Re: Making a full backup with DAR

Hello Denis,

I found the file /etc/drrc on the attach

If I use the command :

dar -v -m 256  -s 1000M -D -R / -c `date -I`_data -Z "*.gz" -Z "*.bz2" 
-Z "*.zip" -Z "*.png" -P srv -P dev -P proc -P sys -P tmp -P run -P mnt 
-P media par2

give the output

Arguments read from /etc/darrc :
  "/srv/back-rsync/viavi/archive"  I add the path to backups

User target found on command line or included file(s):
     par2
     /srv/back-rsync/viavi/archive
Parse error: Given user target(s) could not be found: 
/srv/back-rsync/viavi/archive

After if remove the -v error is

Parse error: Given user target(s) could not be found: 
/srv/back-rsync/viavi/archive

After this i user the command

dar -v -m 256  -s 1000M -D -R / -c `date -I`_data  -Z "*.gz" -Z "*.bz2" 
-Z "*.zip" -Z "*.png" -P srv -P dev -P proc -P sys -P tmp -P run -P mnt 
-P media

output is :

Arguments read from /etc/darrc :

-Y and -Z are only useful with compression (-z option), ignoring any -Y 
and -Z option
-m is only useful with compression (-z option), ignoring -m
Creating low layer: Writing archive into a sar object (Segmentation and 
Reassembly) for slicing...
Writing down the archive header...
Adding a new layer on top: Caching layer for better performances...
Adding a new layer on top: Escape layer to allow sequential reading...
All layers have been created successfully
Building the catalog object...
Processing files for backup...

I see is working now but the problem is backup files maked in the 
directory stay now /etc/

Is working if I go to cd /srv/back-rsync/viavi/archive

But I not found how witout add path of backup

In 
http://dar.linux.free.fr/doc/mini-howto/dar-differential-backup-mini-howto.en.html#id5 
not have  path of the backup (the full command line)

In the scripts demo the DIR is added

-------------------------------------------------------------------------------

#!/bin/bash

*DIR=/var/backups/system*
FILE=${DIR}/`/bin/date -I`_diff
PREV=`/bin/ls $DIR/*.dar|/usr/bin/tail -n 1`
/usr/local/bin/dar -m 256 -y -s 600M -D -R / -c $FILE -Z "*.gz" \
    -Z "*.bz2" -Z "*.zip" -Z "*.png" -P home/gradha -P tmp -P mnt \
    -P dev/pts -P proc -P floppy -P burner -P cdrom \
    -P var/backups -A ${PREV%%.*} > /dev/null
/usr/local/bin/dar -t $FILE > /dev/null
/usr/bin/find $DIR -type f -exec chown .gradha \{\} \;
/usr/bin/find $DIR -type f -exec chmod 440 \{\} \;
-----------------------------------------------------------------

/usr/local/bin/dar is not right path
In my case is  /usr/bin/dar

In command :

/usr/bin/dar -m 256 -y -s 600M -D -R / -c $FILE -Z "*.gz" -Z "*.bz2" -Z "*.zip" -Z "*.png" -P proc -P tmp -P mnt -P dev -P sys -P srv -P mnt -P media -P  -A ${PREV%%.*} > /dev/null

We can add the path to backup?


07.07.2021 21:38, Denis Corbin пишет:
> On 07/07/2021 14:53, Сергей Цаболов wrote:
>> Hello to all.
> Hello Сергей,
>
>> I need to some help with setup full backup with dar some server.
>>
>> I read the page
>> http://dar.linux.free.fr/doc/mini-howto/dar-differential-backup-mini-howto.en.html#id5
>>
>>
>> And see  full command line I'll be using for my /system/ backup
>>
>> I make me command to test of backup.
>>
>> dar  -m 256 -y 6 -s 1000M -D /srv/archive -R / -c `date -I`_data -Z
>> "*.gz" -Z "*.bz2" -Z "*.zip" -Z "*.png" -P srv -P dev -P proc -P sys -P
>> tmp -P run -P mnt -P media
>>
>> The path /srv/archive is mount over NFS from TrueNas
>>
>> But after run the command to backup I give the
>>
>> Parse error: Given user target(s) could not be found:
>> /srv/back-rsync/viavi/archive
> I suggest you prepend "echo" to the dar command to see what is the
> result of the shell expansion:
>
> echo dar -m 256...
>
> you should see the "/srv/back-rsync/viavi/archive" string not introduced
> by any option (thus assumed to be a user target, where from the error
> message).
>
> This may also come from your ~/.darrc or /etc/darrc thus as second step
> I would add -v as first option to dar (without "echo" this time) if the
> previous test could not explain the problem.
>
> Don't hesitate to produce the output of these commands if don't find the
> typo.
>
>> Advise me how write command more correctly
>>
>>
>> Thanks
>>
> Cheers,
> Denis
>
>
>
>
-- 
-------------------------
С уважением
Сергей Цаболов,
Системный администратор
ООО "Т8"
Тел.: +74992716161,
Моб: +79850334875
[email protected]
ООО «Т8», 107076, г. Москва, Краснобогатырская ул., д. 44, стр.1
www.t8.ru

#############################################################
# This is the default system wide configuration file for dar
#
# This file provide a set of options referred each by a target
# name. They are not applied unless you specify that target on
# command line or included file. For example for par2:
# dar <...list of options...> par2
#
# This options set are available automatically for dar unless
# you define a .darrc in your home directory or use -N option
# on command-line.
# You can continue using this default file even if you use your
# own .darrc file, by including the following in it or explicitely
# command-line:
#
#     -B /etc/darrc
#
# In the following we are using short options here because long
# options may not be available everywhere.

##############################################################
# target: par2
# activates:
#   - par2 file generation when creating an archive
#   - par2 file verification and correction when testing an archive
# usage: dar <options...>  par2

par2:
  -B "/usr/share/doc/dar/examples/dar_par.dcf"

##############################################################
# target: compress-exclusion
# avoid compressing types of file known to already be compressed
# or to have very bad compression ratio
#
# usage: dar <options...> compress-exclusion

compress-exclusion:
# here we define some files that have not to be compressed.
# First setting case insentive mode on:
-an
# Then telling dar that the following masks are glob expression
# which is the default, right, but if sooner on command-line the
# user swapped to regex, the following mask would not work as expected
# any more, so we force back to glob expression in any case:
-ag

# Now follows all the file specification to never try to compress:

# compressed video format
-Z "*.mpg"
-Z "*.avi"
-Z "*.flac"
-Z "*.cr2"
-Z "*.vob"

# compressed picture format
-Z "*.jpg"
-Z "*.jpeg"
-Z "*.mpeg"
-Z "*.png"

# compressed audio format
-Z "*.mp3"
-Z "*.ogg"

# compressed package
-Z "*.deb"
-Z "*.tgz"
-Z "*.tbz2"
-Z "*.rpm"
-Z "*.xpi"
-Z "*.run"
-Z "*.sis"

# other compressed data
-Z "*.gz"
-Z "*.Z"
-Z "*.bz2"
-Z "*.zip"
-Z "*.jar"
-Z "*.rar"
-Z "*.xz"

# dar archives (may be compressed)
-Z "*.dar"

# Now we swap back to case sensitive mode for masks which is the default
# mode:
-acase

##############################################################
#  target: verbose
#  show both skipped files and files being processed
#
# usage: dar <options> verbose
verbose:
-va


##############################################################
# target: no-emacs-backup
# ignore temporary files or backup files generated by emacs
#
no-emacs-backup:
-ag
-X "*~"
-X ".*~"

##############################################################
# target: samba
# take care of daylight saving time for the samba filesystem
# type

samba:
-H 1
# samba filesystem need this to properly report date
# and not lead dar to resave all files when changing
# from summer to winter time and viceversa.

##############################################################
# target: dry-run
# an alias for --empty option, that get its name because the
# only available option letter was 'e' that leads to this non
# intuitive option name "empty".
#
dry-run:
-e

##############################################################
# target: bell
# ring the terminal upon user interaction request
#
bell:
-b

##############################################################
# target: full-from-diff
# rebuilds a full backup from a differential backup and its
# full backup of reference
# usage: dar -+ new_full -A old_ref_full -@ diff full-from-diff
#

full-from-diff:
-/ '{!(~I)}[Rr] {~S}[O*] P* ; {~s}[*o] *p'