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Thread: safely remove the device - does not work properly

  1. #1

    Default safely remove the device - does not work properly

    HI.

    At work I use openSUSE 13.2, KDE, 64-bit version. For months now I have one mistake for which I have not found a way to fix it.


    When I got to the USB port connected up an external HDD, and when you want to disconnect the HDD then in GUI mode, click on that icon to safely disconnect the device. After this menu is displayed pop-up screen that can now safely disconnect the device, but I hear that the plates in the disk still spinning. Then still disconnect the USB cable from the laptop, and then I hear the ugly and unpleasant sound of parking the head of the disk.


    On a couple of websites I found a description that might be operating on a KDE bug.


    Is there any way that I can fix it somehow, maybe I forgot something click in YaST?

    .........................

  2. #2
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    Default Re: safely remove the device - does not work properly

    I may be wrong here, but I thought that "safely remove" makes sure that all cache is written to the device. Not that the device should be switched off in some way.
    Henk van Velden

  3. #3

    Default Re: safely remove the device - does not work properly

    I think the term "safe remove the device" should mean just that, that can safely remove my ext hdd without risk to data or HDD.


    In ubuntu I'm used to that after the "safely remove the device" the device off completely, and even can not be re-mout without physical re-connection to the USB port.

    I'm not sure whether it was a error to opensuse, or error in KDE, or somewhere that I skipped settings .

  4. #4
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    Default Re: safely remove the device - does not work properly

    I do not have any problems with this. After I am told that I can safely remove, I can still mount the device with a root "mount" command, but I cannot mount via the GUI unless I disconnect then reconnect.

    If you can still mount with the GUI, then something is amiss though I'm not sure what.

    When the device notifier says that it is safe to remove the device, that should indicate that all data has been written to the device. However, it is possible that the device itself has a hidden on-board cache. That shouldn't matter either, if the device has its own power supply. Buf if the device is powered via the USB line, then maybe that could be a problem.

    I seem to recall that there was an earlier thread where somebody else had a similar problem. I don't remember the details. I seem to recall that it might depend on whether you are using the device notifier to unmount, or are using Dolphin or some other file manager.
    openSUSE Leap 15.1; KDE Plasma 5;
    testing Leap 15.2Alpha

  5. #5
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    Default Re: safely remove the device - does not work properly

    On 2015-05-14 17:06, nrickert wrote:
    >
    > I do not have any problems with this. After I am told that I can safely
    > remove, I can still mount the device with a root "mount" command, but I
    > cannot mount via the GUI unless I disconnect then reconnect.
    >
    > If you can still mount with the GUI, then something is amiss though I'm
    > not sure what.


    How the desktop(s) handle "safely remove" varies from version to
    version, desktop to desktop.

    There are several possibilities. One is umount and tell the device to
    power down. Another simply umounts. I remember a thread discussing all
    possibilities and their names in the desktops, long ago. All of them are
    "safe", the difference is how convenient each one is for each person.

    Hearing the disk spin down and park (now or later) is no problem, at
    least regarding data safety.

    --
    Cheers / Saludos,

    Carlos E. R.

    (from 13.1 x86_64 "Bottle" (Minas Tirith))

  6. #6

    Default Re: safely remove the device - does not work properly

    But I'm convinced that the option "safely remove device" should stop spinning plate ext HDD, such as ubuntu and windows. My ext hdd has no additional external power supply. To safely remove the option of using the icon in the system tray (the icon that appears when the person connecting HDD). This is how it works to me now, the greater the possibility of failure ext HDD.

  7. #7
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    Default Re: safely remove the device - does not work properly

    On 2015-05-15 09:26, MaxBunker wrote:
    >
    > But I'm convinced that the option "safely remove device" should stop
    > spinning plate ext HDD, such as ubuntu and windows.


    It is a matter of opinion :-)


    I remember a desktop (but not which one) that had both types: umount and
    power down, or only umount. The wording of each option was not clear
    about what each one did, and caused confusion.

    Let me see...

    On Nautilus, with right click, eject, the media is apparently powered down.

    On Thunar (xfce) I see both umount and eject, clearly labeled. With
    umount, click again and it mounts. With eject, I see the LED go off.

    On Dolphin (inside xfce) I do not see the device appear. Ah, Ok, found
    it, I had to activate the "places" panel. Safely remove powers down my
    stick.

    This is on 13.1.


    > My ext hdd has no
    > additional external power supply. To safely remove the option of using
    > the icon in the system tray (the icon that appears when the person
    > connecting HDD). This is how it works to me now, the greater the
    > possibility of failure ext HDD.


    After the "disk" is umounted, there is no danger to the data, even if it
    keeps spinning.

    --
    Cheers / Saludos,

    Carlos E. R.

    (from 13.1 x86_64 "Bottle" (Minas Tirith))

  8. #8

    Default Re: safely remove the device - does not work properly

    I would like to find a way to using the "safely remove device " to my ext hdd unmount and off, so that disconnection is absolutely safe for health information and HDD health.
    I tried to process the file manager , delphin , and the result is the same as the ones from the system tray icon.

    ..............................

  9. #9
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    Default Re: safely remove the device - does not work properly

    On 2015-05-15 15:16, MaxBunker wrote:
    >
    > I would like to find a way to using the "safely remove device " to my
    > ext hdd unmount and off, so that disconnection is absolutely safe for
    > health information and HDD health.


    Again, your hard disk is absolutely safe. Please show documentation that
    it isn't, and when you find it, open a bugzilla on the issue.

    --
    Cheers / Saludos,

    Carlos E. R.

    (from 13.1 x86_64 "Bottle" (Minas Tirith))

  10. #10

    Default Re: safely remove the device - does not work properly

    I'd have to agree with the other sage advice here.... use "Safely Remove" then turn the power off to the usb harddrive and do whatever you want after it spins down. Perfectly safe to the data and integrity of the hard drive. I use a couple of hard drive docking stations and shuffle multiple hard drives in and out, since I've been doing this for years I'd tell you if this could cause a problem. Seems that you are hesitant because the hard drive does not spin down automatically. It's not supposed to.....if the "Safely Remove" does not give an error message then there are no reads/writes pending and the head is parked. It doesn't presume your next action since you might re-mount, turn-off, or leave on-standby. if the spin down is important to you, you could identify the device using: #lsblk *to get a listing of all block devices then once the device name is known, put in "sleep" mode with: #hdparm -Y /dev/sd? this is not really necessary as most usb devices of this kind have a power on/off switch which can be used and accomplish the same thing. hope it helps....

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