The following point is observed :- USB devices referenced in /etc/fstab are automatically mounted when the system is rebooted, even though their entries include the noauto option (the devices are already plugged in when a reboot is performed).
What happens to a USB device that is not referenced in /etc/fstab, when it is plugged into a USB port while the system is running :- If the filesystem is FAT32 (e.g. a memory stick) will it always be automatically mounted or will it always have to be manually mounted ? If the filesystem is NTFS (e.g. a portable hard drive) will it always be automatically mounted or will it always have to be manually mounted ? The automount system appears to be usbmount. On 29 Oct 2020 17:33, "David Wright" <deb...@lionunicorn.co.uk> wrote: > On Tue 27 Oct 2020 at 20:43:52 (+0000), Mick Ab wrote: > > On 27 Oct 2020 18:20, "Kenneth Parker" <sea7k...@gmail.com> wrote: > > > On Tue, Oct 27, 2020, 11:51 AM Mick Ab <recoverymail123...@gmail.com> > wrote: > > > > > >> If a filesystem in /etc/fstab has a noauto entry, can that filesystem > > >> only be mounted manually using the mount command or > > >> is there any chance that it will be automatically mounted by > > >> usbmount ? > > >> > > >> The filesystem is used in a USB port. > > > > > > I have a dislike of Gnome, because it seems to mount *every* > Filesystem > > > I have, even ones that I consider sensitive. > > > > > > But it doesn't occur until the GUI comes up. (I set the SystemD > Default > > > Target to multi-user and only type "systemctl start graphical.target" > after > > > I finish my "Apt Ritual"). > > > > > > Not sure what Gnome Package does this. Any Gnome Experts here? > > > > > Thanks for the replies. > > > > It seems to me that the situation is as follows :- > > > > Filesystems in /etc/fstab which have the noauto option are not > > automatically mounted at boot time, so if these filesystems are already > > plugged into USB ports at boot time, they would subsequently have to be > > manually mounted in order to be used. > > > > Filesystems which are plugged into a port after the system has been > booted > > are automatically mounted. > > I have no idea whether your automounter (presumably in use) detects > and mounts sticks when booting up completes, or even before. So is > your "It seems to me that the situation is" based on a gut feeling, > or on some observations? > > As I've mentioned before, I don't have sticks mounted automatically, > but I do have udev create and destroy mounts points when sticks are > inserted and removed. In the syslog, I can see my udev scripts running > on a stick (left already inserted) before, say, setting up swap. > (PIDs in the high 200s for udev, in the mid 400s for swap.) > > In view of your previous thread "Problem unplugging a USB drive", > is the situation you describe above satisfactory for you, or are > you indirectly asking how to change something? > > With flaky ports like those described, it sounds as if Brian's > post would be worth trying out. My own query on that would be > how to implement this approach without populating fstab with > a list of specific devices' LABELs/UUIDs. > > Cheers, > David. > >
