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Re: BTRFS and debian

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On 07/12/18 10:52, David Wright wrote:
> On Mon 09 Jul 2018 at 20:33:00 (-0700), David Christensen wrote:
>> On 07/09/18 11:17, Ge wrote:
>>> 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	/
>>
>> 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).
> 
> I'm not an LVM user so I live with my partitioning for years.
> I would opine that 10GiB is rather risky for a root partition
> (with /home separate). My smallest root partition, on an old
> laptop that I've been using since 2009, is 15GiB (74.5 GiB drive).
> 
> I'm not a DE user, which might reduce usage a little, but /usr
> alone ranges from 8.4GiB (jessie on that laptop) to 10.2GiB
> (wheezy, as it happens, on a desktop). That's without giving
> any consideration to /var and /tmp.

I have been reading Evi Nemeth, et al, 2018, "Unix and Linux System 
Administration Handbook", 5 e..  The authors make the point that cloud 
servers should be treated like cattle, not like pets -- e.g. when pets 
are sick, you expend resources trying to heal them; when cattle are 
sick, you shoot them [p. 272, fifth paragraph].


While a brutal analogy, it makes a point that can be applied to all 
computers -- devise strategies, invest in resources, and implement 
procedures that facilitate system roll-out, migration, and disaster 
recovery.  This is a goal I have pursued over the years.


When "apt-get update" broke networking on my primary desktop instance 
about two months ago, it took me perhaps two hours to confirm that 
networking was broken, to search for and to not find an easy fix, to 
migrate my Thunderbird profile to another computer (all other data and 
configuration settings were on the file/CVS server or in the cloud), and 
to reconfigure the backup/ archive server.


>>> 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.)
> 
> I would find that rather risky, so I have a "proper" separate,
> encrypted /home that ranges from 50GiB (laptop) to ~400GiB
> (desktops)—basically, the rest of the drive, though one laptop
> gives a fair amount of space over to a W10 installation.

First, I will need to test how the applications I use react to VPN 
connections going up and down.


My file server is also a CVS server.  This makes it easy to keep the 
same files on multiple computers, and to synchronize changes.  (CVS can 
solve the three-way merge problem for text files.  I need to be mindful 
when editing binary files.)


David

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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

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