![]() ![]() When the proc filesystem is mounted (say at /proc), the files /etc/mtab and /proc/mounts have very similar contents. If no arguments are given to mount, this list is printed. The programs mount and umount maintain a list of currently mounted file systems in the file /etc/mtab. When mounting a file system mentioned in fstab, it suffices to give only the device, or only the mount point. Adding the -F option will make mount fork, so that the filesystems are mounted simultaneously. (usually given in a bootscript) causes all file systems mentioned in fstab (of the proper type and/or having or not having the proper options) to be mounted as indicated, except for those whose line contains the noauto keyword. The file /etc/fstab (see fstab(5) ), may contain lines describing what devices are usually mounted where, using which options. The /etc/fstab, /etc/mtab and /proc/mounts files. (The customary choice none is less fortunate: the error message ‘none busy’ from umount can be confusing.) The proc file system is not associated with a special device, and when mounting it, an arbitrary keyword, such as proc can be used instead of a device specification. It is possible to indicate a block special device using its volume LABEL or UUID (see the -L and -U options below). For example, in the case of an NFS mount, device may look like :/dir. Most devices are indicated by a file name (of a block special device), like /dev/sda1, but there are other possibilities. make-rprivate mountpointmount -make-runbindable mountpoint Mount -make-rshared mountpointmount -make-rslave mountpointmount The following linux commands allows one to recursively change the type of all the mounts under a given mountpoint. make-private mountpointmount -make-unbindable mountpoint Mount -make-shared mountpointmount -make-slave mountpointmount Detailed semantics is documented in Documentation/sharedsubtree.txt file in the kernel source tree. A unbindable mount is a private mount which cannot cloned through a bind operation. A private mount carries no propagation abilities. A slave mount receives propagation from its master, but any not vice-versa. A shared mount provides ability to create mirrors of that mount such that mounts and umounts within any of the mirrors propagate to the other mirror. Since Linux 2.6.15 it is possible to mark a mount and its submounts as shared, private, slave or unbindable. Since Linux 2.5.1 it is possible to atomically move a mounted tree to another place. Note that the filesystem mount options will remain the same as those on the original mount point, and cannot be changed by passing the -o option along with –bind/–rbind. The entire file hierarchy including submounts is attached a second place using This call attaches only (part of) a single filesystem, not possible submounts. One can also remount a single file (on a single file). The call isĪfter this call the same contents is accessible in two places. ![]() Since Linux 2.4.0 it is possible to remount part of the file hierarchy somewhere else. The option -l adds the (ext2, ext3 and XFS) labels in this listing. Three forms of invocation do not actually mount anything: mount -h prints a help message mount -V prints a version string mount lists all mounted file systems (of type type). The previous contents (if any) and owner and mode of dir become invisible, and as long as this file system remains mounted, the pathname dir refers to the root of the file system on device. This tells the kernel to attach the file system found on device (which is of type type) at the directory dir. The standard form of the mount command, is Conversely, the umount(8) command will detach it again. The mount command serves to attach the file system found on some device to the big file tree. These files can be spread out over several devices. Mount device dir DescriptionĪll files accessible in a Unix system are arranged in one big tree, the file hierarchy, rooted at /.
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