27 lines
1.4 KiB
Markdown
27 lines
1.4 KiB
Markdown
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---
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obj: concept
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---
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Mounts are _systemd_ unit files with a suffix of _.mount_. A unit configuration file whose name ends in ".mount" encodes information about a file system mount point controlled and supervised by systemd.
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Mount Unit files like every unit file include the `[Unit]` and `[Install]` sections. Additionally all mount information is in the `[Mount]` section.
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## Mount Section
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Fields inside the mount section:
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- `What` : Takes an absolute path of a device node, file or other resource to mount
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- `Where` : Takes an absolute path of a file or directory for the mount point; in particular, the destination cannot be a symbolic link. If the mount point does not exist at the time of mounting, it is created as either a directory or a file. The former is the usual case; the latter is done only if this mount is a bind mount and the source (What=) is not a directory. This string must be reflected in the unit filename (example: `mountpoint=/home/me` -> `unit file: home-me.mount`).
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- `Type` : Takes a string for the file system type. This setting is optional.
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- `Options` : Mount options to use when mounting. This takes a comma-separated list of options. This setting is optional.
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## Example
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```
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[Unit]
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Documentation=man:fstab(5) man:systemd-fstab-generator(8)
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SourcePath=/etc/fstab
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[Mount]
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What=/dev/sda1
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Where=/mnt
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Type=btrfs
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Options=nosuid,nodev,nofail,compress=zstd,ro
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```
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