BTRFS subvolume handling through a service menu

[GreyGeek]

Snapshots must be on the same file system as the source. I didn't want a convoluted mess of tracking what goes where so the default is create the subvolume in the same location as source subvolume. Here, I have my root file system mounted as /subvol. Navigating to /subvol and selecting "Take a snapshot" results in the snapshot in the same location.

Of course, and mounting /dev/sda1 to /mnt makes it part of the "same file system" as the other directories and subvolumes.

Are you seeing something different?

Don't know. Exactly what do you right click on when you want to make a root snapshot? Not /root.

What I see in the right panel when I click on "root" in the "Places" panel is every other folder under "/", but no folder in the right panel with "/". IOW, I cannot click on "/" in the right panel in order to create a root snapshot. So, I click on an empty area next to some file and your script equates it to clicking on "/", I guess.

[oshunluvr]

Snapshots must be on the same file system as the source. I didn't want a convoluted mess of tracking what goes where so the default is create the subvolume in the same location as source subvolume. Here, I have my root file system mounted as /subvol. Navigating to /subvol and selecting "Take a snapshot" results in the snapshot in the same location.

Are you seeing something different?

[GreyGeek]

Downloaded it, installed it. Tried it.
Taking a snapshot of /home was easy. Deleting it was easy.
Taking a snapshot of / wasn't as clear. Using /root wasn't it, of course, so I right clicked on an empty area in the listing of files under "/", since "/" wasn't in the directory listing in the right panel, and your submenu options appeared. Testing that empty area verified that it was a btrfs subvolume, .i.e., it was checking "/". So, I clicked on the "Create RO subvolume" on it and "_ro_20180213_130538" appeared in the tree. Checking both snapshots showed that they contained the right directories and files. I then selected each one and used the delete option to delete them. It all worked perfectly.

The only nit I have is that the snapshots were stored under "/" and "/home", and thus accessible using a file manager or the Konsole. This is the way "Snapper" treated them, except that it made them hidden. Normally, when a snapshot is taken of "/" (@) the "/home" (@home) subvolume in the snapshot is empty. It works that way with your script as well, as you would surmise. I did notice that when I created a second "/" snapshot and deleted it the "_ro_..." directory did not disappear as it did the first time, but the ghost tested as NOT a subvolume. Closing Dolphin and re-opening it allowed the ghost to disappear.

My preference is to use a root Konsole to
mount /dev/sda1 /mnt
which exposes
/mnt/@
/mnt/@home
and the directory where I store my snapshots:
/mnt/snapshots
Then I use
btrfs su snapshot -r /mnt/@ /mnt/snapshots/@_YYYYMMDD
btrfs su snapshot -r /mnt/@home /mnt/snapshots/@home_YYYYMMDD
to create the two snapshots.
IF I want to create off HD storage I mount my third HD
mount /dev/sdb1 /backup
and do a send-receive to it
btrfs send /mnt/snapshots/@_YYYYMMDD | btrfs receive /backup
btrfs send /mnt/snapshots/@home_YYYYMMDD | btrfs receive /backup

If I want to delete a snapshot I use
btrfs subvol delete -C /mnt/snapshots/@_YYYYMMDD
etc...

I then got to thinking about rollbacks using the snapshots your scripts generate.
My first try (but haven't tried it) would be to rename "/home" to "/home_old" or
mv /home /home_old
and then
mv /home_ro_YYYYMMDD_HHMMSS /home
and log out and log back in.

For rolling back root I'm not so clear.
mv / /old
and
mv _ro_YYYYMMDD_HHMMSS /
and reboot.


Once I figure that out I can see using your scripts to make temp snapshots just before a big update or change of some kind, and being able to quickly roll back if things don't work out. Either way, the snapshots would be quickly erased.

[oshunluvr]

Old thread, but I decided to put this service menu up on the KDE Store:

https://www.opendesktop.org/p/1214134/

[oshunluvr]

Interesting. @here, I get "unable to preview" but am presented with a Download button.

Dropbox has changed the way their website functions quite a bit lately.

[GreyGeek]

BTRFS subvolume handling through a service menu

LOL!

When I clicked on Oshunluver’s link it opened Dropbox but presented an empty page and did nothing else. I backed the zero out and replaced it with a one and hit the Enter key. It immediately downloaded the package but the webpage was still empty.
I have a DropBox account but the link did not open it.
Anyway, DL=false didn’t download the package but dl =true did.


Sent from my iPhone using Tapatalk

[vinnywright]

Worked for me, too, after I changed "dl=0" to "dl=1"

? Humm I wander why that was ?

and you should be more descriptive in your replies (forum 101,,,you get a FAIL and have extra home work ),,,,I searched through the scripts for a "dl=0" for 10 min before I thought to look at the dropbox URL

VINNY

[GreyGeek]

Worked for me, too, after I changed "dl=0" to "dl=1"

[vinnywright]

Vin, here's the latest full set with icons included: https://www.dropbox.com/s/vcq90apim3...us.tar.gz?dl=0

you are the MAN ...a very nice drop in replacement for my ServiceMenus directory , works perfect

the dropbox link let me just add it to my dropbox and BAM their it was in my ~/Dropbox directory ,,,,,,, so nice

thank you very much !

VINNY

[oshunluvr]

Vin, here's the latest full set with icons included: https://www.dropbox.com/s/vcq90apim3...us.tar.gz?dl=0

[vinnywright]

Glad you like it Vin.

I'm using kdialog for the prompts, kdialog --passive-popup for less important messages, and notify-send for more important ones - like send|receive complete and deletion of a subvol.

I even took the Breeze icons and made a set for me to use with these menu item and notify-send;

[ATTACH=CONFIG]7186[/ATTACH]

nice ,,,I like the purple ,,,,that would go nicely on my Neon-LTS.

VINNY

[oshunluvr]

Glad you like it Vin.

I'm using kdialog for the prompts, kdialog --passive-popup for less important messages, and notify-send for more important ones - like send|receive complete and deletion of a subvol.

I even took the Breeze icons and made a set for me to use with these menu item and notify-send;

[vinnywright]

didn't get back to this till just now ,,,,to add your "notify-send" edits nice ,,,,just had to put up the screen shot

curiously the Neon-frankenbuntu-(Kubuntu-16.04 with the neon-dev/stable) had it (the notify-send) installed already.

Vinny's loving @oshunluvr's scripts for btrfs snapshot handling in dolphin ,,,,,,,,, thank you Sr.

VINNY

[vinnywright]

Here's what I wanted:

notify-send -t 0 -i "dialog-ok" "message here"

I knew there was I way to do it, I just couldn't remember.

Aaaa nice ,,,,but @hear on the Neon-LTS install

vinny@vinny-Bonobo-Extreme:~$ notify-send -t 0 -i "dialog-ok" "message here"
The program 'notify-send' is currently not installed. You can install it by typing:
sudo apt install libnotify-bin

and after installing it ,,,it works as expected

VINNY

[oshunluvr]

Here's what I wanted:

notify-send -t 0 -i "dialog-ok" "message here"

I knew there was I way to do it, I just couldn't remember.