- 论坛徽章:
- 1
|
我认识的/etc/fstab中的字段
& & & The first field, (fs_spec), &describes &the &block &special &device &or
& & & remote filesystem to be mounted.
& & &
& & & The second field, (fs_file), describes the mount point for the filesys-
& & & tem. &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'.
& & & The third field, (fs_vfstype), describes 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.
& & & The &fourth &field, (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).
& & & The &fifth &field, &(fs_freq), &is &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.
& & & The sixth field, (fs_passno), is used by the fsck(8) program to &deter-
& & & mine 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.
& & & The proper way to read records from fstab is to use the routines getmn-
& & & tent(3). |
|
免费注册
发表于 2005-03-10 21:37
