X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.mount.xml;h=214f40c74296aecd0a35720f879994b1dd38b3dc;hp=ddaa3ce744f5b15da1237aa57789298f1bec9250;hb=431c72dc3d482732a01d3ab929aa9b2c36422d46;hpb=92a39ae1989a7583d696afd4c89990aea802e9ea diff --git a/man/systemd.mount.xml b/man/systemd.mount.xml index ddaa3ce74..214f40c74 100644 --- a/man/systemd.mount.xml +++ b/man/systemd.mount.xml @@ -44,18 +44,18 @@ systemd.mount - systemd mount configuration files + Mount unit configuration - systemd.mount + mount.mount Description A unit configuration file whose name ends in - .mount encodes information about + .mount encodes information about a file system mount point controlled and supervised by systemd. @@ -72,11 +72,25 @@ systemd.exec5, which define the execution environment the mount8 - binary is executed in. + binary is executed in, and in + systemd.kill5, + which define the way the processes are terminated, and + in + systemd.cgroup5, + which configure control group settings for the + processes of the service. Note that the User= and + Group= options are not particularly useful for mount + units specifying a Type= option or + using configuration not specified in + /etc/fstab; + mount8 + will refuse options that aren't listed in + /etc/fstab if it is not run as + UID 0. Mount units must be named after the mount point directories they control. Example: the mount point - /home/lennart must be configured + /home/lennart must be configured in a unit file home-lennart.mount. For details about the escaping logic used to convert a file system @@ -88,14 +102,25 @@ mounting. See systemd.automount5. - If an mount point is beneath another mount point + If a mount point is beneath another mount point in the file system hierarchy, a dependency between both units is created automatically. - Mount points created at runtime independent on - unit files or /etc/fstab will be + Mount points created at runtime (independently of + unit files or /etc/fstab) will be monitored by systemd and appear like any other mount - unit in systemd. + unit in systemd. + See /proc/self/mountinfo description + in proc5. + + + Some file systems have special semantics as API + file systems for kernel-to-userspace and + userspace-to-userpace interfaces. Some of them may not + be changed via mount units, and cannot be disabled. + For a longer discussion see API + File Systems. @@ -104,7 +129,12 @@ Mount units may either be configured via unit files, or via /etc/fstab (see fstab5 - for details). + for details). Mounts listed in + /etc/fstab will be converted into + native units dynamically at boot and when the + configuration of the system manager is reloaded. See + systemd-fstab-generator8 + for details about the conversion. When reading /etc/fstab a few special mount options are understood by systemd @@ -125,13 +155,21 @@ should wait for a device to show up before giving up on an entry from /etc/fstab. Specify a time in - seconds or explicitly specifiy a unit as + seconds or explicitly specify a unit as s, min, h, ms. If a mount point is configured in both - /etc/fstab and a unit file, the - configuration in the latter takes precedence. + /etc/fstab and a unit file that + is stored below /usr the former + will take precedence. If the unit file is stored below + /etc it will take + precedence. This means: native unit files take + precedence over traditional configuration files, but + this is superseded by the rule that configuration in + /etc will always take precedence + over configuration in + /usr. @@ -142,11 +180,13 @@ supervises. A number of options that may be used in this section are shared with other unit types. These options are documented in - systemd.exec5. The + systemd.exec5 + and + systemd.kill5. The options specific to the [Mount] section of mount units are the following: - + What= @@ -167,17 +207,17 @@ Where= Takes an absolute path of a directory of the mount point. If - the mount point is not existing at + the mount point does not exist at the time of mounting, it is created. This string must be reflected in the unit - file name. (See above.) This option is + filename. (See above.) This option is mandatory. Type= Takes a string for the - filesystem type. See + file system type. See mount8 for details. This setting is optional. @@ -187,8 +227,8 @@ Options= Mount options to use - when mounting. This takes a comma - separated list of options. This + when mounting. This takes a + comma-separated list of options. This setting is optional. @@ -209,52 +249,46 @@ Configures the time to wait for the mount command to finish. If a command does not exit - within the configured time the mount + within the configured time, the mount will be considered failed and be shut down again. All commands still running will be terminated forcibly via - SIGTERM, and after another delay of - this time with SIGKILL. (See - below.) + SIGTERM, and after another delay of + this time with SIGKILL. (See + in + systemd.kill5.) Takes a unit-less value in seconds, or a time span value such as "5min 20s". Pass 0 to disable the timeout logic. Defaults to 90s. + - - KillMode= - Specifies how - processes of this mount shall be - killed. One of - , - , - . - - This option is mostly equivalent - to the - option of service files. See - systemd.service5 - for details. - + Check + systemd.exec5 + and + systemd.kill5 + for more settings. + - - KillSignal= - Specifies which signal - to use when killing a process of this - mount. Defaults to SIGTERM. - - + + Compatibility Options + The following option is also available in the + [Mount] section, but exists purely + for compatibility reasons and should not be used in + newly written mount files. + + - SendSIGKILL= - Specifies whether to - send SIGKILL to remaining processes - after a timeout, if the normal - shutdown procedure left processes of - the mount around. Takes a boolean - value. Defaults to "yes". + FsckPassNo= + + The pass number for + the file system checking service for + this mount. See + systemd.service5 + for more information on this setting. @@ -267,8 +301,14 @@ systemctl8, systemd.unit5, systemd.exec5, + systemd.kill5, + systemd.cgroup5, + systemd.service5, systemd.device5, - mount8 + proc5, + mount8, + systemd-fstab-generator8, + systemd.directives7