Installation guide

Chapter 9. The XFS File System

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root 0 0 0 00 [------]

testuser 103.4G 0 0 00 [------]

...

To set a soft and hard inode count limit of 500 and 700 respectively for user john (whose home

directory is /home/john), use the following command:

xfs_quota -x -c 'limit isoft=500 ihard=700 /home/john'

By default, the limit sub-command recognizes targets as users. When configuring the limits for a

group, use the -g option (as in the previous example). Similarly, use -p for projects.

Soft and hard block limits can also be configured using bsoft/bhard instead of isoft/ihard. For

example, to set a soft and hard block limit of 1000m and 1200m, respectively, to group accounting

on the /target/path file system, use the following command:

xfs_quota -x -c 'limit -g bsoft=1000m bhard=1200m accounting' /target/path

Note

While real-time blocks (rtbhard/rtbsoft) are described in man xfs_quota as valid units

when setting quotas, the real-time sub-volume is not enabled in this release. As such, the

rtbhard and rtbsoft options are not applicable.

Setting Project Limits

Before configuring limits for project-controlled directories, add them first to /etc/projects. Project

names can be added to/etc/projectid to map project IDs to project names. Once a project is

added to /etc/projects, initialize its project directory using the following command:

xfs_quota -c 'project -s projectname'

Quotas for projects with initialized directories can then be configured, as in:

xfs_quota -x -c 'limit -p bsoft=1000m bhard=1200m projectname'

Generic quota configuration tools (e.g. quota, repquota, edquota) may also be used to manipulate

XFS quotas. However, these tools cannot be used with XFS project quotas.

For more information about setting XFS quotas, refer to man xfs_quota.

9.4. Increasing the Size of an XFS File System

An XFS file system may be grown while mounted using the xfs_growfs command, as in:

xfs_growfs /mount/point -D size

The -D size option grows the file system to the specified size (expressed in file system blocks).

Without the -D size option, xfs_growfs will grow the file system to the maximum size supported by

the device.

Before growing an XFS file system with -D size, ensure that the underlying block device is of an

appropriate size to hold the file system later. Use the appropriate resizing methods for the affected

block device.