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    #76
    Originally posted by oshunluvr View Post
    Unfortunately, I've come across no other installer that uses subvolumes automatically at install time except Kubuntu. My idea is to not only have the installer use subvolumes, but to also allow you to specify the subvolume name at install time. Then you can install numerous distros or versions to the same btrfs file system without any of the above shenanigans like Jerry is going through.
    With out wanting to re-invent the wheel I am going to follow the Ubuntu Btrfs scheme with Jessie:

    Ubuntu-specific subvolume layout in 11.04 and later

    In Ubuntu 11.04 and later, the installer sets up btrfs with a specific layout:
    The default subvolume to mount is always the top of the btrfs tree (subvolid=5).
    Subvolumes are created below the top of the btrfs tree as needed, e.g. for / and /home, it creates subvolumes named @ and @home. This means that specific options are needed in order to mount the subvolumes, instead of the default btrfs tree top:
    • [*=left]The @ subvolume is mounted to / using the kernel boot option rootflags=subvol=@
      [*=left]The @home subvolume (if it is used), is mounted via the mount option subvol=@home in fstab.

    How to work with snaphots in Ubuntu's layout

    In order to work with snapshots of / or /home in the Ubuntu layout it is very convenient to mount the btrfs filesystem at a separate location, and work from the top of the btrfs tree, rather than from the mounted subvolumes.
    sudo mount /dev/sdX# /mntCreate snapshots

    To create a snapshot use
    sudo btrfs subvolume snapshot /mnt/@ /mnt/@_snapshotthis will create a snapshot of the @ subvolume named @_snapshot located also in the top of the btrfs tree.
    Rollback to a snapshot

    To roll back to a snapshot, you simply need to change its name to the name that ubuntu mounts, using
    sudo mv /mnt/@ /mnt/@_badroot
    sudo mv /mnt/@_snapshot /mnt/@and reboot.
    Delete a snapshot

    To delete a snapshot use
    sudo btrfs subvolume delete /mnt/@_badrootbtrfs snapshots are subvolumes in themselves, and self-contained, deleting the old @ subvolume like this is fine, provided we have a replacement.
    The btrfs-tools command ''set-default'' will break Ubuntu's layout

    Since Ubuntu is set up to always keep the top of the btrfs tree as the default mounting subvolume it will break when using the btrfs-tools command set-default, since this command is specifically designed to change the default mounting subvolume.
    The mount options for / and /home described above relies on the fact that the corresponding subvolumes @ and @home can be located below the default mounting subvolume, and if set-defaultis used, this is no longer the case.
    If you have accidentally used set-default and want to revert, you can do the following
    sudo mount /dev/sdX# /mnt
    sudo btrfs subvolume set-default 5 /mnt
    since the id 5 is a permanent alias for the top of the btrfs tree.


    Using the idea above, a Debian installation is modified using techniques in this link.
    Last edited by GreyGeek; Jul 03, 2015, 02:37 PM.
    "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
    – John F. Kennedy, February 26, 1962.

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      #77
      Ladies and Gentlemen,
      In the Education Corner ...


      For people not up to snuff on what Debian is, its history, what the big deal is, about systemd, desktop vs server use, and such, check out this link for straight, conversational talk.


      Debian 8: Linux’s most reliable distro makes its biggest change since 1993
      http://arstechnica.com/information-t...ge-since-1993/
      (Also, discusses systemd: it's an issue for servers, mainly; most mainstream desktop users will probably not notice using systemd.)

      This seems to be a common sentiment:
      You've probably noticed a theme here; Debian is behind the curve when it comes to version numbers. Why run Debian on the desktop when similar downstream distros like Xubuntu or Ubuntu GNOME or Linux Mint offer arguably the same thing with newer packages and a more polished interface? These are, after all, Debian derivatives—aren't you in effect using Debian?
      The answer I suspect lies in that legendary Debian stability. And many developers like to mimic the server in their local environment. For the average Linux user, though, the downstream derivatives are probably a better bet in many cases. Ubuntu and Linux Mint might not be quite as stable, but they deliver more frequent updates to the applications most people use daily. That means more new features and arguably a better experience. If you want something similar, but for philosophical reasons feel more comfortable with Debian, there's always Debian Testing.
      The pitch for Debian is very much stronger for servers than for desktops, so it seems?
      If Debian on the desktop is perhaps a bit too far behind to entice today's user, nearly the opposite is true on the server. There's systemd to deal with, but once you get past the systemd changes there's much to love about Jessie here ... [read on]...

      --> --> --> Wait! There's more!

      Debian 8.0 'Jessie' is out and even Microsoft is celebrating
      http://www.pcworld.com/article/29145...lebrating.html

      Modern computers that use EFI boot mode instead of BIOS boot mode have been a bit of a pain point, but Debian 8.0 Jessie has seen a lot of improvements here. Computers with broken EFI implementations should now be handled much more gracefully.
      ... and more ...


      What's what in Debian Jessie
      Getting a Debian Linux release out the door is never easy, but the latest and greatest, Debian 8, "Jessie" is out now.
      http://www.zdnet.com/article/whats-w...-debian-jesse/
      In the meantime, Debian comes with greatly improved Unified Extensible Firmware Interface (UEFI) support. This means it will be easier than ever to install Debian on Windows 8.x PCs with secure boot.
      One thing, which may puzzle new users, is that Debian doesn't appear to have the Firefox web browser or Thunderbird e-mail client. These mainstays of many Linux desktops actually are present, but they've been slightly forked. For Firefox, Debian uses Iceweasel for Firefox and Icedove for Thunderbird respectively. Under the name, they're the same programs.
      What Debian isn't, is a distribution for new comers. If you're new to Linux, I'd recommend Ubuntu or Mint. Both are based on Debian, but come with a lot more hand-holding. For power users, or businesses that want a very stable operating system and have the in-house expertise to manage Debian, Jessie is well worth your time.

      => Looks OK, no problem I see w/Jessie, based on the reports. I've not tried it, though. Not sure how much of what I know about Kubuntu (like command line and such) would apply; what the learning curve would be for the differences. Looks like things like kdesudo work, for example. The GRUB-EFI stuff works the same (in the Debian family). I continue to read positive things about Mint-KDE and even Xubuntu. I guess I can start trying out some things, cluttering up my HDD with OSs like I used to! PITA. Or forget it and ride this out with Kubuntu. I already decided: The latter wins out! (But am open to being swayed, somewhat.)
      Last edited by Qqmike; Jul 03, 2015, 07:58 PM.
      An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

      Comment


        #78
        well ,,,,,,so far @hear Debian-8 seams to work pretty much the same as Kubuntu ,,,,,,,,,,,only a bit ,,,,,lighter maby?







        and of course ,,,,,,,,,,,,,,,,,,,,,,, the obligatory kiss my cube .......








        ☢VINNY☢
        i7 4core HT 8MB L3 2.9GHz
        16GB RAM
        Nvidia GTX 860M 4GB RAM 1152 cuda cores

        Comment


          #79
          I configured my HP laptop for a second OS -- Debian 8.1, but I can't install it (at the moment) because I'm not connected by wire; wireless only, and the needed WiFi driver is non-free.
          Windows no longer obstructs my view.
          Using Kubuntu Linux since March 23, 2007.
          "It is a capital mistake to theorize before one has data." - Sherlock Holmes

          Comment


            #80
            Originally posted by Snowhog View Post
            I configured my HP laptop for a second OS -- Debian 8.1, but I can't install it (at the moment) because I'm not connected by wire; wireless only, and the needed WiFi driver is non-free.
            I had the same problem , but used a wired connection .

            however the installer did ask me if I had the files/packages for the wireless driver during install and was offering to install them as well

            VINNY
            i7 4core HT 8MB L3 2.9GHz
            16GB RAM
            Nvidia GTX 860M 4GB RAM 1152 cuda cores

            Comment


              #81
              Originally posted by vinnywright View Post
              I had the same problem , but used a wired connection .

              however the installer did ask me if I had the files/packages for the wireless driver during install and was offering to install them as well

              VINNY
              Yes, it did here too. However, I don't have the identified files, so I'll have to hook my laptop up to the wired connection upstairs (?) to install Debian.
              Windows no longer obstructs my view.
              Using Kubuntu Linux since March 23, 2007.
              "It is a capital mistake to theorize before one has data." - Sherlock Holmes

              Comment


                #82
                While Debian is renown for its server stability, desktop loads for the typical user aren't stressful enough to cause a catastrophic collapse of the desktop. I've been running Kubuntu 14.04 since it was alpha and haven't experienced a single abend. I've had the occasional app break but nothing like a show stopper. So, for the average user, I suspect that they'd not recognize a difference between Kubuntu 14.04 and Jessie KDE, save for the default browser and email. That assessment assumes that they use the EXT4 fs. If theY choose Btrfs then it's altogether another matter. Kubuntu's (Ubuntu's) installer is a light year ahead of Debian-8 when it comes to Btrfs.
                "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
                – John F. Kennedy, February 26, 1962.

                Comment


                  #83
                  Originally posted by Snowhog View Post
                  Yes, it did here too. However, I don't have the identified files, so I'll have to hook my laptop up to the wired connection upstairs (?) to install Debian.
                  you can just install it anyway ,,,,,,and just not have wireless until you add the "contrib non-free" to your sources list and hardwire up and install the firmware ,,,,,,,,,@hear it was the "firmware-iwlwifi" package.

                  VINNY
                  i7 4core HT 8MB L3 2.9GHz
                  16GB RAM
                  Nvidia GTX 860M 4GB RAM 1152 cuda cores

                  Comment


                    #84
                    Thanks Vinny. I'll just download the firmware-iwlwifi_0.44_all.deb package and place it on a USB stick. I think that will work.
                    Windows no longer obstructs my view.
                    Using Kubuntu Linux since March 23, 2007.
                    "It is a capital mistake to theorize before one has data." - Sherlock Holmes

                    Comment


                      #85
                      GreyGeek:
                      So, for the average user, I suspect that they'd not recognize a difference between Kubuntu 14.04 and Jessie KDE, save for the default browser and email. That assessment assumes that they use the EXT4 fs.
                      That seems to be the consensus of the reviews I read on Jessie. The real power and stability advantages of Debian shine through on the server side of life, so the experts tell me in their articles.
                      An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

                      Comment


                        #86
                        Originally posted by Snowhog View Post
                        Thanks Vinny. I'll just download the firmware-iwlwifi_0.44_all.deb package and place it on a USB stick. I think that will work.
                        O ,,please do try it,,,,,,,,I almost stopped the installer to get the package and try it my self ,,,,,, but the emergence hard wire is right next to me ,,,,so

                        I would be interested to know how the installer handles it .

                        VINNY
                        i7 4core HT 8MB L3 2.9GHz
                        16GB RAM
                        Nvidia GTX 860M 4GB RAM 1152 cuda cores

                        Comment


                          #87
                          Originally posted by Snowhog View Post
                          Thanks Vinny. I'll just download the firmware-iwlwifi_0.44_all.deb package and place it on a USB stick. I think that will work.
                          That is what I did when installing Jessie with my needed broadcom driver and it worked. My installation seems to be quite stable right now, after being used 3 weeks and I feel happy about it.

                          Comment


                            #88
                            Spent a lot of time reading Debian Jessie documentation and such. Can you point me at a basic download for 64-bit. I'm not sure how to decide the CD, DVD, which ones/how many, etc. I only want to test run the basic Jessie for a few things and look at its booting. Is CD #1 OK for that (i.e., no need for the 4 GB DVD)?
                            An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

                            Comment


                              #89
                              Originally posted by Qqmike View Post
                              Spent a lot of time reading Debian Jessie documentation and such. Can you point me at a basic download for 64-bit. I'm not sure how to decide the CD, DVD, which ones/how many, etc. I only want to test run the basic Jessie for a few things and look at its booting. Is CD #1 OK for that (i.e., no need for the 4 GB DVD)?
                              Here is the index directory. I downloaded the 1.2 gig version and it installed well.

                              http://cdimage.debian.org/debian-cd/...64/iso-hybrid/

                              Comment


                                #90
                                OK, I'll try the 1.2 GB kde iso. Thanks.
                                An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

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