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Welcome to Catalin(ux) M. BOIE's page! Here you can find some work of mine on Linux kernel & other stuff. E-mail: catab # embedromix dot ro Phone: +40-745-048374 |
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My Fedora repository: rpm -Uhv http://kernel.embedromix.ro/dinorepo-0.0.12-1.noarch.rpm My Oracle/RedHat/CentOS repository: rpm -Uhv http://kernel.embedromix.ro/dinorepo-el-0.0.13-1.noarch.rpm Supported architectures: x86_64, i386, armv7hl, aarch64. |
| For commercial support and customizations, contact us at: Embedromix |
[Home] [Networking] [Crypto] [Linux kernel patches] [Userspace] [Docs] [CV/Resume] [Links]
| Name | Description | Links |
| Presentations | Presentations made by me | present.html |
| IFB | A mini howto on how to shape on incoming packets and distribute packets on multiple interfaces, sharing bandwidth. | ifb.html |
| RAID mini HOWTO | A mini howto describing linear, 0, 1, 5 and 6, using mdadm. | RAID.html |
| git mini HOWTO | A mini howto describing how to use git. | git.html |
| LVM mini HOWTO | A mini howto describing how to use LVM. | LVM.html |
| IPv6 mini howtos | Some mini howtos to easy IPv6 implementation. | ipv6.html |
| Random stuff | Some usefull one-liners. | random.html |
Content: LVM online replace a hard drive; dynamic add/remove physical volumes
Author: Catalin(ux) M BOIE
URL: http://kernel.embedromix.ro/docs/
Version: 0.1
. Prepare "physical" volumes dd if=/dev/zero of=disk1.img bs=1M count=200 losetup /dev/loop1 disk1.img pvcreate /dev/loop1 pvdisplay /dev/loop1 vgcreate vg1 /dev/loop1 pvdisplay /dev/loop1 vgdisplay vg1 lvcreate --size 50MB --name test1 vg1 lvdisplay vg1 . Replace a hard drive, on-line dd if=/dev/zero of=disk2.img bs=1M count=200 losetup /dev/loop2 disk2.img pvcreate /dev/loop2 # extend vg1 with the new drive vgextend vg1 /dev/loop2 vgdisplay vg1 # migrate data from disk1 to disk2 pvmove [--verbose] /dev/loop1 /dev/loop2 # remove physical volume from volume group vgreduce --verbose vg1 /dev/loop1 # Remove old disk pvremove /dev/loop1 # Done! . Take a snapshot lvcreate --name snapshot1 --size 100M --snapshot vg1/test1 mount /dev/vg1/snapshot1 /mountpoint lvdisplay vg1 . Remove a snapshot lvremove vg1/snapshot1 . Resize a lv lvresize /dev/vg1/test2 -L newsize . Remove a logical volume lvremove vg1/test1 . Remove a volumegroup vgremove vg1