Actions
ZFSな話¶
SunOSでUNIXの世界に入っておきながらいまだにZFSを経験してないのは人として何かがおかしい!! ……………と以前から思っていたわけですよ。で、そんな人間がとりあえず機材を揃えてやってみた、というお話。
※この項目は(他のペイジ同様)書きかけです。逐次、補足していきます。
背景¶
もう少し真面目に語りますと、今までML110G6にSATAなディスクを3個ほど接続、VMWare ESXi上で各種サービス用の仮想マシンを動かしていたわけなのですが、ここ数年の夏の猛暑を乗り越えて、もうそろそろ機材交換の時期に来ているのではないかな、というのが発端です。で、どうせやるなら追加発注したML110G7やら、某方面からお借りしている10GbEなNIC、某実験用にまとめ買いした3TBytesのHDD x3があるので、こいつをストレージサーバにしてみようか、と考えた次第です。
材料¶
1. ハードウェア¶
だいたいこんな構成です;
- ML110G7
- メモリ: 32GBytes
- HDD: Seagate ST3000DM001 x3
- SSD: Intel SSDSC2CT180A4 x1
2. OS¶
OpenIndiana 151a8
ZFS¶
なにしろ初挑戦なのであっちこっちのWebペイジを手繰りながらやってます。なので、(いつものことですが)正しさは保証できません…。
疑問1. ZILとL2ARCは同一SSD上で共存できるか?¶
答え: 可能。そういう風にスライスを切ってやればよろしい( http://constantin.glez.de/blog/2011/02/frequently-asked-questions-about-flash-memory-ssds-and-zfs#both )。うーん。zpoolコマンドの指定の仕方を見ていれば、そりゃそうだろうなぁ、とは思った次第です。
んで実際には以下の様にしました。
root@openindiana:/home/yukikaze# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c4t0d0 <ATA-ST3000DM001-9YN1-CC4H-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@0,0
1. c4t1d0 <ATA-ST3000DM001-9YN1-CC4B-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@1,0
2. c4t2d0 <ATA-ST3000DM001-9YN1-CC4H-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@2,0
3. c4t4d0 <ATA-INTEL SSDSC2CT18-335t-167.68GB>
/pci@0,0/pci103c,330d@1f,2/disk@4,0
Specify disk (enter its number): 3
selecting c4t4d0
[disk formatted]
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
inquiry - show vendor, product and revision
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
expand - expand label to use whole disk
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> 0
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 167.67GB 351635470
Enter partition id tag[usr]:
Enter partition permission flags[wm]: ^C
partition> disk
`disk' is not expected.
partition> exit
`exit' is not expected.
partition> quit
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
inquiry - show vendor, product and revision
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> disk
AVAILABLE DISK SELECTIONS:
0. c4t0d0 <ATA-ST3000DM001-9YN1-CC4H-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@0,0
1. c4t1d0 <ATA-ST3000DM001-9YN1-CC4B-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@1,0
2. c4t2d0 <ATA-ST3000DM001-9YN1-CC4H-2.73TB>
/pci@0,0/pci103c,330d@1f,2/disk@2,0
3. c4t4d0 <ATA-INTEL SSDSC2CT18-335t-167.68GB>
/pci@0,0/pci103c,330d@1f,2/disk@4,0
Specify disk (enter its number)[3]: 3
selecting c4t4d0
[disk formatted]
format> p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
expand - expand label to use whole disk
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> l
Ready to label disk, continue? no
partition> p
Current partition table (original):
Total disk sectors available: 351635437 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 167.67GB 351635470
1 unassigned wm 0 0 0
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 351635471 8.00MB 351651854
partition> ?
Expecting one of the following: (abbreviations ok):
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
expand - expand label to use whole disk
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> 0
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 167.67GB 351635470
Enter partition id tag[usr]:
Enter partition permission flags[wm]:
Enter new starting Sector[256]:
Enter partition size[351635215b, 351635470e, 171696mb, 167gb, 0tb]: 16g
partition> p
Current partition table (unnamed):
Total disk sectors available: 351635437 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 16.00GB 33554687
1 unassigned wm 0 0 0
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 351635471 8.00MB 351651854
partition> 1
Part Tag Flag First Sector Size Last Sector
1 unassigned wm 0 0 0
Enter partition id tag[usr]:
Enter partition permission flags[wm]:
Enter new starting Sector[33554688]:
Enter partition size[0b, 33554687e, 0mb, 0gb, 0tb]: 64gb
partition> p
Current partition table (unnamed):
Total disk sectors available: 351635437 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 16.00GB 33554687
1 usr wm 33554688 64.00GB 167772415
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 351635471 8.00MB 351651854
partition> ?
Expecting one of the following: (abbreviations ok):
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
expand - expand label to use whole disk
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
!<cmd> - execute <cmd>, then return
quit
partition> label
Ready to label disk, continue? yes
partition> p
Current partition table (unnamed):
Total disk sectors available: 351635437 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm 256 16.00GB 33554687
1 usr wm 33554688 64.00GB 167772415
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 351635471 8.00MB 351651854
partition> quit
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
inquiry - show vendor, product and revision
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> quit
root@openindiana:/home/yukikaze#
まあ、若干余計なゴミが残っていますが。
疑問2. プール? ってのはどんな風にしてつくればいいのん?¶
こちらは簡単。以下の通り。
root@openindiana:/home/yukikaze# zpool create tank raidz c4t0d0 c4t1d0 c4t2d0 log c4t4d0s0 cache c4t4d0s1
root@openindiana:/home/yukikaze# zpool status
pool: rpool1
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
rpool1 ONLINE 0 0 0
c3t0d0s0 ONLINE 0 0 0
errors: No known data errors
pool: tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
c4t0d0 ONLINE 0 0 0
c4t1d0 ONLINE 0 0 0
c4t2d0 ONLINE 0 0 0
logs
c4t4d0s0 ONLINE 0 0 0
cache
c4t4d0s1 ONLINE 0 0 0
errors: No known data errors
root@openindiana:/home/yukikaze# df -h
Filesystem Size Used Avail Use% Mounted on
rpool1/ROOT/openindiana
4.0G 1.6G 2.4G 41% /
swap 29G 352K 29G 1% /etc/svc/volatile
/usr/lib/libc/libc_hwcap1.so.1
4.0G 1.6G 2.4G 41% /lib/libc.so.1
swap 29G 8.0K 29G 1% /tmp
swap 29G 44K 29G 1% /var/run
rpool1/export 2.4G 32K 2.4G 1% /export
rpool1/export/home 2.4G 32K 2.4G 1% /export/home
rpool1/export/home/yukikaze
2.4G 36K 2.4G 1% /export/home/yukikaze
rpool1 2.4G 46K 2.4G 1% /rpool1
/export/home/yukikaze
2.4G 36K 2.4G 1% /home/yukikaze
tank 5.4T 192K 5.4T 1% /tank
root@openindiana:/home/yukikaze# ls -al /tank
total 13
drwxr-xr-x 2 root root 2 2013-10-14 08:17 .
drwxr-xr-x 25 root root 27 2013-10-14 08:17 ..
root@openindiana:/home/yukikaze#
logでZIL用の領域を指定、cacheでL2ARC用の領域を指定……で、いいらしいですよ?
Updated by Tsutomu KIMURA over 10 years ago · 1 revisions locked