0 0 0 0 0 0 0
         SYMLINK: 0 0 0 0 0 0 0 0
          CREATE: 980 980 0 219516 305760 5 168 197
        PATHCONF: 1 1 0 164 116 0 0 0
          STATFS: 0 0 0 0 0 0 0 0
        READLINK: 0 0 0 0 0 0 0 0
         READDIR: 0 0 0 0 0 0 0 0
     SERVER_CAPS: 2 2 0 328 280 0 0 0
     DELEGRETURN: 0 0 0 0 0 0 0 0
          GETACL: 0 0 0 0 0 0 0 0
          SETACL: 0 0 0 0 0 0 0 0
    FS_LOCATIONS: 0 0 0 0 0 0 0 0
    RELEASE_LOCKOWNER: 0 0 0 0 0 0 0 0
         SECINFO: 0 0 0 0 0 0 0 0
     EXCHANGE_ID: 0 0 0 0 0 0 0 0
    CREATE_SESSION: 0 0 0 0 0 0 0 0
    DESTROY_SESSION: 0 0 0 0 0 0 0 0
        SEQUENCE: 0 0 0 0 0 0 0 0
    GET_LEASE_TIME: 0 0 0 0 0 0 0 0
    RECLAIM_COMPLETE: 0 0 0 0 0 0 0 0
       LAYOUTGET: 0 0 0 0 0 0 0 0
    GETDEVICEINFO: 0 0 0 0 0 0 0 0
    LAYOUTCOMMIT: 0 0 0 0 0 0 0 0
    LAYOUTRETURN: 0 0 0 0 0 0 0 0
    SECINFO_NO_NAME: 0 0 0 0 0 0 0 0
    TEST_STATEID: 0 0 0 0 0 0 0 0
    FREE_STATEID: 0 0 0 0 0 0 0 0
    GETDEVICELIST: 0 0 0 0 0 0 0 0
    BIND_CONN_TO_SESSION: 0 0 0 0 0 0 0 0
    DESTROY_CLIENTID: 0 0 0 0 0 0 0 0


# vim: tabstop=2:shiftwidth=2:expandtab:foldmethod=indent

还有https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/linux/nfs_iostat.h 和https://utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex 以供进一步阅读。

【讨论】:

【参考方案2】:

显然没有比code of the mountstats utility 更好的“文档”了。

【讨论】:

【参考方案3】:

你在什么 Linux 上这样做,因为对我来说,在 Redhat 上,mountstats(用于 v4)是这样的:

[root@riau petri]# cat /proc/1511/mountstats 
device rootfs mounted on / with fstype rootfs
device /proc mounted on /proc with fstype proc
device /sys mounted on /sys with fstype sysfs
device udev mounted on /dev with fstype devtmpfs
device devpts mounted on /dev/pts with fstype devpts
device tmpfs mounted on /dev/shm with fstype tmpfs
device /dev/mapper/vg_riau-lv_root mounted on / with fstype ext4
device /proc/bus/usb mounted on /proc/bus/usb with fstype usbfs
device /dev/sda1 mounted on /boot with fstype ext4
device /dev/mapper/vg_riau-lv_home mounted on /home with fstype ext4
device none mounted on /proc/sys/fs/binfmt_misc with fstype binfmt_misc
device cgroup mounted on /cgroup/cpuset with fstype cgroup
device cgroup mounted on /cgroup/cpu with fstype cgroup
device cgroup mounted on /cgroup/cpuacct with fstype cgroup
device cgroup mounted on /cgroup/memory with fstype cgroup
device cgroup mounted on /cgroup/devices with fstype cgroup
device cgroup mounted on /cgroup/freezer with fstype cgroup
device cgroup mounted on /cgroup/net_cls with fstype cgroup
device cgroup mounted on /cgroup/blkio with fstype cgroup
device sunrpc mounted on /var/lib/nfs/rpc_pipefs with fstype rpc_pipefs
device /etc/auto.misc mounted on /misc with fstype autofs
device -hosts mounted on /net with fstype autofs
device nfsd mounted on /proc/fs/nfsd with fstype nfsd

【讨论】:

我在 Ubuntu 上执行此操作,对于 nfs 挂载点设备 IPADRESS:/store 使用 fstype nfs4 statvers=1.0 opts: rw,vers=4,rsize 安装在 /mnt/store 上看起来像这样=1048576,wsize=1048576,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,nointr,proto=tcp,timeo=600,retrans=2,sec=sys 年龄:75405 ...跨度> @tiflor 啊,这很有用,您可以考虑将其作为示例添加到您的问题中 - 这将是最有帮助的。

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