Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #197423

Re: BTRFS and debian

From David Christensen <dpchrist@holgerdanske.com>
Newsgroups linux.debian.user
Subject Re: BTRFS and debian
Date 2018-07-10 05:40 +0200
Message-ID <w9RFo-1Lb-5@gated-at.bofh.it> (permalink)
References <w9IVs-5bn-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On 07/09/18 11:17, Ge wrote:
> Hi there!
> I am new here.

Welcome! :-)


> I am trying to install debian on a VM to test it before i install it on
> my laptop. 

What hardware?  What host OS?  What hypervisor?


> Since its a laptop i would like to encrypt the hard drive. 

Disk encryption is a discussion unto itself.  One choice is a laptop 
with firmware that supports self-encrypting drives (SED) and a matching 
HDD/SSD.  One software choice for Stretch is dm-crypt/LUKS.

> I
> would also like to be able to return my whole system to a previous state
> or just my home directory.

Backup/recover, imaging, snapshots, version control, etc., are yet more 
discussions.  Since the subject line includes btrfs, subvolumes and 
snapshots may be an option:

https://en.wikipedia.org/wiki/Btrfs#Subvolumes_and_snapshots


I would need to work through the various use-cases to figure out what 
can be done with the subvolume mounted and in use, with the subvolume 
mounted but not in use, and with the subvolume not mounted.  (I use 
dd(1) to image partitions, with the LUKS container closed and/or the 
file system not mounted.)


> I would like to ask
> 
> 1. Whats the appropriate layout?
> My current layout is:
> 
> LVM VG Laptop-vg LV root 16.9GB Linux device mapper (linear)
> #1	16.9GB	f	btrfs	/
> 
> 
> LVM VG Laptop-vg LV swap 4.3GB Linux device mapper (linear)
> #1	4.3GB	f	swap	swap
> 
> Encrypted volume (sda5_crypt)-21.2GB Linux device mapper (crypt)
> #1	21.2GB	K	lvm
> 
> SCSI1 (0,0,0) (sda) 21.2GB ATA QEMU HARDDISK
> #1	primary	254.8MB	K	ext2	/boot
> #5	logical	21.2GB	K	crypto	(sda5_crypt)

I use 16 GiB SSD's and/or 16 GiB USB flash drives for system drives.  I 
wipe and test them using the manufacturer's diagnostic tool before 
installing Debian, or just wipe them with dd(1) if I do not have a tool. 
  In the Debian Installer, I choose 'manual' for 'partitioning method', 
create a new partition table (MBR), and create three primary partitions:

1   ~1 GiB btrfs mounted at /boot
2   ~2 GiB LUKS (random key) with swap
3  ~10 GiB LUKS (passphrase) with btrfs mounted at /

10 GiB root is enough for single-user Xfce workstation (my bulk data is 
on a file server).

The last ~3 GiB are unallocated -- for over-provisioning, because the 
drives have different numbers of sectors, and because of the GB/ GiB 
stupidity.


> Should i make a different partition for /home/ ?

I don't -- I put my bulk data on a file server, including all e-mail 
attachments.  My home directory is ~1 GB.


(If/when I want to travel with my laptop, I will need to figure out how 
to set up a VPN to my file server.)


> 2.I will obviously make the / partition btrfs. Do i have to use btrfs
> also on my boot partition?

No, but I do.


> 3.Is there any btrfs GUI program to manage my system on debian stretch
> or on debian buster? or i can only do this from the command line?

STFW I see:

http://carfax.org.uk/btrfs-gui
http://snapper.io/


Stretch has a package for Snapper:

https://packages.debian.org/search?keywords=snapper&searchon=names&suite=stable&section=all


(I use the included command-line tools.)


David

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

BTRFS and debian Ge <gpdsbe@mailbox.org> - 2018-07-09 20:20 +0200
  Re: BTRFS and debian Matthew Crews <mailinglists@mattcrews.com> - 2018-07-09 21:40 +0200
    Re: BTRFS and debian Ulf Volmer <u.volmer@u-v.de> - 2018-07-09 22:00 +0200
      Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-09 23:00 +0200
        Re: BTRFS and debian Ulf Volmer <u.volmer@u-v.de> - 2018-07-09 23:10 +0200
      Re: BTRFS and debian Matthew Crews <mailinglists@mattcrews.com> - 2018-07-09 23:40 +0200
  Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-10 05:40 +0200
    Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-11 20:40 +0200
      Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-12 05:10 +0200
        Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-12 07:50 +0200
          Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-13 03:20 +0200
            Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-14 00:40 +0200
              Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-14 03:00 +0200
                Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-14 11:10 +0200
                Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-14 21:40 +0200
                Re: BTRFS and debian Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-07-14 23:10 +0200
            Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-14 01:40 +0200
    Re: BTRFS and debian David Wright <deblis@lionunicorn.co.uk> - 2018-07-12 20:00 +0200
      Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-13 05:00 +0200
        Re: BTRFS and debian Dan Ritter <dsr@randomstring.org> - 2018-07-13 12:00 +0200
          Re: BTRFS and debian <tomas@tuxteam.de> - 2018-07-13 12:30 +0200
          Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-14 03:10 +0200
        Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-14 01:40 +0200
          Re: BTRFS and debian David Christensen <dpchrist@holgerdanske.com> - 2018-07-14 03:10 +0200
            Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-14 12:00 +0200
              Re: BTRFS and debian Reco <recoverym4n@gmail.com> - 2018-07-14 12:30 +0200
                Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-14 12:40 +0200
              Wrapping lines, was Re: BTRFS and debian David Wright <deblis@lionunicorn.co.uk> - 2018-07-15 05:20 +0200
                Re: Wrapping lines, was Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-15 05:30 +0200
                Re: Wrapping lines, was Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-15 12:30 +0200
        Re: BTRFS and debian Zenaan Harkness <zenaan@freedbms.net> - 2018-07-14 11:40 +0200

csiph-web