informatique:linux:raid0_sous_linux
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informatique:linux:raid0_sous_linux [2012/09/13 16:06] – RAID5 pteu | informatique:linux:raid0_sous_linux [2012/11/03 00:01] – modification externe 127.0.0.1 | ||
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=====Divers===== | =====Divers===== | ||
- | |||
- | ====Monitorer son RAID==== | ||
- | |||
- | < | ||
- | cat / | ||
- | | ||
- | md1 : active raid0 sda3[0] sdb3[1] | ||
- | | ||
- | |||
- | md0 : active raid0 sda2[0] sdb2[1] | ||
- | | ||
- | |||
- | | ||
- | </ | ||
- | |||
- | On peut avoir plus de détails avec : | ||
- | < | ||
- | mdadm --detail /dev/md1 | ||
- | /dev/md1: | ||
- | | ||
- | | ||
- | Raid Level : raid0 | ||
- | Array Size : 1945696256 (1855.56 GiB 1992.39 GB) | ||
- | Raid Devices : 2 | ||
- | Total Devices : 2 | ||
- | | ||
- | | ||
- | |||
- | | ||
- | State : clean | ||
- | Active Devices : 2 | ||
- | | ||
- | Failed Devices : 0 | ||
- | Spare Devices : 0 | ||
- | |||
- | Chunk Size : 64K | ||
- | | ||
- | UUID : 9695e8d2: | ||
- | Events : 0.5 | ||
- | | ||
- | | ||
- | 0 | ||
- | 1 | ||
- | </ | ||
====Créer un volume RAID1 avec un seul disque==== | ====Créer un volume RAID1 avec un seul disque==== | ||
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... mais toujours le même problème :( | ... mais toujours le même problème :( | ||
- | N' | + | N' |
Au reboot, les disques ont été renumérotés : | Au reboot, les disques ont été renumérotés : | ||
Line 371: | Line 327: | ||
Au redémarrage le volume RAID est monté correctement \o/. | Au redémarrage le volume RAID est monté correctement \o/. | ||
+ | |||
+ | ===D' | ||
+ | |||
+ | <code bash> | ||
+ | cat / | ||
+ | Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] | ||
+ | md126 : inactive sdc[1] | ||
+ | 1953514496 blocks | ||
+ | |||
+ | md127 : active (auto-read-only) raid5 sdd[2] sdb[0] | ||
+ | 3907028992 blocks level 5, 64k chunk, algorithm 2 [3/2] [U_U] | ||
+ | |||
+ | unused devices: < | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | mdadm --examine /dev/sdb1 | ||
+ | /dev/sdb1: | ||
+ | Magic : a92b4efc | ||
+ | Version : 0.90.00 | ||
+ | UUID : cc5892bf: | ||
+ | Creation Time : Fri Aug 19 18:22:07 2011 | ||
+ | Raid Level : raid5 | ||
+ | Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) | ||
+ | Array Size : 3907023872 (3726.03 GiB 4000.79 GB) | ||
+ | Raid Devices : 3 | ||
+ | Total Devices : 3 | ||
+ | Preferred Minor : 0 | ||
+ | |||
+ | Update Time : Thu Nov 17 19:32:24 2011 | ||
+ | State : clean | ||
+ | | ||
+ | Working Devices : 3 | ||
+ | | ||
+ | Spare Devices : 0 | ||
+ | | ||
+ | | ||
+ | |||
+ | | ||
+ | Chunk Size : 64K | ||
+ | |||
+ | Number | ||
+ | this | ||
+ | |||
+ | | ||
+ | | ||
+ | | ||
+ | |||
+ | mdadm --examine /dev/sdc1 | ||
+ | /dev/sdc1: | ||
+ | Magic : a92b4efc | ||
+ | Version : 0.90.00 | ||
+ | UUID : cc5892bf: | ||
+ | Creation Time : Fri Aug 19 18:22:07 2011 | ||
+ | Raid Level : raid5 | ||
+ | Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) | ||
+ | Array Size : 3907023872 (3726.03 GiB 4000.79 GB) | ||
+ | Raid Devices : 3 | ||
+ | Total Devices : 3 | ||
+ | Preferred Minor : 0 | ||
+ | |||
+ | Update Time : Thu Nov 17 19:32:24 2011 | ||
+ | State : clean | ||
+ | | ||
+ | Working Devices : 3 | ||
+ | | ||
+ | Spare Devices : 0 | ||
+ | | ||
+ | | ||
+ | |||
+ | | ||
+ | Chunk Size : 64K | ||
+ | |||
+ | Number | ||
+ | this | ||
+ | |||
+ | | ||
+ | | ||
+ | | ||
+ | |||
+ | mdadm --examine /dev/sdd1 | ||
+ | /dev/sdd1: | ||
+ | Magic : a92b4efc | ||
+ | Version : 0.90.00 | ||
+ | UUID : cc5892bf: | ||
+ | Creation Time : Fri Aug 19 18:22:07 2011 | ||
+ | Raid Level : raid5 | ||
+ | Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) | ||
+ | Array Size : 3907023872 (3726.03 GiB 4000.79 GB) | ||
+ | Raid Devices : 3 | ||
+ | Total Devices : 3 | ||
+ | Preferred Minor : 0 | ||
+ | |||
+ | Update Time : Thu Nov 17 19:32:24 2011 | ||
+ | State : clean | ||
+ | | ||
+ | Working Devices : 3 | ||
+ | | ||
+ | Spare Devices : 0 | ||
+ | | ||
+ | | ||
+ | |||
+ | | ||
+ | Chunk Size : 64K | ||
+ | |||
+ | Number | ||
+ | this | ||
+ | |||
+ | | ||
+ | | ||
+ | | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | egrep -v " | ||
+ | DEVICE partitions | ||
+ | CREATE owner=root group=disk mode=0660 auto=yes | ||
+ | HOMEHOST < | ||
+ | MAILADDR root | ||
+ | ARRAY /dev/md0 level=raid5 num-devices=3 metadata=0.90 UUID=cc5892bf: | ||
+ | | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | mdadm --detail --scan | ||
+ | ARRAY /dev/md/0_0 metadata=0.90 UUID=c50da923: | ||
+ | ARRAY /dev/md/0_1 metadata=0.90 UUID=cb278753: | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | mdadm --stop /dev/md126 | ||
+ | | ||
+ | mdadm --stop /dev/md127 | ||
+ | | ||
+ | mdadm --assemble /dev/md0 | ||
+ | | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | mdadm --detail --scan | ||
+ | ARRAY /dev/md0 metadata=0.90 UUID=cc5892bf: | ||
+ | </ | ||
+ | |||
+ | <code bash> | ||
+ | cat / | ||
+ | Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] | ||
+ | md0 : active raid5 sdb1[0] sdd1[2] sdc1[1] | ||
+ | 3907023872 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU] | ||
+ | |||
+ | unused devices: < | ||
+ | </ | ||
+ | |||
====LVM==== | ====LVM==== | ||
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swap_1 | swap_1 | ||
</ | </ | ||
+ | |||
=====Management du raid===== | =====Management du raid===== | ||
+ | |||
+ | ====Monitorer son RAID==== | ||
+ | |||
+ | <note warning> | ||
+ | Attention les commandes qui vont suivre ne proviennent pas toutes du même RAID ! | ||
+ | </ | ||
+ | |||
+ | < | ||
+ | cat / | ||
+ | | ||
+ | md1 : active raid0 sda3[0] sdb3[1] | ||
+ | | ||
+ | |||
+ | md0 : active raid0 sda2[0] sdb2[1] | ||
+ | | ||
+ | |||
+ | | ||
+ | </ | ||
+ | |||
+ | On peut avoir plus de détails avec : | ||
+ | < | ||
+ | mdadm --detail /dev/md1 | ||
+ | /dev/md1: | ||
+ | | ||
+ | | ||
+ | Raid Level : raid0 | ||
+ | Array Size : 1945696256 (1855.56 GiB 1992.39 GB) | ||
+ | Raid Devices : 2 | ||
+ | Total Devices : 2 | ||
+ | | ||
+ | | ||
+ | |||
+ | | ||
+ | State : clean | ||
+ | Active Devices : 2 | ||
+ | | ||
+ | Failed Devices : 0 | ||
+ | Spare Devices : 0 | ||
+ | |||
+ | Chunk Size : 64K | ||
+ | | ||
+ | UUID : 9695e8d2: | ||
+ | Events : 0.5 | ||
+ | | ||
+ | | ||
+ | 0 | ||
+ | 1 | ||
+ | </ | ||
Arrêter/ | Arrêter/ | ||
Line 532: | Line 689: | ||
| | ||
</ | </ | ||
+ | |||
=====Tests et banchmarks===== | =====Tests et banchmarks===== | ||
informatique/linux/raid0_sous_linux.txt · Last modified: 2024/06/29 14:10 by pteu