xtaran / unburden-home-dir Goto Github PK

Hi,

I have to set XDG_CACHE_HOME="$HOME/.cache" because if it's empty unburden-home-dir overrides it. Is there a way of use unburden-home-dir without it set XDG_CACHE_HOME to the /tmp/.unburden-%u/cache ?

This WARNING is in my .xsession-errors. Although I have lsof installed
$ rpm -q lsof
lsof-4.88-2.fc22.x86_64

On my Fedora 22 desktop (and I guess on all fedora/redhat clones/derivatives) lsof is located at /usr/sbin:
$ which lsof
/usr/sbin/lsof

Unfortunately when snippet is run by xinit, '/usr/[local/]sbin' directories are not part of the PATH.
They are added by /etc/profile which means on interactive shells only.

as inspiration, my /usr/local/bin/overlay-zram

#!/bin/bash -xv
set -e # die if one step fails

echo "called $0 $@"
dir=$(basename "$@")
zram=/tmp/zram

modprobe -v zram
zramdev=$(zramctl --find --size 20GiB --algorithm lz4)
mkfs.ext4 -O ^has_journal ${zramdev}
mkdir -pv ${zram}
mount -vo discard,dax,noatime ${zramdev} ${zram}
mkdir -pv "/tmp/${dir}-union" "${zram}/${dir}"/{.work,.upper}
modprobe -v overlay
mount -vt overlay overlay -o "lowerdir=${@},upperdir=${zram}/${dir}/.upper,workdir=${zram}/${dir}/.work" "/tmp/${dir}-union"
chown -v --reference="${@}" "/tmp/${dir}-union"

Compression ratio can be looked at with zramctl ..
hard to know if it's worth the fuzz without trying..

All Electron apps store cache files in .config and other folders and eat a lot of space, here is issue about this problem: electron/electron#8124

Until this issue solved, will be good to have default configuration for unburden all those folders, something like this:

# Electron apps in .config folder
m D .config/*/Cache electronApp-%1-Cache
m D .config/*/GPUCache electronApp-%1-GPUCache
m D .config/*/*/Cache electronApp-%1-%2-Cache
m D .config/*/*/GPUCache electronApp-%1-%2-GPUCache

What do you think about this idea?

The typical error message seems: "Agent admitted failure to sign using the key."

GNOME Keyring changed the keyring socket's location from somewhere under /tmp/ to somewhere under $HOME/.cache with 3.3.92 (i.e. a 3.4 beta release).

This should be at least documented and the default configuration should care about it if it's no GNOME Keyring bug.

Doesn't affect Debian Squeeze or Ubuntu Precise, but will affect Debian Wheezy if not fixed.

I hope that I am not wrong on this:
Looking at contents of /etc/unburden-home-dir.list

• google-chrome
  I don't see files .config/google-chrome/*/Thumbnails[-journal]
  (actually I am using beta channel and dir for me is .config/google-chrome-beta, maybe its good idea to consider beta users too or maybe even unstable?)
  $ find . -name Thumbnails (in $HOME) returns nothing, so its not moved, just not valid (at least for beta)
  but there are 2 cache dirs at ~/.cache/google-chrome-beta/Default/
  google-chrome-beta-46.0.2490.13-1.x86_64
• for firefox
  cache dirs are under ./.cache/mozilla/firefox/{profile}/
  there is no Cache.Trash but few more
  firefox-40.0.3-1.fc22.x86_64

I guess I can fork/patch/create pull request but maybe that is not valid for every distribution,
I really have no idea.

I'm just wondering if anyone has used this in multiple seat environments, i.e. where I might be on workstation A on one day, and workstation B another, or even both at the same time?

Are all the the "unburdened" directories non-essential in the sense they could disappear and everything would keep working?

I configure moving .cache folder on Ubuntu 14.04 with KDE environment, but each time on login I see in logs this problem:

WARNING: Can't handle /home/user1/.cache: in use, not (re)moving. Process list:
   3813 (find)
   3813 (find)

So .cache folder will never moved to unburden location.

Seems that unburden-home-dir script launch find process, that don't finish on this check. How can I fix the problem? Maybe can help sleep command for some seconds before this check?

for example if i want to handle some chromium files, then a list entry
m f .config/chromium/Default/Cookies chromium/Default/Cookies
works totally fine, but how to handle a file with spaces in its name, e.g. Network Action Predictor?
I have tried
m f .config/chromium/Default/Network Action Predictor chromium/Default/Network Action Predictor
and
m f ".config/chromium/Default/Network Action Predictor" "chromium/Default/Network Action Predictor"
at the moment this entries in the list will be just silently ignored.

I have a config option that looks like:

m F app/output.txt app

If there is an existing symlink with a file as the target, i.e.

output.txt -> /user_data/.tmp/app.jvd/output.txt

Then you'll get errors like:

WARNING: Can't handle /u/jvd/app/output.txt: /user_data/.tmp/app.jvd/output.txt not equal /user_data/.tmp/app.jvd/ at /usr/bin/unburden-home-dir line 184, line 16.

If you remove the link, and run unburden again, it creates the link OK. Second time you run, you'll now see errors:

ERROR: Can't handle /user_data/.tmp/app.jvd/: Unexpected type (not a file) at /usr/bin/unburden-home-dir line 189, line 16.

So it looks to me when you evaluate the target for a link, that target is always a directory. But then check_for_unexpected_target is trying to ensure that the target is the same type as the source. So I don't see how that can work if you're symlinking a file to a directory?

Unless I've got the wrong end of the stick somewhere?