informatica:linux:raid
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informatica:linux:raid [2015/08/13 11:42] – jose | informatica:linux:raid [2020/11/15 13:11] (current) – jose | ||
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For the record, here's how I do the MBR replication: | For the record, here's how I do the MBR replication: | ||
- | # grub --no-floppy | + | |
- | + | < | |
- | device (hd0) / | + | device (hd0) /dev/sda |
- | root (hd0, | + | root (hd0,0) |
setup (hd0) | setup (hd0) | ||
- | device (hd0) / | + | device (hd0) /dev/sdb |
- | root (hd0, | + | root (hd0,0) |
setup (hd0) | setup (hd0) | ||
- | device (hd0) / | + | device (hd0) /dev/sdc |
- | root (hd0, | + | root (hd0,0) |
setup (hd0) | setup (hd0) | ||
Line 93: | Line 93: | ||
* take great care that the raid1 is in sync, to insure that all the required files are in their final position on disk | * take great care that the raid1 is in sync, to insure that all the required files are in their final position on disk | ||
* thanks to grub's architecture, | * thanks to grub's architecture, | ||
+ | </ | ||
==== Cambiar un disco ==== | ==== Cambiar un disco ==== | ||
Line 99: | Line 100: | ||
Mostramos los discos que hay | Mostramos los discos que hay | ||
- | | + | cat / |
< | < | ||
Personalities : [raid1] [raid6] [raid5] [raid4] | Personalities : [raid1] [raid6] [raid5] [raid4] | ||
Line 154: | Line 155: | ||
</ | </ | ||
- | | + | mdadm --detail /dev/md1 |
< | < | ||
/dev/md1: | /dev/md1: | ||
Line 249: | Line 250: | ||
</ | </ | ||
- | | + | mdadm --detail /dev/md1 |
< | < | ||
/dev/md1: | /dev/md1: | ||
Line 320: | Line 321: | ||
9767424 blocks [3/3] [UUU] | 9767424 blocks [3/3] [UUU] | ||
- | #mdadm --detail / | + | |
- | / | + | |
- | Version : 00.90.03 | + | < |
- | Creation Time : Thu Oct 25 21:15:28 2007 \\ | + | /dev/md0: |
- | Raid Level : raid1 \\ | + | Version : 00.90.03 |
- | Array Size : 9767424 (9.31 GiB 10.00 GB) \\ | + | Creation Time : Thu Oct 25 21:15:28 2007 |
- | Device Size : 9767424 (9.31 GiB 10.00 GB) \\ | + | Raid Level : raid1 |
- | Raid Devices : 3 \\ | + | Array Size : 9767424 (9.31 GiB 10.00 GB) |
- | Total Devices : 3 \\ | + | Device Size : 9767424 (9.31 GiB 10.00 GB) |
- | | + | Raid Devices : 3 |
- | Persistence : Superblock is persistent | + | Total Devices : 3 |
+ | | ||
+ | Persistence : Superblock is persistent | ||
- | Update Time : Sat Nov 3 15:07:36 2007 \\ | + | Update Time : Sat Nov 3 15:07:36 2007 |
- | State : clean \\ | + | State : clean |
- | | + | |
- | | + | |
- | | + | |
- | Spare Devices : 0 \\ | + | Spare Devices : 0 |
- | UUID : a912d356: | + | UUID : a912d356: |
| | ||
- | Number | + | Number |
- | | + | |
- | | + | |
| | ||
+ | </ | ||
+ | Añadimos el disco: | ||
- | Añadimos el disco: \\ | + | |
- | #mdadm /dev/md0 -a / | + | mdadm: added /dev/sdb1 |
- | mdadm: added /dev/sdb1 | + | |
- | Ahora el disco aparecerà en reserva: | + | Ahora el disco aparecerà en reserva: |
servidor:~# mdadm --detail /dev/md0 | servidor:~# mdadm --detail /dev/md0 | ||
+ | < | ||
/dev/md0: | /dev/md0: | ||
Version : 00.90.03 | Version : 00.90.03 | ||
Line 381: | Line 386: | ||
| | ||
+ | </ | ||
Aumentamos el tamaño del RAID para que lo coja: | Aumentamos el tamaño del RAID para que lo coja: | ||
#mdadm --grow /dev/md0 --raid-devices=4 | #mdadm --grow /dev/md0 --raid-devices=4 | ||
+ | < | ||
md0 : active raid1 sdb1[4] sda1[0] sdd1[2] sdc1[1] | md0 : active raid1 sdb1[4] sda1[0] sdd1[2] sdc1[1] | ||
9767424 blocks [4/3] [UUU_] | 9767424 blocks [4/3] [UUU_] | ||
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[> | [> | ||
+ | </ | ||
Para que coja todo el tamaño del disco: \\ | Para que coja todo el tamaño del disco: \\ | ||
#mdadm --grow /dev/md1 --size=max | #mdadm --grow /dev/md1 --size=max | ||
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Todavía no ha cogido el filesystem todo el tamaño: | Todavía no ha cogido el filesystem todo el tamaño: | ||
#pvdisplay | #pvdisplay | ||
+ | < | ||
--- Physical volume --- | --- Physical volume --- | ||
PV Name / | PV Name / | ||
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Allocated PE 233699 | Allocated PE 233699 | ||
PV UUID | PV UUID | ||
+ | </ | ||
Le decimos que lo coja todo:\\ | Le decimos que lo coja todo:\\ | ||
# pvresize /dev/md1 | # pvresize /dev/md1 | ||
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servidor:~# pvdisplay\\ | servidor:~# pvdisplay\\ | ||
+ | < | ||
--- Physical volume --- | --- Physical volume --- | ||
PV Name / | PV Name / | ||
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Allocated PE 233699 | Allocated PE 233699 | ||
PV UUID | PV UUID | ||
+ | </ | ||
Primero hacemos un test: | Primero hacemos un test: | ||
#lvresize -v -d -t -L +457G / | #lvresize -v -d -t -L +457G / | ||
Nos la jugamos:\\ | Nos la jugamos:\\ | ||
- | #lvresize -v -d -L +457G / | + | |
+ | |||
+ | < | ||
Found volume group " | Found volume group " | ||
Loading servidor-servidor_home table | Loading servidor-servidor_home table | ||
Line 438: | Line 448: | ||
Resuming servidor-servidor_home (253:3) | Resuming servidor-servidor_home (253:3) | ||
Logical volume servidor_home successfully resized | Logical volume servidor_home successfully resized | ||
+ | </ | ||
Una vez añadido incrementamos el tamaño online. Necesitamos el paquete ext2resize: | Una vez añadido incrementamos el tamaño online. Necesitamos el paquete ext2resize: |
informatica/linux/raid.1439466133.txt.gz · Last modified: 2015/08/13 11:42 by jose