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NFSの稼働調査してた時に知ったコマンドのメモ

Posted at

NFSの調査時に知ったコマンドを個人的にメモしておきます。

  • 本日知ったコマンド
    • rpcdebug
    • nfsstat

rpcdebug

カーネルにNFSモジュールのデバッグフラグを立てる事が出来ます。
結果として/var/log/messageにNFSについてのデバッグログを出力することが可能です。

フラグの管理方法(サーバ)

\# 設定
rpcdebug -m nfsd all

\# 解除
rpcdebug -m nfsd -c all

フラグの管理方法(クライアント)

\# 設定
rpcdebug -m nfs all

\# 解除 
rpcdebug -m nfs -c all

ログサンプル

Dec 18 12:50:02 ****** kernel: NFS: permission(0:39/149741207), mask=0x81, res=0
Dec 18 12:50:11 ****** kernel: NFS: nfs_update_inode(0:45/33554496 fh_crc=0x63fd81a6 ct=1 info=0x26040)
Dec 18 12:50:11 ****** kernel: NFS: dentry_delete(dummy.txt, 40800cc)

nfsstat

NFSの統計情報を表示することが出来ます。(サーバ、クライアント共)

表示方法

nfsstat

表示結果サンプル

Server rpc stats:
calls      badcalls   badclnt    badauth    xdrcall
23619395   0          0          0          0

Server nfs v4:
null         compound
1         0% 23619392 99%

Server nfs v4 operations:
op0-unused   op1-unused   op2-future   access       close        commit
0         0% 0         0% 0         0% 6474663   8% 4650798   6% 617       0%
create       delegpurge   delegreturn  getattr      getfh        link
4196      0% 0         0% 4040869   5% 21696402 29% 5809350   7% 67        0%
lock         lockt        locku        lookup       lookup_root  nverify
11836     0% 0         0% 11829     0% 1300628   1% 0         0% 0         0%
open         openattr     open_conf    open_dgrd    putfh        putpubfh
4657851   6% 0         0% 41160     0% 103       0% 23489567 31% 0         0%
putrootfh    read         readdir      readlink     remove       rename
10        0% 1110875   1% 121866    0% 181347    0% 125555    0% 296       0%
renew        restorefh    savefh       secinfo      setattr      setcltid
118212    0% 67        0% 363       0% 0         0% 348596    0% 2         0%
setcltidconf verify       write        rellockowner bc_ctl       bind_conn
2         0% 0         0% 55229     0% 11829     0% 0         0% 0         0%
exchange_id  create_ses   destroy_ses  free_stateid getdirdeleg  getdevinfo
0         0% 0         0% 0         0% 0         0% 0         0% 0         0%
getdevlist   layoutcommit layoutget    layoutreturn secinfononam sequence
0         0% 0         0% 0         0% 0         0% 0         0% 0         0%
set_ssv      test_stateid want_deleg   destroy_clid reclaim_comp
0         0% 0         0% 0         0% 0         0% 0         0%

Client rpc stats:
calls      retrans    authrefrsh
23623634   128        23623645

Client nfs v4:
null         read         write        commit       open         open_conf
0         0% 1110909   4% 55229     0% 617       0% 4658302  19% 41176     0%
open_noat    open_dgrd    close        setattr      fsinfo       renew
0         0% 103       0% 4650844  19% 315558    1% 52        0% 118764    0%
setclntid    confirm      lock         lockt        locku        access
81        0% 81        0% 11836     0% 0         0% 11829     0% 1922375   8%
getattr      lookup       lookup_root  remove       rename       link
4869688  20% 1301349   5% 26        0% 125555    0% 296       0% 67        0%
symlink      create       pathconf     statfs       readlink     readdir
2         0% 4194      0% 26        0% 59        0% 181349    0% 122050    0%
server_caps  delegreturn  getacl       setacl       fs_locations rel_lkowner
78        0% 4042881  17% 33363     0% 33038     0% 0         0% 11829     0%
secinfo      exchange_id  create_ses   destroy_ses  sequence     get_lease_t
0         0% 0         0% 0         0% 0         0% 0         0% 0         0%
reclaim_comp layoutget    getdevinfo   layoutcommit layoutreturn getdevlist
0         0% 0         0% 0         0% 0         0% 0         0% 0         0%
(null)
0         0%
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