X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.mount.xml;h=657cf11be36bcc0ae056cba23f7f97717718d8c3;hp=4bf652323ef3cde559a4be2c512119383419995f;hb=51cb9d734a182c4892a6b31f58d75489a2ca432b;hpb=059b37cc288ab529c6b5033af1f8118914f0329f diff --git a/man/systemd.mount.xml b/man/systemd.mount.xml index 4bf652323..657cf11be 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. @@ -72,15 +72,29 @@ 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.resource-control5, + which configure resource control 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 are not 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 - path to a unit name see + path to a unit name, see systemd.unit5. Optionally, a mount unit may be accompanied by @@ -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. @@ -107,7 +132,10 @@ 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 + configuration of the system manager is reloaded. In + general, configuring mount points through + /etc/fstab is the preferred + approach. See systemd-fstab-generator8 for details about the conversion. @@ -126,17 +154,40 @@ systemd.automount5 for details. If is - specified it may be used to configure how long systemd + specified, it may be used to configure how long systemd 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 is given, this mount + will be only wanted, not required, by the + local-fs.target. This means that + the boot will continue even if this mount point is not + mounted successfully. Option has + the opposite meaning and is the default. + + If is given, this mount + will not be added as a dependency for + local-fs.target. This means that + it will not be mounted automatically during boot, + unless it is pulled in by some other unit. Option + has the opposite meaning and is + the default. + 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. @@ -147,11 +198,13 @@ 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= @@ -172,17 +225,17 @@ 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. @@ -192,8 +245,8 @@ 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. @@ -214,78 +267,27 @@ 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. + logic. The default value is set from the manager configuration + file's DefaultTimeoutStart= variable. - - - KillSignal= - Specifies which signal - to use when killing a process of this - mount. Defaults to SIGTERM. - - - - - 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". - - - - - - - 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. - - - - FsckPassNo= - - The pass number for - the file system checking service for - this mount. See - systemd.service5 - for more information on this setting. - - - + Check + systemd.exec5 + and + systemd.kill5 + for more settings. @@ -295,10 +297,14 @@ systemctl8, systemd.unit5, systemd.exec5, + systemd.kill5, + systemd.resource-control5, systemd.service5, systemd.device5, + proc5, mount8, - systemd-fstab-generator8 + systemd-fstab-generator8, + systemd.directives7