ICH10R + dmraidでRAID1を組む
ICH10R入りM/Bに1TBのHDD２発なので、お決まりのやつを(^^ゞ
なんだかdmraidのパッケージにはあまり情報が無くて、まあ実際こんな感じなんだが。ちょっと投げやりすぐる...。
# rpm -ql dmraid /sbin/dmraid /sbin/dmraid.static /usr/lib64/libdmraid.so.1.0.0.rc13 /usr/share/doc/dmraid-1.0.0.rc13 /usr/share/doc/dmraid-1.0.0.rc13/CHANGELOG /usr/share/doc/dmraid-1.0.0.rc13/CREDITS /usr/share/doc/dmraid-1.0.0.rc13/KNOWN_BUGS /usr/share/doc/dmraid-1.0.0.rc13/LICENSE /usr/share/doc/dmraid-1.0.0.rc13/LICENSE_GPL /usr/share/doc/dmraid-1.0.0.rc13/LICENSE_LGPL /usr/share/doc/dmraid-1.0.0.rc13/README /usr/share/doc/dmraid-1.0.0.rc13/TODO /usr/share/doc/dmraid-1.0.0.rc13/dmraid_design.txt /usr/share/man/man8/dmraid.8.gz /var/lock/dmraid
うーんプロプラでは無いから、まあコードを見ろ、そんな難しいことやってないよ、ドイツの科学力は世界一ぃぃぃ、って感じなんだろ、と。えーと、とりあえず、-sしろと。で、Activateするには-ayだと。
# dmraid -s *** Group superset isw_cgejcgagfj --> Subset name : isw_cgejcgagfj_Vol0 size : 1953519616 stride : 128 type : mirror status : ok subsets: 0 devs : 2 spares : 0 # dmraid -ay RAID set "isw_cgejcgagfj_Vol0" was activated # ll /dev/mapper/ total 0 brw-rw---- 1 root disk 253, 1 Nov 29 22:31 VolGroup01-LogVol00 brw-rw---- 1 root disk 253, 0 Nov 29 22:31 VolGroup01-LogVol01 crw------- 1 root root 10, 63 Nov 29 22:31 control brw-rw---- 1 root disk 253, 2 Nov 29 22:32 isw_cgejcgagfj_Vol0
あー、デバイスノードが出来てら。ちゅうことは、fdiskするか、pvcreate/vgcreate/lvcreateするかだわな。とりあえずLVMで。
# fdisk /dev/mapper/isw_cgejcgagfj_Vol0 Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. The number of cylinders for this disk is set to 121600. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-121600, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-121600, default 121600): Using default value 121600 Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 22: Invalid argument. The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks. # partprobe /dev/mapper/isw_cgejcgagfj_Vol0 # ll /dev/mapper/isw_cgejcgagfj_Vol0* brw-rw---- 1 root disk 253, 2 Nov 29 22:33 /dev/mapper/isw_cgejcgagfj_Vol0 brw-rw---- 1 root disk 253, 3 Nov 29 22:33 /dev/mapper/isw_cgejcgagfj_Vol0p1 # pvcreate /dev/mapper/isw_cgejcgagfj_Vol0p1 Physical volume "/dev/mapper/isw_cgejcgagfj_Vol0p1" successfully created # vgcreate -s 32M VolGroup00 /dev/mapper/isw_cgejcgagfj_Vol0p1 Volume group "VolGroup00" successfully created # vgdisplay --- Volume group --- VG Name VolGroup01 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 74.31 GB PE Size 32.00 MB Total PE 2378 Alloc PE / Size 2378 / 74.31 GB Free PE / Size 0 / 0 VG UUID kcEq05-mAM4-CEQ4-z9t6-HYDm-9Vrs-zvvw5v --- Volume group --- VG Name VolGroup00 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 1 VG Access read/write VG Status resizable MAX LV 0 Cur LV 0 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 931.50 GB PE Size 32.00 MB Total PE 29808 Alloc PE / Size 0 / 0 Free PE / Size 29808 / 931.50 GB VG UUID iLmukb-Sq3i-buph-6doM-kkGq-SoW3-jedrfH # lvcreate -l 29808 -n LogVol00 VolGroup00 Logical volume "LogVol00" created # lvdisplay --- Logical volume --- LV Name /dev/VolGroup01/LogVol01 VG Name VolGroup01 LV UUID LI52WN-bwWq-rsme-9YG5-Ko10-n7tJ-0yt4E8 LV Write Access read/write LV Status available # open 1 LV Size 72.31 GB Current LE 2314 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Name /dev/VolGroup01/LogVol00 VG Name VolGroup01 LV UUID cTWWR8-Npzf-A2ve-BKJQ-DP9O-zyA3-lSWkXz LV Write Access read/write LV Status available # open 1 LV Size 2.00 GB Current LE 64 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 --- Logical volume --- LV Name /dev/VolGroup00/LogVol00 VG Name VolGroup00 LV UUID 0DTn9b-deMD-hv3l-JePf-XOfW-B1hQ-tmMEG0 LV Write Access read/write LV Status available # open 0 LV Size 931.50 GB Current LE 29808 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:4
ま、あとは、mke2fsしてfstabに書けばオッケーだろ。
# mke2fs -j /dev/VolGroup00/LogVol00 mke2fs 1.39 (29-May-2006) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 122093568 inodes, 244187136 blocks 12209356 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 7452 block groups 32768 blocks per group, 32768 fragments per group 16384 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 29 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
念のため、iostatを確認。書けてるみたいだし。
# partprobe /dev/sda /dev/sdb
# iostat
Linux 2.6.18-120.el5 (rhel5.rio.st) 11/29/08
avg-cpu: %user %nice %system %iowait %steal %idle
0.58 0.14 4.24 14.82 0.00 80.21
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 43.42 4.22 43091.95 2486 25411751
sda1 26.76 0.29 27359.45 170 16134144
sdb 46.54 4.24 43312.50 2499 25541815
sdb1 22.81 0.19 21382.59 114 12609528
sdc 25.96 771.38 103.56 454892 61070
sdc1 0.28 21.00 0.02 12386 14
sdc2 25.65 749.90 103.54 442226 61056
dm-0 41.45 746.74 103.54 440362 61056
dm-1 0.21 1.64 0.00 968 0
dm-2 6526.75 1.42 52207.40 837 30787223
dm-3 6526.07 0.35 52207.38 209 30787215
dm-4 6525.94 0.18 52207.36 104 30787200
おっと、忘れてた、mkinitdしておこう。
# mkinitrd -v ./initrd-2.6.18-120.el5.img `uname -r` Creating initramfs Looking for deps of module ehci-hcd Looking for deps of module ohci-hcd Looking for deps of module uhci-hcd Looking for deps of module ext3: jbd Looking for deps of module jbd Looking for driver for device sdc2 Looking for deps of module pci:v00008086d00002822sv00001043sd000082D4bc01sc04i00: scsi_mod libata ahci Looking for deps of module scsi_mod Looking for deps of module sd_mod: scsi_mod Looking for deps of module libata: scsi_mod Looking for deps of module ahci: scsi_mod libata Looking for deps of module usb-storage: scsi_mod Looking for deps of module ide-disk Looking for deps of module dm-mod Looking for deps of module dm-mirror: dm-mod dm-log Looking for deps of module dm-log: dm-mod Looking for deps of module dm-zero: dm-mod Looking for deps of module dm-snapshot: dm-mod Using modules: /lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/ehci-hcd.ko /lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/ohci-hcd.ko /lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/uhci-hcd.ko /lib/modules/2.6.18-120.el5/kernel/fs/jbd/jbd.ko /lib/modules/2.6.18-120.el5/kernel/fs/ext3/ext3.ko /lib/modules/2.6.18-120.el5/kernel/drivers/scsi/scsi_mod.ko /lib/modules/2.6.18-120.el5/kernel/drivers/scsi/sd_mod.ko /lib/modules/2.6.18-120.el5/kernel/drivers/ata/libata.ko /lib/modules/2.6.18-120.el5/kernel/drivers/ata/ahci.ko /lib/modules/2.6.18-120.el5/kernel/drivers/usb/storage/usb-storage.ko /lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-mod.ko /lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-log.ko /lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-mirror.ko /lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-zero.ko /lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-snapshot.ko /sbin/nash -> /tmp/initrd.XL3918/bin/nash /sbin/insmod.static -> /tmp/initrd.XL3918/bin/insmod copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/ehci-hcd.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/ehci-hcd.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/ohci-hcd.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/ohci-hcd.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/usb/host/uhci-hcd.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/uhci-hcd.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/fs/jbd/jbd.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/jbd.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/fs/ext3/ext3.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/ext3.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/scsi/scsi_mod.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/scsi_mod.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/scsi/sd_mod.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/sd_mod.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/ata/libata.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/libata.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/ata/ahci.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/ahci.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/usb/storage/usb-storage.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/usb-storage.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-mod.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/dm-mod.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-log.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/dm-log.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-mirror.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/dm-mirror.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-zero.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/dm-zero.ko' [elf64-x86-64] copy from `/lib/modules/2.6.18-120.el5/kernel/drivers/md/dm-snapshot.ko' [elf64-x86-64] to `/tmp/initrd.XL3918/lib/dm-snapshot.ko' [elf64-x86-64] /sbin/lvm.static -> /tmp/initrd.XL3918/bin/lvm /etc/lvm -> /tmp/initrd.XL3918/etc/lvm `/etc/lvm/lvm.conf' -> `/tmp/initrd.XL3918/etc/lvm/lvm.conf' /sbin/dmraid.static -> /tmp/initrd.XL3918/bin/dmraid /sbin/kpartx.static -> /tmp/initrd.XL3918/bin/kpartx Adding module ehci-hcd Adding module ohci-hcd Adding module uhci-hcd Adding module jbd Adding module ext3 Adding module scsi_mod Adding module sd_mod Adding module libata Adding module ahci Adding module usb-storage Adding module dm-mod Adding module dm-log Adding module dm-mirror Adding module dm-zero Adding module dm-snapshot
で、bonnie++の結果。elevator=deadline
# cat hdd_raid1_deadline.txt
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
hoge 15840M 63611 86 110109 23 46607 7 55845 74 109488 7 231.3 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 43722 95 429304 99 93985 99 44614 94 573950 98 97756 100
hoge,15840M,63611,86,110109,23,46607,7,55845,74,109488,7,231.3,0,16,43722,95,429304,99,93985,99,44614,94,573950,98,97756,100
ありゃ、意外と悪くないかも。
追記：リブートしたら自動的にアクティベートされてないなと。initの処理がおかしいみたいで、lvm2_monitorがduplicateしたidが何ちゃら言ってくる。えーと、mkinitrdだな、これ。
1672 if [ "$withdmraid" == "1" ]; then
1673 emit "echo Scanning and configuring dmraid supported devices"
1674 for x in $(/sbin/dmraid.static -ay -i -p -t 2>/dev/null | \
1675 egrep -iv "^no " | awk -F ':' '{ print $1 }') ; do
1676 dmname=$(resolve_dm_name $x)
1677 [ -z "$dmname" ] && continue
1678 # emit "dmraid -ay -i -p \"$dmname\""
1679 emit "dmraid -ay -i -p"
1680 emit "kpartx -a -p p \"/dev/mapper/$dmname\""
1681 done
1682 fi
1678行目をコメントアウトしてみたけれど、やはり直らない。というか、initにemitされない。[ -z ]テストがうまくいってない？
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