*nix File System Choices? Post: 302209401

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Top Forums UNIX for Advanced & Expert Users *nix File System Choices? Post 302209401 by tekjunky on Thursday 26th of June 2008 08:35:08 PM

06-26-2008

Registered User

Please give an example of "large volumes of data". Linux has a native filesystem (ext2/3) which handles quite large files.

Taken from ext3 - Wikipedia, the free encyclopedia

Size limits

ext3 has a maximum size for both individual files and the entire filesystem. For the filesystem as a whole that limit is 2**31-1 blocks. Both limits are dependent on the block size of the filesystem; the following chart summarizes the limits[12]:

Code:

Block size 	Max file size 	Max filesystem size
1KiB 	         16GiB 	          <2TiB
2KiB 	         256GiB 	  <4TiB
4KiB 	         2TiB 	           <8TiB
8KiB 	         2TiB 	           <16TiB

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LEARN ABOUT BSD

vgreduce

VGREDUCE(8)						      System Manager's Manual						       VGREDUCE(8)

NAME
       vgreduce - reduce a volume group

SYNOPSIS
       vgreduce  [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi-
       calVolumePath...]

DESCRIPTION
       vgreduce allows you to remove one or more unused physical volumes from a volume group.

OPTIONS
       See lvm for common options.

       -a, --all
	      Removes all empty physical volumes if none are given on command line.

       --removemissing
	      Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes  normal
	      operation of the volume group (new logical volumes may again be created, changed and so on).

	      If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove
	      them manually, you can run this option with --force to have vgreduce remove any partial LVs.

	      Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those  parts
	      that lie on disks that are still present.

	      If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti-
	      vating your logical volumes with --partial as described in lvm (8).

SEE ALSO
       lvm(8), vgextend(8)

Sistina Software UK					 LVM TOOLS 2.02.95(2) (2012-03-06)					       VGREDUCE(8)