つぶねこ

　4.5k

　まぁ何はともあれ、手近にゃところから手をつけてみる。
　
　aptitude install samba krb5-config krb5-user 他
　/etc/resolv.conf

search neko.local
ip_of_ad1_with_dns
ip_of_ad2_with_dns

　この辺は微妙。既にDNSの建ってるAD鯖があるにゃらそれでいいんじゃにゃいの、というわけにゃんだが、何とにゃれば/etc/hostsで正逆引き出来るようにAD鯖や自鯖を登録しておく必要があるかも知れにゃい。
　
　/etc/krb5.conf

[libdefaults]
	default_realm = NEKO.LOCAL
[realms]
	NEKO.LOCAL = {
		kdc = ad1.neko.local
	}
[domain_realms]
	.neko.local = NEKO.LOCAL

　domain_realmsの設定は無くても動く気がする。ていうかこれで合ってるのかしら？ケロちゃんのお勉強せずに使って大丈夫にゃのかしら？
　
　/etc/samba/smb.conf

security = ADS
ads server = ad1.neko.local
realm = NEKO.LOCAL
add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u

　kinit dom_admin_name@NEKO.LOCAL
　net ads join
　/etc/init.d/samba restart
　これでWinドメインからtest01/domain_passでログオン出来るようににゃる。
　意外と簡単。
　linux側のユーザアカウントは自動生成される。ちょっとどうかにゃーって気はするのでWinbindとかと組み合わせる手もあるらしい。

　3.5k

　久々にローカルファイル鯖＠linuxのupdateをしたらカーネルが入ったのでついでに再起動。
　そしたらいつまで待っても帰ってこにゃい。どこで凍ったのか・・・
　
　というわけで帰宅してモニタさがして繋げてKBさがしてつっこんで、えらい苦労して画面読んだところ、にゃんか/dev/sdbをmountしようとして云々、というところでinitramfsで止まってた。/が見あたらねえってことらしい。えーっと？
　というわけで/dev/md2を/tmpとかにmountして/boot/grub/menu.lstを覗いてみれば、いつのまーにか /vmlinuz-2.6.18-5-686 root=/dev/sda2 roとかににゃってるし。そこは/dev/md2にしたはずだが・・・
　ひとまず書き換えて再起動して問題は解決したが、原因が分からず。やだにゃあ

　3.5k

　何事もメモである。というわけで
　まずはLinuxシングルドライブreiserfs

tiobench --numruns 4 --dir /mnt/sdb/ --threads 1
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 1 -f 1792 -r 4000 -b 4096 -d /mnt/sdb/ -T
Unit information
================
File size = megabytes
Blk Size  = bytes
Rate      = megabytes per second
CPU%      = percentage of CPU used during the test
Latency   = milliseconds
Lat%      = percent of requests that took longer than X seconds
CPU Eff   = Rate divided by CPU% - throughput per cpu load
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    1   58.62 14.67%     0.262      456.28   0.00000  0.00000   399
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    1    0.67 0.854%    23.396      651.18   0.00000  0.00000    78
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    1   52.14 40.04%     0.254    14168.86   0.00044  0.00000   130
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    1    1.78 0.774%     0.157       24.73   0.00000  0.00000   230

tiobench --numruns 4 --dir /mnt/sdb/ --threads 2
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 2 -f 896 -r 2000 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    2   42.31 20.77%     0.730     1403.99   0.00000  0.00000   204
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    2    0.70 0.820%    43.787      579.55   0.00000  0.00000    86
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    2   43.38 86.91%     0.605    19488.65   0.00132  0.00000    50
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    2    1.77 2.107%     0.258      203.21   0.00000  0.00000    84

tiobench --numruns 4 --dir /mnt/sdb/ --threads 4
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 4 -f 448 -r 1000 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    4   27.42 26.18%     2.242     3291.54   0.00000  0.00000   105
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    4    0.68 1.536%    87.880      814.29   0.00000  0.00000    44
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    4   34.86 166.0%     1.423    21004.12   0.00392  0.00000    21
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    4    1.61 3.344%     3.710     1147.34   0.00000  0.00000    48

tiobench --numruns 4 --dir /mnt/sdb/ --threads 8
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 8 -f 224 -r 500 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    8   24.03 44.76%     5.057     5837.55   0.00000  0.00000    54
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    8    0.80 2.896%   147.462     1021.28   0.00000  0.00000    28
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    8   33.91 321.8%     2.750    25215.68   0.02638  0.00000    11
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.15-060225-1               1792  4096    8    1.68 9.160%     0.249       17.55   0.00000  0.00000    18

　続いてmdによるRAID5、SATA4台のreiserfs場合～

tiobench --numruns 4 --dir /home/ --threads 1
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 1 -f 1022 -r 4000 -b 4096 -d /home/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    1   71.29 63.59%     0.217      218.35   0.00000  0.00000   112
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    1    1.04 1.208%    15.055      141.74   0.00000  0.00000    86
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    1   43.95 39.86%     0.352     3810.52   0.00000  0.00000   110
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    1    1.43 0.760%     0.084       30.02   0.00000  0.00000   188

tiobench --numruns 4 --dir /home/ --threads 2
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 2 -f 511 -r 2000 -b 4096 -d /home/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    2   65.50 96.41%     0.464      764.62   0.00000  0.00000    68
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    2    1.50 2.681%    18.618      214.08   0.00000  0.00000    56
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    2   45.45 82.75%     0.670     6621.71   0.00076  0.00000    55
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    2    1.16 1.057%     0.124      145.55   0.00000  0.00000   110

tiobench --numruns 4 --dir /home/ --threads 4
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 4 -f 255 -r 1000 -b 4096 -d /home/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    4   62.78 140.0%     0.947     1177.52   0.00000  0.00000    45
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    4    2.18 5.916%    27.001      233.06   0.00000  0.00000    37
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    4   46.23 166.5%     1.189     7490.56   0.00192  0.00000    28
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    4    1.22 2.567%     0.521      486.34   0.00000  0.00000    47

tiobench --numruns 4 --dir /home/ --threads 8
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 8 -f 127 -r 500 -b 4096 -d /home/ -T
Sequential Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    8   61.42 231.0%     1.860     8310.28   0.00115  0.00000    27
Random Reads
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    8    2.73 14.09%    39.358      403.94   0.00000  0.00000    19
Sequential Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    8   47.39 328.6%     2.192    19993.01   0.00922  0.00000    14
Random Writes
                              File  Blk   Num                   Avg      Maximum      Lat%     Lat%    CPU
Identifier                    Size  Size  Thr   Rate  (CPU%)  Latency    Latency      >2s      >10s    Eff
---------------------------- ------ ----- ---  ------ ------ --------- -----------  -------- -------- -----
2.6.18-5-486                  1022  4096    8    1.13 5.121%     8.045     8028.87   0.07500  0.00000    22

　もちろん各種チューニングによって結果は変わるはず。
　と、しかしこれは、IOzoneみたいにグラフ化しにゃいと実に見にくいにゃ(しろよ)
　ひとまず、SATAシングルドライブで同時2本程度は結構持つものの、4本ににゃった時点でかにゃり酷いことに。RAID5にしておけば、4本程度まではまず問題にゃいっていうかLatencyが低いまま押さえられてて負荷に強いことが見て取れる。
　あとはRAID10をいろんにゃオプションで生成して実験してみるべきにゃんだがめんどくさいよにゃぁ