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Operating Systems AIX [ASK] decrease/shrink the size of filesystem Post 303032953 by Phat on Wednesday 27th of March 2019 06:43:12 AM
Old 03-27-2019
[ASK] decrease/shrink the size of filesystem

Hello,

I would like to reduce the size of filesystem online. We can do online for increase without any problem. So any risk can be occurred with the decrease? This is not an issue, just a discussion for decrease/shrink space with chfs command.

My AIX system is version 6.1 and the filesystem type is JFS2.
 

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

NAME
btrfsctl - control a btrfs filesystem SYNOPSIS
btrfsctl [ -d file|directory ] [ -s snapshot-name directory ] [ -S subvolume-name directory ] [ -r [+-]size ] [ -A device ] [ -a ] [ -c ] DESCRIPTION
btrfsctl is used to control the filesystem and the files and directories stored. It is the tool to create a new snapshot for the filesys- tem. OPTIONS
-d file|directory Defragment a file or a directory. If the argument is a directory, the entire b-tree under the directory is defragged. -s snapshot-name directory Creates a new snapshot of the directory specified. -S subvolume-name directory Creates a new subvolume. -r [+|-]size Resizes the filesystem with the size specified. If the value is preceded with a signed symbol, the filesystem is resized with respect to the current filesystem size. size can be suffixed by k,m or g to represent kilobytes, megabytes, or gigabytes respec- tively. -A device Scans the device for btrfs filesystem. -a Scans all devices present in the system for btrfs filesystem. -c Forces a filesystem sync. AVAILABILITY
btrfsctl is part of btrfs-progs. Btrfs is currently under heavy development, and not suitable for any uses other than benchmarking and review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details. SEE ALSO
mkfs.btrfs(8) BTRFSCTL(8)
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