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Man Pages


Manual Reference Pages  -  SYS::FILESYSTEM::LINUX (3)

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NAME

Sys::Filesystem::Linux - Return Linux filesystem information to Sys::Filesystem

CONTENTS

SYNOPSIS

See Sys::Filesystem.

INHERITANCE



  Sys::Filesystem::Linux
  ISA Sys::Filesystem::Unix
    ISA UNIVERSAL



METHODS

version () Return the version of the (sub)module.

ATTRIBUTES

The following is a list of filesystem properties which may be queried as methods through the parent Sys::Filesystem object.
fs_spec Describes the block special device or remote filesystem to be mounted.

For ordinary mounts it will hold (a link to) a block special device node (as created by mknod(8)) for the device to be mounted, like ’/dev/cdrom’ or ’/dev/sdb7’. For NFS mounts one will have <host>:<dir>, e.g., ’knuth.aeb.nl:/’. For procfs, use ’proc’.

Instead of giving the device explicitly, one may indicate the (ext2 or xfs) filesystem that is to be mounted by its UUID or volume label (cf. e2label(8) or xfs_admin(8)), writing LABEL=<label> or UUID=<uuid>, e.g., ’LABEL=Boot’ or ’UUID=3e6be9de-8139-11d1-9106-a43f08d823a6’. This will make the system more robust: adding or removing a SCSI disk changes the disk device name but not the filesystem volume label.

fs_file Describes the mount point for the filesystem. For swap partitions, this field should be specified as ’none’. If the name of the mount point contains spaces these can be escaped as ’\040’.
fs_vfstype Dscribes the type of the filesystem. Linux supports lots of filesystem types, such as adfs, affs, autofs, coda, coherent, cramfs, devpts, efs, ext2, ext3, hfs, hpfs, iso9660, jfs, minix, msdos, ncpfs, nfs, ntfs, proc, qnx4, reiserfs, romfs, smbfs, sysv, tmpfs, udf, ufs, umsdos, vfat, xenix, xfs, and possibly others. For more details, see mount(8). For the filesystems currently supported by the running kernel, see /proc/filesystems. An entry swap denotes a file or partition to be used for swapping, cf. swapon(8). An entry ignore causes the line to be ignored. This is useful to show disk partitions which are currently unused.
fs_mntops Describes the mount options associated with the filesystem.

It is formatted as a comma separated list of options. It contains at least the type of mount plus any additional options appropriate to the filesystem type. For documentation on the available options for non- nfs file systems, see mount(8). For documentation on all nfs-specific options have a look at nfs(5). Common for all types of file system are the options ’noauto’ (do not mount when ’mount -a’ is given, e.g., at boot time), ’user’ (allow a user to mount), and ’owner’ (allow device owner to mount), and ’_netdev’ (device requires network to be available). The ’owner’ and ’_netdev’ options are Linux-specific. For more details, see mount(8).

fs_freq Used for these filesystems by the dump(8) command to determine which filesystems need to be dumped. If the fifth field is not present, a value of zero is returned and dump will assume that the filesystem does not need to be dumped.
fs_passno Used by the fsck(8) program to determine the order in which filesystem checks are done at reboot time. The root filesystem should be specified with a fs_passno of 1, and other filesystems should have a fs_passno of 2. Filesystems within a drive will be checked sequentially, but filesystems on different drives will be checked at the same time to utilize parallelism available in the hardware. If the sixth field is not present or zero, a value of zero is returned and fsck will assume that the filesystem does not need to be checked.

SEE ALSO

Sys::Filesystem, Sys::Filesystem::Unix, fstab(5)

VERSION

$Id$

AUTHOR

Nicola Worthington <nicolaw@cpan.org> - <http://perlgirl.org.uk>

Jens Rehsack <rehsack@cpan.org> - <http://www.rehsack.de/>

COPYRIGHT

Copyright 2004,2005,2006 Nicola Worthington.

Copyright 2009,2013 Jens Rehsack.

This software is licensed under The Apache Software License, Version 2.0.

<http://www.apache.org/licenses/LICENSE-2.0>

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