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| author | Silvino Silva <silvino@bk.ru> | 2016-09-29 05:54:56 +0100 |
|---|---|---|
| committer | Silvino Silva <silvino@bk.ru> | 2016-09-29 05:54:56 +0100 |
| commit | 68834c562daf06b8625eea5c5b18430f594cea17 (patch) | |
| tree | 3fda22d99e09005a8f3ff7dc43e8f9bcf293262d /tools/lvm.html | |
| parent | 17bc450495c9ab6933590fb825dbd80b0af64a66 (diff) | |
| download | doc-68834c562daf06b8625eea5c5b18430f594cea17.tar.gz | |
tools storage and lvm revision
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| -rw-r--r-- | tools/lvm.html | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/tools/lvm.html b/tools/lvm.html new file mode 100644 index 0000000..8b1624a --- /dev/null +++ b/tools/lvm.html @@ -0,0 +1,151 @@ +<!DOCTYPE html> +<html dir="ltr" lang="en"> + <head> + <meta charset='utf-8'> + <title>LVM</title> + </head> + <body> + + <a href="index.html">Tools Index</a> + + <h1>LVM</h1> + + <p>Read <a href="https://raid.wiki.kernel.org/index.php/RAID_setup">Raid Setup</a>, + the only thing you will need outside system is: + "Patience, Pizza, and your favorite caffeinated beverage.". + <a href="https://wiki.archlinux.org/index.php/Software_RAID_and_LVM">Arch Wiki</a> + article about Sofware RAID and LVM.</p> + + <p>Basic idea behind RAID is to deal with independent disks + as an array of drives. Raid 0 uses two or more disks as one, + with performance gains without fault-tolerance. From raid 1 + to 6 they offer diferent fault tolerance mechanisms.</p> + + <p>LVM or Logic Volume Manager bring one more layer, read + <a href="http://www.tuxradar.com/content/lvm-made-easy">Lvm made easy</a>. + Partitions under lvm are easy to be resized, moved and there is + a tool to help encrypt. There is more freedom to name physical + disk names exp; production, development, backups...</p> + + + <p>Until now "from install" there is only one partition, + it is good idea to have a system with diferent partitions for each + propos. If is a "fresh install";</p> + + <pre> + # cd /iso/crux/opt/ + # pkgadd lvm2#2.02.107-1.pkg.tar.xz + # + </pre> + + <h2 id="lvmpart">1. LVM Partition</h2> + + <p>Create a LVM partition, fdisk should + show something like this;</p> + + <pre> + # parted /dev/sda + </pre> + + <p>I use defaults unless to define system partition last sector, + where in this example is size, +80G</p> + + + <h2 id="pv">2. Create physical volume</h2> + + <pre> + # pvcreate /dev/sdb3 + Physical volume "/dev/sdb3" successfully created + </pre> + + <h2 id="vg">3. Create volume group</h2> + + <pre> + # vgcreate vg_system /dev/sdb3 + Volume group "vg_system" successfully created + # vgcreate homevg /dev/sdb4 + Volume group "homevg" successfully created + # + </pre> + + <h3>3.1. Search Volume Groups</h3> + + <pre> + # vgscan + Reading all physical volumes. This may take a while... + Found volume group "homevg" using metadata type lvm2 + Found volume group "vg_system" using metadata type lvm2 + # + </pre> + + <h2 id="lv">4. Create logical volume</h2> + + <pre> + # lvcreate -L 15G -n distfileslv vg_system + Logical volume "distfileslv" created. + # lvcreate -L 8G -n packageslv vg_system + Logical volume "packageslv" created. + # lvcreate -L 4G -n swaplv vg_system + Logical volume "swaplv" created. + # lvcreate -L 80G -n homelv homevg + Logical volume "homelv" created. + # + </pre> + + <pre> + # mkfs.ext4 /dev/vg_system/distfileslv + # mkfs.ext4 /dev/vg_system/packageslv + # mkswap /dev/vg_system/swaplv + # mkfs.ext4 /dev/homevg/homelv + </pre> + + <h3>4.1. Activate Deactivate</h3> + + <p>Deactivate logical volumes;</p> + + <pre> + # lvchange -a -n /dev/vg_system/packageslv + # lvchange -a -n /dev/vg_system/distfileslv + # swapoff /dev/vg_system/sawplv + # lvchange -a -n /dev/vg_system/swaplv + </pre> + + <p>Deactivate volume group;</p> + + <pre> + # vgchange -a n vg_system + 0 logical volume(s) in volume group "vg_system" now active + # + </pre> + + <p>Activate volume group;</p> + <pre> + # vgchange -a y vg_system + 3 logical volume(s) in volume group "vg_system" now active + # + </pre> + + <h2 id="maint">5. Maintenance</h2> + + <pre> + # smartctl -t long /dev/sdb1 + # smartctl -a /dev/sdb1 | less + </pre> + + <p><a href="https://wiki.archlinux.org/index.php/Badblocks">Non Destructive Test;</a></p> + + <pre> + # badblocks -nsv /dev/sdb1 + </pre> + + <h2 id="encrypt">7. Encryption</h2> + + <a href="index.html">Tools Index</a> + <p> + This is part of the c9-doc Manual. + Copyright (C) 2016 + c9 team. + See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a> + for copying conditions.</p> + </body> +</html> |