On Wed, Jul 03, 2019 at 07:16:17AM +1200, Seth Kenlon wrote:
> Using the UUID is correct.
>
> If the script isn't being executed by udev but you can confirm that
> udev is correctl mounting your target partition, and the shell script
> functions as expected when you run it manually, then I would create a
> simple timestamp shell script just to confirm that you can get a shell
> script to do *something* due to a udev event. The more complex the
> shell script, the more variables you have to debug, so simplify your
> shell script and work to just get a time stamp (or something) when a
> udev event occurs.
I've done that by embedding echo commands into the script that
will put debugging statements a debug file that you can look
at after bootup.
put one statement before anything else in the script and if you
don't get any debugoutput you'll know the script isn't being run.
Fred
>
> On Tue, Jul 2, 2019 at 3:07 AM Angelo Moreschini
> <mrangelo.fedora@xxxxxxxxx> wrote:
> >
> > thank you Seth,
> >
> > I have no problems with the script executed at the UDEV event (if this is the meaning you attribute to the term <UDEV script>).
> > I've already done this script that works, if run from a terminal.
> > If by the term <UDEV script> you mean something different, please tell me.
> >
> >
> > The problem is that this script is not executed as a result of the UDEV event.
> > - - - - - -
> > But maybe there is still something not clear for me that I can ask you:
> > The HD (USB) that I am using, is divided into three partitions (in order to keep the saved data separate):
> > = - = - = - = - = - =
> > the blkid command give this output ...:
> > / dev / sdc1: LABEL = "PRTZm_sys-admin" UUID = "1A5CEE7149E4BA81" TYPE = "ntfs" PARTUUID = "0007fd62-01"
> > / dev / sdc2: LABEL = "PRTZm_data-common" UUID = "7FB1E3D91206DE1C" TYPE = "ntfs" PARTUUID = "0007fd62-02"
> > / dev / sdc3: LABEL = "PRTZm_programming" UUID = "0A69FDE9688969D9" TYPE = "ntfs" PARTUUID = "0007fd62-03"
> > = - = - = - = - = - =
> > so far, till now, I tried to reveal the montage of the HD without taking into the account of partitions into which the USB HD is divided ..
> > But since the blkid command does not reveal its own UUID I am now thinking that this could be the problem.
> >
> > IN CONCLUSION, since the USB is divided into partitions, ... will the UDEV event reveal the presence of the entire HD (as the sole unit), or will it instead reveal the presence of the three individual different partitions?
> >
> > Still I would ask .... : this is a good syntax ? ENV{ID_FS_UUID}=="1A5CEE7149E4BA81"
> > and still also, :-) ....
> > what I have to use the UUID number, or instead the PARTUUID number ?
> >
> > thank you very much
> > Angelo
> >
> > On Mon, Jul 1, 2019 at 2:00 PM Seth Kenlon <skenlon@xxxxxxxxxx> wrote:
> >>
> >> Angelo,
> >> I agree with Tom's analysis, but my udev script accounts for it by
> >> mounting your drive with a very specific designator.
> >>
> >> Here is how I have tested this sort of thing before:
> >>
> >> 0. Get the UUID of your drive with blkid
> >> 1. Write a udev script to detect your drive by UUID when attached, and
> >> to execute a test shell script (such as /usr/local/bin/angelo-test.sh)
> >> when the drive is attached
> >> 2. Create the script /usr/local/bin/angelo-test.sh to do something
> >> very simle, like echo `date` >> /tmp/backup.log, and make it
> >> executable
> >> 3. Reboot
> >> 4. Attach your drive, and then look for the execution of your test
> >> script. If there was a /tmp/backup.log created with the correct date
> >> and time in it.
> >> 5. Look in /media to ensure that your drive has been mounted as a
> >> unique and persistent entitiy.
> >>
> >> If it worked, then change the script to your real backup script.
> >> Continue to test.
> >>
> >> If it failed, review your udev script, use `udevadm monitor` to
> >> discover why your drive isn't triggering your script.
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---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx -----------------------------
"For him who is able to keep you from falling and to present you before his
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----------------------------- Jude 1:24,25 (niv) -----------------------------
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