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A Windowsserver provides a network directory called data via CIFS/SMB protocol. The data folder is mounted on a Linux client with password and user authentification.

Sometimes the drive gets disconnected, but is available again after a second. I do not know exactly why, but it seems to be because of the Windows server or a broken network component.

How can I make Linux reconnect automatic as soon as possible?

Jonas Stein
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    Try mount it with the **_netdev** option, it might help if you having network problem on the Linux client. – Intenso Jun 12 '13 at 08:59
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    @Intenso Can you provide a source for this? The man page said: `_netdev The filesystem resides on a device that requires network access (used to prevent the system from attempting to mount these filesystems until the network has been enabled on the system).` – Jonas Stein Jun 12 '13 at 18:16

4 Answers4

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I'd recommend mounting it via autofs. This is a service that will mount a directory on demand (for example if you cd into it or ls it) and unmount it automatically after a user defined timeout.

  • Install the autofs package for your distribution (by the way, remember to include your distro in your questions since an answer's details may depend on it).

  • Add the following to /etc/auto.master

    /media/[my_server] /etc/auto.[my_server]

    Where /media/[my_server] is the mount point of the share.

  • Create a file /etc/autofs/auto.[my_server] with this line:

    [any_name] -fstype=cifs,[other_options] ://[remote_server]/[share_name]

For more information see here and here.

terdon
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2

To add to the autofs answer, I recommend doing the the way it is described here:

https://andrewaadland.me/2017-06-18-autofs-nfs-and-archlinux-key-not-found-in-map-sources/

That is:

  • Make the first field in auto.master is always /-.
  • Use full mount name in /etc/autofs/auto.server.

So in my case, /etc/autofs/auto.master contains:

/-      /etc/autofs/auto.nas

And /etc/autofs/auto.nas contains:

/home/rkitover/nas -fstype=cifs,credentials=/home/rkitover/.nascredentials,uid=1000,gid=1000,iocharset=utf8 ://nas/rkitover

This works for me!

Rafael Kitover
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2

Just to offer another angle, a current solution is doing this with systemd, as described here:

https://anteru.net/blog/2019/automatic-mounts-using-systemd/

pableu
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    Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Dec 15 '21 at 22:38
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systemd + Mounts with Special Characters

Since most of these blogs and posts and such don't mention this in a way that was adequate for me, I want to a few key points:

  1. Keys like What= and Where= have literal values - no escapes
  2. Paths on the filesystem must be systemd-escaped
    • the shell will interpret \, so SINGLE quote it to escape: 'my\x20'
  3. You MUST run sudo systemctl daemon-reload between name/content changes
  4. sudo journalctl -xe ESCAPEME.mount will give better logs that status

Example: /etc/systemd/system/ESCAPEME.mount

/etc/systemd/system/mnt-TrueNAS-TV\x20Shows.mount:

[Unit]
  Description=My CIFs Media Mounter
  Requires=network-online.target
  After=network-online.service

[Mount]
  What=//192.168.1.200/TV Shows
  Where=/mnt/TrueNAS/TV Shows
  Options=username=my-user,password=my-secret
  Type=cifs

[Install]
  WantedBy=multi-user.target

Example: /etc/systemd/system/ESCAPEME.automount

/etc/systemd/system/mnt-TrueNAS-TV\x20Shows.automount:

[Unit]
  Description=My CIFs Media Automount

[Automount]
  Where=/mnt/TrueNAS/TV Shows

[Install]
  WantedBy=multi-user.target

More Info

See https://unix.stackexchange.com/questions/455094/auto-remount-cifs-share/740886#740886.

coolaj86
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