xfs_rtcp(8) System Manager's Manual xfs_rtcp(8)NAME
xfs_rtcp - XFS realtime copy command
SYNOPSIS
xfs_rtcp [ -e extsize ] [ -p ] source ... target
DESCRIPTION
xfs_rtcp copies a file to the realtime partition on an XFS filesystem. If there is more than one source and target, the final argument
(the target) must be a directory which already exists.
OPTIONS -e extsize
Sets the extent size of the destination realtime file.
-p Use if the size of the source file is not an even multiple of the block size of the destination filesystem. When -p is specified
xfs_rtcp will pad the destination file to a size which is an even multiple of the filesystem block size. This is necessary since
the realtime file is created using direct I/O and the minimum I/O is the filesystem block size.
SEE ALSO xfs(5), mkfs.xfs(8), mount(8).
CAVEATS
Currently, realtime partitions are not supported under the Linux version of XFS, and use of a realtime partition WILL CAUSE CORRUPTION on
the data partition. As such, this command is made available for curious DEVELOPERS ONLY at this point in time.
xfs_rtcp(8)
Check Out this Related Man Page
xfs_growfs(8) System Manager's Manual xfs_growfs(8)NAME
xfs_growfs, xfs_info - expand an XFS filesystem
SYNOPSIS
xfs_growfs [ -dilnrxV ] [ -D size ] [ -e rtextsize ] [ -L size ] [ -m maxpct ] [ -t mtab ] [ -R size ] mount-point
xfs_info [ -t mtab ] mount-point
DESCRIPTION
xfs_growfs expands an existing XFS filesystem (see xfs(5)). The mount-point argument is the pathname of the directory where the filesystem
is mounted. The filesystem must be mounted to be grown (see mount(8)). The existing contents of the filesystem are undisturbed, and the
added space becomes available for additional file storage.
xfs_info is equivalent to invoking xfs_growfs with the -n option (see discussion below).
OPTIONS -d | -D size
Specifies that the data section of the filesystem should be grown. If the -D size option is given, the data section is grown to that
size, otherwise the data section is grown to the largest size possible with the -d option. The size is expressed in filesystem
blocks.
-e Allows the real-time extent size to be specified. In mkfs.xfs(8) this is specified with -r extsize=nnnn.
-i The new log is an internal log (inside the data section). [NOTE: This option is not implemented]
-l | -L size
Specifies that the log section of the filesystem should be grown, shrunk, or moved. If the -L size option is given, the log section
is changed to be that size, if possible. The size is expressed in filesystem blocks. The size of an internal log must be smaller
than the size of an allocation group (this value is printed at mkfs(8) time). If neither -i nor -x is given with -l, the log contin-
ues to be internal or external as it was before. [NOTE: These options are not implemented]
-m Specify a new value for the maximum percentage of space in the filesystem that can be allocated as inodes. In mkfs.xfs(8) this is
specified with -i maxpct=nn.
-n Specifies that no change to the filesystem is to be made. The filesystem geometry is printed, and argument checking is performed,
but no growth occurs.
-r | -R size
Specifies that the real-time section of the filesystem should be grown. If the -R size option is given, the real-time section is
grown to that size, otherwise the real-time section is grown to the largest size possible with the -r option. The size is expressed
in filesystem blocks. The filesystem does not need to have contained a real-time section before the xfs_growfs operation.
-t Specifies an alternate mount table file (default is /proc/mounts if it exists, else /etc/mtab). This is used when working with
filesystems mounted without writing to /etc/mtab file - refer to mount(8) for further details.
-V Prints the version number and exits. The mount-point argument is not required with -V.
xfs_growfs is most often used in conjunction with logical volumes (see md(4) and lvm(8) on Linux). However, it can also be used on a regu-
lar disk partition, for example if a partition has been enlarged while retaining the same starting block.
PRACTICAL USE
Filesystems normally occupy all of the space on the device where they reside. In order to grow a filesystem, it is necessary to provide
added space for it to occupy. Therefore there must be at least one spare new disk partition available. Adding the space is often done
through the use of a logical volume manager.
SEE ALSO mkfs.xfs(8), md(4), lvm(8), mount(8).
xfs_growfs(8)