Package: restaround
What is restaround?restaround is a wrapper around the backup utilityresticsimplifying its use.This is done by defining profiles. A profile defines the arguments to be used forrestic.
Profiles can inherit from others.Quick startBacking up/homeinto/backup/restic:create directory~/.config/restaround/homeor/etc/restaround/homego into that directoryedit new filerepo. Content isbackup/resticedit new filepassword-file, put the password into itedit new filefiledir. Content is/homerestaround home initwill initialize the repositoryrestaround home backupwill backuprestaround home mount /mntwill mount all backups in /mntSynopsisUsage: restaround [-h] [-n] [-s] profile command [restic arguments]-h,--helpshow this help message and exit-n,--dry-runOnly show the restic command to be executedprofileUse profile. It is first looked for in~/.config/restaround/, then in/etc/restaround/commandthe restic command to be executedrestic argumentsany additional arguments forresticExamples wheremainis the name of a profile:restaround main backup --with-atime
restaround --dry-run main snapshots
restaround main diff --metadata 3a5f latest
restaround main mountProfilesLocationEvery profile is defined within its own directory. They are searched first
in~/.config/restaroundand then in/etc/restaround. If the same profile
is defined in both places: SeeInheriting.Arguments passed on the command line build another profile to be applied last.resticcan get many arguments in environment variables like$RESTIC_PASSWORD_FILE.
restaround just passes them on.DefinitionA profile is implemented as a directory with files for flags. Those can be
symbolic links, getting flag values from other profiles.Most files in that directory have the same spelling as theresticflag.
Inrestic, however the positional flags sometimes have names which do not allow
this like restic backup:FILE/DIR [FILE/DIR] ....
In that case, sayrestaround help backupto see the name restaround wants, in this casefiledir.The full name can be built as follows:[command] [no] [flag] [value] [value] …where the separate parts are joined by underlines. This character is not part
of anyresticcommand or argument. If you need _ in a value, do not use
the [value] part. There is an alternative.commandis a restic command. The file only applies to that command. If not given, it applies to all commandsnowill disable something defined in the inherited profilesflagis a restic flag likewith-atime. Special flags areinherit,preandpostvalueis the value for a flag like inrepo=valuemore valuesthe flag will be repeated for all valuesrestaround knows which restic commands know which flags, it will only
apply the allowed ones to a specific command.A profile directory might contain files likebackup_pre
backup_filedir
exclude-file
password-file
repo
no_with-atime
inherit_xxxSomeresticflags can be repeated like –tag:
tag can be a file with one or several lines. Each line is extended into –tag linecontent.Theresticflagscacert,cachedir,exclude-file,include-file,password-fileare special:
The corresponding file holds the content, soexclude-fileextends to--exclude-file=profile/exclude-file.
As you already know, symbolic links are allowed. Socacertmay be a symbolic link to the certification file.For flags with just one argument like –repo create profile/repo with one line.The alternative formflag_value1_value2_value3is treated like a file with 3 lines.
Soexclude_a_b_dircwould extend into--excludea--excludeb--excludedircSuch a file must be empty. Of course this form can only be used if the resulting file name
is legal for the file system and if no part contains an underline.taginresticis used as both a command and as an argument, but this should pose no problem.tag_tagis the “tag” flag applied only to command “tag”tag_tagais the “tag” flag applied to all commands as--tagtagaIf you really want to do--tag=tag, you can define a file namedtag(ortag_tag) with
one line “tag”.Special commandsThose commands are executed by restaround. Otherwise their usage is the same
regarding inheritance and execution of pre/post scripts.cpalmakes a copy of the repository. All files will be hard linked.
The name of the copy will be that of the repository + ‘restaround_cpal’
This can be useful before doing a critical operation you might want to undo.rmcpalremoves such a copy.Of course you could simply callcp-aldirectly. But using restaround has the
advantage that it will execute the pre- and postscripts. If the repository must
first be mounted and the be unmounted, the pre- and postscripts will do that.
Example:Automatically mounting and unmounting a USB driveInheritingThe special flaginheritcan be defined just like a normal flag but
it will be executed by restaround instead of passing it to restic. So you can use--inherit=remoteempty filebackup_inherit_remotefile with contentinheritYou can inherit from any number of other profiles.
If there is a profile nameddefault, it is always inherited from.
If a profile is defined both in/etc/restaroundand in~/.config/restaround,
both are inherited in that order.Most flags can be passed multiple times to restic. For those, restaround will follow
the inheritance tree from the top (thedefaultprofile) to the bottom (the profile
passed to restaround on the command line). Lastly, the arguments passed directly as
command line arguments are appended.the most general first (from the default profile), followed by descendOrder of executionProfiles are used top-down where top is thedefaultprofile and down is
the profile passed on the command line. Command line arguments are applied last.Multipleinheritcommand files in a profile are executed in alphabetical order.When loading a profile, theno_files are executed last. As as example, you can
definepreandno_pre_cachewhere pre mounts an external USB drive. So for
thecachecommand, the USB drive will not be mounted.If both a general and a command specific flag are defined within a profile, the
general flag is applied first.Pre- and PostscriptsThe special flagpredefines a script to be executed before theresticcommand.The special flagpostdefines a script to be executed after theresticcommand. It
gets the exit code of theresticcommand in the shell variableRESTIC_RESULT.Those flags can be defined analog tocacert, see above.Just like with any flag, inheritance means that severalpreorpostscripts might be
defined. They are executed in the order as defined for normal flags:defaultprofile first, command line arguments last. As soon as an exit code from aprescript
is not 0, restaround aborts with that exit code. This is not true forpostscripts:
after the main restic command finishes, all post scripts are always executed.The scripts will get some environment variables:Environment variablemeaningRESTAROUND_PIDthe process id of the calling restaroundRESTAROUND_PROFILEthe name of the profile restaround was called withRESTAROUND_COMMANDthe name of the wanted restic commandRESTAROUND_DRY_RUN1 if –dry-run was given, 0 elseRESTAROUND_LOGLEVELthe given –loglevel: error, warning, info, debugScripts can pass environment variables to the next script. Because there is no
way known to me how to do that on a non linux system, they do that like this:echo "VARNAME=VALUE"Everything a script writes to stdout must look like that. You must suppress other
output to stdout.Pre scripts are executed before the main restic command. They are allowed to
modify  the flags in the profile directory, the profile is rescanned after
every pre script.Those scripts also allows setting up chains like backup, check, forget, prune.
Just be careful not to go into endless loops.ExamplesDirectory structurefile namemeaningbackup_tag_taga_tagbbackup –tag taga –tag tagbrepo–repo REPONAME where REPONAME stands on the first line ofreporestore_no_tagfor restore only, removes –tag if it was defined in an inherited profileDefine separate profiles for the source and the repository and then combine them:DirectoryFiles/etc/restaround/defaultexclude-caches mountpoint/etc/restaround/localpassword-file repo/etc/restaround/remotepassword-file repo/etc/restaround/mydataexclude-file filedir/etc/restaround/mydata_localinherit_local inherit_mydata/etc/restaround/mydata_remoteinherit_remote inherit_mydataBackup mydata on a remote repository and list all snapshots on that repository:restaround mydata_remote backup
restaround remote snapshotsAutomatically mounting and unmounting a USB drivepre:#!/bin/bash

# This is reentrant. A pre or post script might call restaround

mount | fgrep 'on /backdisk3 ' >/dev/null
if test $? -eq 0
then
      echo DISK3_WAS_MOUNTED_BY=0
else
      mount /backdisk3 >/dev/null
      if test x${DISK3_WAS_MOUNTED_BY} == x
      then
              echo DISK3_WAS_MOUNTED_BY=$RESTAROUND_PID
              # else somebody else may have unmounted
      fi
fipost:#!/bin/bash

# only umount if we are called by the restaround instance which mounted

test $DISK3_WAS_MOUNTED_BY -eq $RESTAROUND_PID && umount /backdisk3Show diff after backupThis expects at least two snaphots in the repository. Better would be to
check whether $snap2 really holds exactly 2 values.backup_post:#!/bin/bash

snap2=$(restaround --loglevel error "$RESTAROUND_PROFILE" snapshots --json | jq -r '.[-2:][].id')

restaround "$RESTAROUND_PROFILE" diff $snap2 >&2Windowscpalandrmcpalare not supported.pre and post scripts must have the ending.batall example scripts in the documentation are only for Linux. You are on your own for Windows.InstallationGet it fromhttps://pypi.org/project/restaround/You can dopip3 install restaroundIf you want bash command line argument completion, put this into your .bashrc:eval"$(register-python-argcompleterestaround)"or seehttps://argcomplete.readthedocs.io/en/latest/You may have to install a python package. On Debian, it would bepython3-argcomplete.If you want to userestaround selftest, please install pytest, seehttps://docs.pytest.org:pip install-UpytestFor parallel test execution see the comment in the source: search for run_pytest.TODOmaybe lockrepo and unlockrepo:https://forum.restic.net/t/is-it-possible-to-decrypt-restic-files-from-the-command-line/2363/7maybe restaround –ionice, also as profile/ionice_c3