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CentOS LVM Resizing Guide
On November 3, 2010, in CentOS 5.2, CentOS 5.3, CentOS 5.4, CentOS 5.5, by How2CentOS
Since the release of CentOS 5.5 we noticed that the default CentOS install assigns a considerable
amount of its available storage space to Swap. If you don’t catch this during the installation don’t worry, Logical
Volume Manager or LVM will rectify this post install.
LVM is a logical volume manager for the Linux kernel; it manages disk drives and similar mass-storage devices,
in particular large ones. The term “volume” refers to a disk drive or partition thereof.
Before we start just some general housekeeping. The XEN virtual CentOS 5.5 server (base install) in this tutorial
was assigned 10GB of storage with the default partitioning layout.
Let check the amount of disk space available on the file system.
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing requiredPerforming an on-line resize of /dev/VolGroup00/LogVol00 to 2359296 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 2359296 blocks long.
Rebuild the swap partition.
# mkswap /dev/VolGroup00/LogVol01
Setting up swapspace version 1, size = 939520 kB
Turn swap on.
# swapon /dev/VolGroup00/LogVol01
Let’s check the amount of disk space available and LVM attributes to see if our changes took effect.
VG Name VolGroup00LV UUID oFXKGg-nBPo-Fk27-3ino-zaHZ-cEcv-fk0dS0
LV Write Access read/write
LV Status available# open 1
LV Size 9.00 GB
Current LE 288
Segments 2Allocation inherit
Read ahead sectors auto
– currently set to 256Block device 253:0
— Logical volume —
LV Name /dev/VolGroup00/LogVol01VG Name VolGroup00
LV UUID Ntffw7-dqPh-Rjhy-rWLv-BGA0-iGik-LoyHET
LV Write Access read/write
LV Status available# open 1
LV Size 896.00 MB
Current LE 28
Segments 1Allocation inherit
Read ahead sectors auto
– currently set to 256Block device 253:1
Related posts:
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3. CentOS: The most popular Linux distribution for web servers
4. CentOS: Change Hostname5. How to install XEN 3.4.1 on CentOS 5.4
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Tagged with: CentOS • CentOS 5.5
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Thanks!
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NICE !!
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Thank you so much for the accurate and detailed post. Very helpful!!
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Денис Пищухин 1 week ago
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Thalamus 2 months ago
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Pgpresto 5 months ago
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ventura10 6 months ago
1 how2centos @
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Thanks man, you saved my day!
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Yay! Excellent post for a quick space recovery. Thanks!
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Hi!Welcometo
How2CentOS!
Here you'll a find a repository of tutorials and everything relating to CentOS, CentOS 5.7 and CentOS 6including some other distros like RedHat and Fedora.