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− | {{WIP box}}
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| {{level|Advanced}} | | {{level|Advanced}} |
− | Source of this page is the [https://raid.wiki.kernel.org/index.php/Growing raid wiki] | + | Source of this page is the [https://raid.wiki.kernel.org/index.php/Growing raid wiki]. This is the [http://forums.contribs.org/index.php/topic,50311.0 initial forum post] which gives the need to write the the howto |
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| The purpose of this HOWTO is to add a new drive to an existing Raid5 with LVM, LVM is the standard installation of SME Server. Please backup your data before starting this HOWTO, '''or you may loose the lot'''. | | The purpose of this HOWTO is to add a new drive to an existing Raid5 with LVM, LVM is the standard installation of SME Server. Please backup your data before starting this HOWTO, '''or you may loose the lot'''. |
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| mdadm: ... critical section passed. | | mdadm: ... critical section passed. |
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− | {{tip box|msg=You need to keep --raid-devices='''4''' if you want to have an array of 4 drives+1spare, However if you do not want a spare drive, you should set --raid-devices='''5'''}} | + | {{tip box|msg=You need to keep --raid-devices='''4''' if you want to have an array of 4 drives+1spare, However if you do not want a spare drive, you should set --raid-devices='''5'''. This command can be used to grow an array of raid on the spare drive, just say to mdadm that you want to use all disks connected to the computer.}} |
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| {{Warning box|During the raid growing step you DO not shutdown your computer, or experienced an electrical failure, these issues can let your computer in a badly status and you can loose your data}} | | {{Warning box|During the raid growing step you DO not shutdown your computer, or experienced an electrical failure, these issues can let your computer in a badly status and you can loose your data}} |
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| 0 8 2 0 active sync /dev/sda2 | | 0 8 2 0 active sync /dev/sda2 |
| 1 8 18 1 active sync /dev/sdb2 | | 1 8 18 1 active sync /dev/sdb2 |
− | 3 8 34 2 active sync /dev/sdd2 | + | 3 8 34 2 active sync /dev/sdc2 |
| 4 8 50 3 active sync /dev/sde2 | | 4 8 50 3 active sync /dev/sde2 |
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− | 2 8 114 - spare /dev/sdc2 | + | 2 8 114 - spare /dev/sdd2 |
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| ===LVM: Growing the PV=== | | ===LVM: Growing the PV=== |
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− | Once the construction is complete, we have to set the LVM to use the whole space | + | {{Note box|Once the construction is complete, we have to set the LVM to use the whole space}} |
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| + | * In a root terminal, issue the following command lines |
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| [root@smeraid5 ~]# pvresize /dev/md2 | | [root@smeraid5 ~]# pvresize /dev/md2 |
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| 1 physical volume(s) resized / 0 physical volume(s) not resized | | 1 physical volume(s) resized / 0 physical volume(s) not resized |
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− | after that we can resize the LVM | + | * after that we can resize the LVM |
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| [root@smeraid5 ~]# lvresize -l +100%FREE /dev/main/root | | [root@smeraid5 ~]# lvresize -l +100%FREE /dev/main/root |
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| Performing an on-line resize of /dev/main/root to 19726336 (4k) blocks. | | Performing an on-line resize of /dev/main/root to 19726336 (4k) blocks. |
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− | You should verify that your LVM use the whole drive space with the command | + | * You should verify that your LVM use the whole drive space with the command |
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| + | On Koozali SME v10 you should use xfs_growfs instead of resize2fs |
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| + | [root@smev10~]# xfs_growfs /dev/main/root |
| + | meta-data=/dev/mapper/main-root isize=512 agcount=4, agsize=1854976 blks |
| + | = sectsz=512 attr=2, projid32bit=1 |
| + | = crc=1 finobt=0 spinodes=0 |
| + | data = bsize=4096 blocks=7419904, imaxpct=25 |
| + | = sunit=0 swidth=0 blks |
| + | naming =version 2 bsize=4096 ascii-ci=0 ftype=1 |
| + | log =internal bsize=4096 blocks=3623, version=2 |
| + | = sectsz=512 sunit=0 blks, lazy-count=1 |
| + | realtime =none extsz=4096 blocks=0, rtextents=0 |
| + | data blocks changed from 7419904 to 11615232 |
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| [root@smeraid5 ~]# pvdisplay | | [root@smeraid5 ~]# pvdisplay |