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Full Discussion: Partition advice
Top Forums UNIX for Dummies Questions & Answers Partition advice Post 302831079 by mcclunyboy on Wednesday 10th of July 2013 07:06:12 AM
Old 07-10-2013
Partition advice

Hi,

I have a number of RHEL servers, they are all identical in build and all are encountering disk space issues very frequently. I am hoping you can help me answer a few questions:

1. The servers have 40GB (:O) SWAP Space, I am hoping to reduce this to 10GB at most and then re-use the other 30GB. What is the best way to do this?

2. After doing the above, do I HAVE to create a new partition, or can I extend the existing partitions (I know I can use parted to do this but does it only work for the final partition)?

3. As the servers are virtual I can allocate more disk, I assume this is closely related to question 2- if I can use this to extend existing partitions I will, otherwise I will need to create extra partitions?

I have read quite a few articles around this, mainly from the RHEL knowledge-base and as I have never done this sort of thing before I was hoping for some advice/clarification.

Thanks.
 

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KPARTX(8)						   Linux Administrator's Manual 						 KPARTX(8)

NAME
kpartx - Create device maps from partition tables SYNOPSIS
kpartx [-a | -d | -l] [-v] wholedisk DESCRIPTION
This tool, derived from util-linux' partx, reads partition tables on specified device and create device maps over partitions segments detected. It is called from hotplug upon device maps creation and deletion. OPTIONS
-a Add partition mappings -r Readonly partition mappings -r Read-only partition mappings -d Delete partition mappings -u Update partition mappings -l List partition mappings that would be added -a -p set device name-partition number delimiter -f force creation of mappings; overrides 'no_partitions' feature -g force GUID partition table (GPT) -v Operate verbosely -s Sync mode. Don't return until the partitions are created EXAMPLE
To mount all the partitions in a raw disk image: kpartx -av disk.img This will output lines such as: loop3p1 : 0 20964762 /dev/loop3 63 The loop3p1 is the name of a device file under /dev/mapper which you can use to access the partition, for example to fsck it: fsck /dev/mapper/loop3p1 When you're done, you need to remove the devices: kpartx -d disk.img SEE ALSO
multipath(8) multipathd(8) hotplug(8) AUTHORS
This man page was assembled By Patrick Caulfield for the Debian project. From documentation provided by the multipath author Christophe Varoqui, <christophe.varoqui@opensvc.com> and others. July 2006 KPARTX(8)
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