{"id":19239,"date":"2016-07-25T06:46:37","date_gmt":"2016-07-24T22:46:37","guid":{"rendered":"https:\/\/2blog.ilc.edu.tw\/25793\/2016\/07\/25\/%e5%9c%a8-debian-linux-%e5%bb%ba%e7%ab%8b-raid-6-%e6%96%b0%e5%a2%9e%e4%b8%80%e9%a1%86%e5%82%99%e6%8f%b4%e7%a1%ac%e7%a2%9f\/"},"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-6-%e6%96%b0%e5%a2%9e%e4%b8%80%e9%a1%86%e5%82%99%e6%8f%b4%e7%a1%ac%e7%a2%9f","status":"publish","type":"post","link":"https:\/\/2blog.ilc.edu.tw\/25793\/2016\/07\/25\/%e5%9c%a8-debian-linux-%e5%bb%ba%e7%ab%8b-raid-6-%e6%96%b0%e5%a2%9e%e4%b8%80%e9%a1%86%e5%82%99%e6%8f%b4%e7%a1%ac%e7%a2%9f\/","title":{"rendered":"\u5728 Debian Linux \u5efa\u7acb RAID 6 – \u65b0\u589e\u4e00\u9846\u5099\u63f4\u786c\u789f"},"content":{"rendered":"

\u53c3\u8003\u7db2\u9801\uff1a
Setup RAID Level 6 (Striping with Double Distributed Parity) in Linux – Part 5<\/a> <\/p>\n

OS\uff1aDebian Linux 5.8.0 <\/span>
HDD\uff1a<\/span>
10G*1 Debian Linux System<\/span>
20G *5 (\/dev\/sdb,sdc,sdd,sde,sdf)<\/p>\n

1. \u6aa2\u8996\u76ee\u524d\u7684 RAID \u72c0\u614b
# mdadm -D \/dev\/md0<\/span>
\/dev\/md0:<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Version : 1.2<\/span>
\u00a0 Creation Time : Tue Jun 28 10:25:06 2016<\/span>
\u00a0\u00a0\u00a0\u00a0 Raid Level : raid6<\/span>
\u00a0\u00a0\u00a0\u00a0 Array Size : 41908224 (39.97 GiB 42.91 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 : Tue Jun 28 10:39:54 2016<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State : clean<\/span>
\u00a0Active Devices : 4<\/span>
Working Devices : 4<\/span>
\u00a0Failed Devices : 0<\/span>
\u00a0 Spare Devices : 0<\/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

\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 : 8f039d29:9179c09a:17a76417:e54c9dfa<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Events : 27<\/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 3\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 active sync\u00a0\u00a0 \/dev\/sde1<\/span>[@more@]2. \u5efa\u7acb \/dev\/sdf<\/span> \u78c1\u789f\u5206\u5272\u5340
# fdisk \/dev\/sdf<\/span> <\/p>\n

Welcome to fdisk (util-linux 2.25.2).<\/span>
Changes will remain in memory only, until you decide to write them.<\/span>
Be careful before using the write command.<\/span> <\/p>\n

Device does not contain a recognized partition table.<\/span>
Created a new DOS disklabel with disk identifier 0x8d30e7ab.<\/span> <\/p>\n

Command (m for help):<\/span> n<\/span>
Partition type<\/span>
\u00a0\u00a0 p\u00a0\u00a0 primary (0 primary, 0 extended, 4 free)<\/span>
\u00a0\u00a0 e\u00a0\u00a0 extended (container for logical partitions)<\/span>
Select (default p):<\/span> p<\/span>
Partition number (1-4, default 1):<\/span> 1<\/span>
First sector (2048-41943039, default 2048):<\/span> \u6309\u4e8c\u4e0b Enter \u9375<\/span><\/strong>
Last sector, +sectors or +size{K,M,G,T,P} (2048-41943039, default 41943039):<\/span> <\/p>\n

Created a new partition 1 of type ‘Linux’ and of size 20 GiB.<\/span> <\/p>\n

Command (m for help):<\/span> t<\/span>
Selected partition 1<\/span>
Hex code (type L to list all codes):<\/span> fd<\/span>
Changed type of partition ‘Linux’ to ‘Linux raid autodetect’.<\/span> <\/p>\n

Command (m for help):<\/span> wq<\/span>
The partition table has been altered.<\/span>
Calling ioctl() to re-read partition table.<\/span>
Syncing disks.<\/span> <\/p>\n

3. \u5c07 \/dev\/sdf1<\/span> \u52a0\u5165\u5230 \/dev\/md0<\/span> \u4e2d
# mdadm –add \/dev\/md0 \/dev\/sdf1<\/span>
mdadm: added \/dev\/sdf1<\/span> <\/p>\n

4. \u6aa2\u8996\u76ee\u524d\u7684 RAID \u72c0\u614b\uff0c\u591a\u4e86\u4e00\u9846<\/span> <\/span>Spare Devices
<\/span><\/span> <\/span> <\/span># mdadm -D \/dev\/md0<\/span>
<\/span> <\/span> <\/span>\/dev\/md0:<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Version : 1.2<\/span>
\u00a0 Creation Time : Tue Jun 28 10:25:06 2016<\/span>
\u00a0\u00a0\u00a0\u00a0 Raid Level : raid6<\/span>
\u00a0\u00a0\u00a0\u00a0 Array Size : 41908224 (39.97 GiB 42.91 GB)<\/span>
\u00a0 Used Dev Size : 20954112 (19.98 GiB 21.46 GB)<\/span>
\u00a0\u00a0 Raid Devices : 4<\/span>
\u00a0 Total Devices : 5<\/span>
\u00a0\u00a0\u00a0 Persistence : Superblock is persistent<\/span> <\/p>\n

\u00a0\u00a0\u00a0 Update Time : Tue Jun 28 10:44:37 2016<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State : clean<\/span>
\u00a0Active Devices : 4<\/span>
Working Devices : 5<\/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

\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 : 8f039d29:9179c09a:17a76417:e54c9dfa<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Events : 28<\/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 3\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 active sync\u00a0\u00a0 \/dev\/sde1<\/span> <\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 81\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 –\u00a0\u00a0\u00a0\u00a0\u00a0 spare\u00a0\u00a0 \/dev\/sdf1<\/span> <\/p>\n

5.<\/span> <\/span>\u6a21\u64ec \/dev\/sdd1<\/span> \u6545\u969c
# mdadm –manage –fail \/dev\/md0 \/dev\/sdd1
<\/span>#<\/span> mdadm –manage <\/span>–set-faulty<\/span>\/dev\/md0 \/dev\/sdd1<\/span>
mdadm: set \/dev\/sdd1 faulty in \/dev\/md0<\/span> <\/p>\n

6. \u6aa2\u67e5\u76ee\u524d\u7684 RAID \u72c0\u614b\uff0cRAID \u7cfb\u7d71\u6703\u81ea\u52d5\u8b93 \/dev\/sdf1<\/span> \u7522\u751f\u4f5c\u7528
# mdadm -D \/dev\/md0<\/span>
<\/span>\/dev\/md0:
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Version : 1.2
\u00a0 Creation Time : Tue Jun 28 10:25:06 2016
\u00a0\u00a0\u00a0\u00a0 Raid Level : raid6
\u00a0\u00a0\u00a0\u00a0 Array Size : 41908224 (39.97 GiB 42.91 GB)
\u00a0 Used Dev Size : 20954112 (19.98 GiB 21.46 GB)
\u00a0\u00a0 Raid Devices : 4
\u00a0 Total Devices : 5
\u00a0\u00a0\u00a0 Persistence : Superblock is persistent <\/p>\n

\u00a0\u00a0\u00a0 Update Time : Tue Jun 28 10:47:46 2016
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State : clean, degraded, recovering
\u00a0Active Devices : 3
Working Devices : 4
\u00a0Failed Devices : 1
\u00a0 Spare Devices : 1 <\/p>\n

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

\u00a0Rebuild Status : 35% complete <\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Name : debian:0\u00a0 (local to host debian)
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 UUID : 8f039d29:9179c09a:17a76417:e54c9dfa
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Events : 35 <\/p>\n

\u00a0\u00a0\u00a0 Number\u00a0\u00a0 Major\u00a0\u00a0 Minor\u00a0\u00a0 RaidDevice State
\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
\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
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 81\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2\u00a0\u00a0\u00a0\u00a0\u00a0 spare rebuilding\u00a0\u00a0 \/dev\/sdf1<\/span>
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\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 active sync\u00a0\u00a0 \/dev\/sde1 <\/p>\n

\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 –\u00a0\u00a0\u00a0\u00a0\u00a0 faulty\u00a0\u00a0 \/dev\/sdd1 <\/p>\n

#<\/span> cat \/proc\/mdstat<\/span>
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdf1[4]<\/span> sdb1[0] sde1[3] sdd1[2](F) sdc1[1]
\u00a0\u00a0\u00a0\u00a0\u00a0 41908224 blocks super 1.2 level 6, 512k chunk, algorithm 2 [4\/3] [UU_U]
\u00a0\u00a0\u00a0\u00a0\u00a0 [================>….]\u00a0 recovery = 80.8% (16943104\/20954112) finish=0.4min speed=161494K\/sec <\/p>\n

unused devices: <none> <\/p>\n

<\/span>7. <\/span><\/span>\u5c07\u6545\u969c\u7684\u786c\u789f\u79fb\u51fa
# mdadm –manage –remove \/dev\/md0 \/dev\/sdd1<\/span>
mdadm: hot removed \/dev\/sdd1 from \/dev\/md0<\/p>\n

#<\/span> cat \/proc\/mdstat<\/span>
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdf1[4] sdb1[0] sde1[3] sdc1[1]
\u00a0\u00a0\u00a0\u00a0\u00a0 41908224 blocks super 1.2 level 6, 512k chunk, algorithm 2 [4\/4] [UUUU] <\/p>\n

unused devices: <none>
<\/span><\/p>\n

8.\u4e5f\u53ef\u4ee5\u76f4\u63a5\u5728\u5efa\u7acb RAID \u6642\u76f4\u63a5\u6307\u5b9a
# mdadm –create <\/span>–verbose <\/span>\/dev\/md0 –level=6 –raid-devices=4 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1 \/dev\/sde1<\/span> -x 1 \/dev\/sdf1<\/p>\n

<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u53c3\u8003\u7db2\u9801\uff1a Setup RAID Level 6 (Striping with Double Distribu … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008\u5728 Debian Linux \u5efa\u7acb RAID 6 – \u65b0\u589e\u4e00\u9846\u5099\u63f4\u786c\u789f\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-19239","post","type-post","status-publish","format-standard","hentry","category-c-87877","category-c-98643"],"meta_key":{"_pingme":["1"],"_encloseme":["1"],"lt_post_id":["648680"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19239"}],"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=19239"}],"version-history":[{"count":1,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19239\/revisions"}],"predecessor-version":[{"id":20799,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19239\/revisions\/20799"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/media?parent=19239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/categories?post=19239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/tags?post=19239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}