{"id":19235,"date":"2016-07-21T06:01:27","date_gmt":"2016-07-20T22:01:27","guid":{"rendered":"https:\/\/2blog.ilc.edu.tw\/25793\/2016\/07\/21\/%e5%9c%a8-debian-linux-%e5%bb%ba%e7%ab%8b-raid-5\/"},"modified":"2021-03-18T17:24:46","modified_gmt":"2021-03-18T09:24:46","slug":"%e5%9c%a8-debian-linux-%e5%bb%ba%e7%ab%8b-raid-5","status":"publish","type":"post","link":"https:\/\/2blog.ilc.edu.tw\/25793\/2016\/07\/21\/%e5%9c%a8-debian-linux-%e5%bb%ba%e7%ab%8b-raid-5\/","title":{"rendered":"\u5728 Debian Linux \u5efa\u7acb RAID 5"},"content":{"rendered":"

\u53c3\u8003\u7db2\u9801\uff1a
Creating RAID 5 (Striping with Distributed Parity) in Linux – Part 4<\/a>
Debian RAID-5 (\u6548\u80fd\u8207\u5099\u4efd) | JR \u7684\u7db2\u8def\u65e5\u8a8c<\/a>
<\/a>[\u7b46\u8a18]Linux \u8edf\u9ad4 RAID 5 \u5be6\u4f5c @ Paul’s Blog :: \u75de\u5ba2\u90a6 PIXNET ::<\/a>
OS\uff1aDebian Linux 5.8.0 <\/span>
HDD\uff1a<\/span>
10G*1 Debian Linux System<\/span>
20G *4 (\/dev\/sdb,sdc,sdd,sde)<\/span> <\/p>\n

1. \u5b89\u88dd mdadm \u5957\u4ef6
# apt-get install mdadm<\/span>
\"\" <\/a>
\"\" <\/a><\/p>\n

[@more@]2. \u67e5\u770b\u76ee\u524d\u78c1\u789f\u72c0\u614b
# fdisk -l | grep ‘^Disk \/dev’<\/span>
Disk \/dev\/sdb: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
Disk \/dev\/sdc: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
Disk \/dev\/sdd: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
Disk \/dev\/sda: 10 GiB, 10737418240 bytes, 20971520 sectors<\/span>
Disk \/dev\/sde: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span> <\/p>\n

3. \u5efa\u7acb\u78c1\u789f\u5206\u5272\u5340
# fdisk \/dev\/sdb<\/span>
\"\" <\/a> <\/p>\n

\"\" <\/a>
\u4e0d\u4e00\u5b9a\u8981\u66f4\u6539\u6210 fd<\/span>
 \"\" <\/a>
\u91cd\u8907\u4e0a\u9762\u7684\u52d5\u4f5c\uff0c\u5b8c\u6210\u6240\u6709\u7684\u78c1\u789f
# fdisk \/dev\/sdc<\/span>
# fdisk \/dev\/sdd<\/span>
# fdisk \/dev\/sde<\/span> <\/p>\n

4. \u5efa\u7acb \/dev\/md0 \u78c1\u789f\u9663\u5217\u5206\u5272\u5340
# mdadm –create \/dev\/md0 –level=5 –raid-devices=4 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1 \/dev\/sde1<\/span>
\u6216
# mdadm -C \/dev\/md0 -l=5 -n=4 \/dev\/sd[b-e]1<\/span>
mdadm: Defaulting to version 1.2 metadata<\/span>
mdadm: array \/dev\/md0 started.<\/span><\/p>\n

5. \u67e5\u770b\u5efa\u7f6e\u7d50\u679c
# fdisk -l | grep \/dev\/md0<\/span>
Disk \/dev\/md0: 60<\/span> GiB, 64371032064 bytes, 125724672 sectors<\/span><\/p>\n

# mdadm –detail \/dev\/md0<\/span>
\/dev\/md0:<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Version : 1.2<\/span>
\u00a0 Creation Time : Mon Jun 27 19:12:21 2016<\/span>
\u00a0\u00a0\u00a0\u00a0 Raid Level : raid5<\/span>
\u00a0\u00a0\u00a0\u00a0 Array Size : 62862336 (59.95 GiB 64.37 GB)<\/span>
\u00a0 Used Dev Size : 20954112 (19.98 GiB 21.46 GB)<\/span>
\u00a0\u00a0 Raid Devices : 4<\/span>
\u00a0 Total Devices : 4<\/span>
\u00a0\u00a0\u00a0 Persistence : Superblock is persistent<\/span><\/p>\n

\u00a0\u00a0\u00a0 Update Time : Mon Jun 27 19:14:47 2016<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State : clean, degraded, recovering<\/span>
\u00a0Active Devices : 3<\/span>
Working Devices : 4<\/span>
\u00a0Failed Devices : 0<\/span>
\u00a0 Spare Devices : 1<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Layout : left-symmetric<\/span>
\u00a0\u00a0\u00a0\u00a0 Chunk Size : 512K<\/span><\/p>\n

\u00a0Rebuild Status : 40% complete<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Name : debian:0\u00a0 (local to host debian)<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 UUID : 432ac899:b8c0fceb:26f9df48:bba894aa<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Events : 7<\/span><\/p>\n

\u00a0\u00a0\u00a0 Number\u00a0\u00a0 Major\u00a0\u00a0 Minor\u00a0\u00a0 RaidDevice State<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 17\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 active sync\u00a0\u00a0 \/dev\/sdb1<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 33\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\u00a0\u00a0\u00a0\u00a0\u00a0 active sync\u00a0\u00a0 \/dev\/sdc1<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 49\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2\u00a0\u00a0\u00a0\u00a0\u00a0 active sync\u00a0\u00a0 \/dev\/sdd1<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 65\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\u00a0\u00a0\u00a0\u00a0\u00a0 spare rebuilding\u00a0\u00a0 \/dev\/sde1<\/span><\/p>\n

6. \u683c\u5f0f\u5316\u5206\u5272\u5340
# mkfs -t ext4 \/dev\/md0<\/span>
Creating filesystem with 15715584 4k blocks and 3932160 inodes<\/span>
Filesystem UUID: c416cc70-98ea-4eb5-b997-b93fd2410d35<\/span>
Superblock backups stored on blocks:<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4096000, 7962624, 11239424<\/span><\/p>\n

Allocating group tables: done<\/span>
Writing inode tables: done<\/span>
Creating journal (32768 blocks): done<\/span>
Writing superblocks and filesystem accounting information: done<\/span><\/p>\n

7. \u5efa\u7acb\u639b\u8f09\u76ee\u9304\u4e26\u639b\u8f09
# mkdir \/mnt\/raid5<\/span>
# mount \/dev\/md0 \/mnt\/raid5<\/span>
# df -h<\/span>
Filesystem\u00a0\u00a0\u00a0\u00a0\u00a0 Size\u00a0 Used Avail Use% Mounted on<\/span>
\/dev\/sda1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 9.3G\u00a0 1.1G\u00a0 7.8G\u00a0 12% \/<\/span>
udev\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10M\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0 10M\u00a0\u00a0 0% \/dev<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 400M\u00a0 5.9M\u00a0 394M\u00a0\u00a0 2% \/run<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 999M\u00a0\u00a0\u00a0\u00a0 0\u00a0 999M\u00a0\u00a0 0% \/dev\/shm<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5.0M\u00a0\u00a0\u00a0\u00a0 0\u00a0 5.0M\u00a0\u00a0 0% \/run\/lock<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 999M\u00a0\u00a0\u00a0\u00a0 0\u00a0 999M\u00a0\u00a0 0% \/sys\/fs\/cgroup<\/span>
\/dev\/md0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 59G\u00a0\u00a0 52M\u00a0\u00a0 56G\u00a0\u00a0 1% \/mnt\/raid5<\/span><\/p>\n

8. \u67e5\u770b\u786c\u789f\u7684 UUID
# blkid | grep \/dev\/md0
\/dev\/md0: UUID=”c416cc70-98ea-4eb5-b997-b93fd2410d35″ TYPE=”ext4″<\/span>
<\/span>
9. \u4fee\u6539 \/etc\/fstab<\/span>
# vim \/etc\/fstab<\/span>
\u52a0\u5165\u4e0b\u9762\u4e00\u884c
UUID=c416cc70-98ea-4eb5-b997-b93fd2410d35 \/mnt\/raid5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ext4\u00a0\u00a0\u00a0 errors=remount-ro 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0<\/span><\/p>\n

10.\u7de8\u8f2f \/etc\/mdadm\/mdadm.conf<\/span>\u00a0 \u8a2d\u5b9a\u6a94
# mdadm –detail –scan –verbose >> \/etc\/mdadm\/mdadm.conf<\/span>
ARRAY \/dev\/md0 level=raid5 num-devices=4 metadata=1.2 name=debian:0 UUID=432ac899:b8c0fceb:26f9df48:bba894aa<\/span>
\u00a0\u00a0 devices=\/dev\/sdb1,\/dev\/sdc1,\/dev\/sdd1,\/dev\/sde1<\/span><\/p>\n

11. \u78c1\u789f\u5206\u5272\u8cc7\u8a0a
# fdisk -l | grep \/dev\/sd<\/span>
Disk \/dev\/sdb: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
\/dev\/sdb1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2048 41943039 41940992\u00a0 20G fd Linux raid autodetect<\/span><\/span>
Disk \/dev\/sda: 10 GiB, 10737418240 bytes, 20971520 sectors<\/span>
\/dev\/sda1\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2048 20013055 20011008\u00a0 9.6G 83 Linux<\/span>
\/dev\/sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 20015102 20969471\u00a0\u00a0 954370\u00a0 466M\u00a0 5 Extended<\/span>
\/dev\/sda5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 20015104 20969471\u00a0\u00a0 954368\u00a0 466M 82 Linux swap \/ Solaris<\/span>
Disk \/dev\/sdc: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
\/dev\/sdc1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2048 41943039 41940992\u00a0 20G fd Linux raid autodetect<\/span><\/span>
Disk \/dev\/sdd: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
\/dev\/sdd1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2048 41943039 41940992\u00a0 20G fd Linux raid autodetect<\/span><\/span>
Disk \/dev\/sde: 20 GiB, 21474836480 bytes, 41943040 sectors<\/span>
\/dev\/sde1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2048 41943039 41940992\u00a0 20G fd Linux raid autodetect<\/span><\/span><\/p>\n

12. \u6aa2\u67e5\u662f\u5426\u6709\u6b63\u78ba\u639b\u8f09
# df -h
<\/span>Filesystem\u00a0\u00a0\u00a0\u00a0\u00a0 Size\u00a0 Used Avail Use% Mounted on<\/span>
\/dev\/sda1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 9.3G\u00a0 1.1G\u00a0 7.8G\u00a0 12% \/<\/span>
udev\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10M\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0 10M\u00a0\u00a0 0% \/dev<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 400M\u00a0 5.9M\u00a0 394M\u00a0\u00a0 2% \/run<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 999M\u00a0\u00a0\u00a0\u00a0 0\u00a0 999M\u00a0\u00a0 0% \/dev\/shm<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5.0M\u00a0\u00a0\u00a0\u00a0 0\u00a0 5.0M\u00a0\u00a0 0% \/run\/lock<\/span>
tmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 999M\u00a0\u00a0\u00a0\u00a0 0\u00a0 999M\u00a0\u00a0 0% \/sys\/fs\/cgroup<\/span>
\/dev\/md0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 59G\u00a0\u00a0 52M\u00a0\u00a0 56G\u00a0\u00a0 1% \/mnt\/raid5<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u53c3\u8003\u7db2\u9801\uff1a Creating RAID 5 (Striping with Distributed Parity … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008\u5728 Debian Linux \u5efa\u7acb RAID 5\u3009<\/span><\/a><\/p>\n","protected":false},"author":55,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[179,104],"tags":[],"class_list":["post-19235","post","type-post","status-publish","format-standard","hentry","category-c-87877","category-c-98643"],"meta_key":{"_pingme":["1"],"_encloseme":["1"],"lt_post_id":["648631"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19235"}],"collection":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/comments?post=19235"}],"version-history":[{"count":1,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19235\/revisions"}],"predecessor-version":[{"id":20796,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19235\/revisions\/20796"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/media?parent=19235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/categories?post=19235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/tags?post=19235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}