Do not print each files restores by TSM in main output

[schabrolles]

Relax-and-Recover (ReaR) Pull Request Template

Please fill in the following items before submitting a new pull request:

Pull Request Details:

• Type: Enhancement

• Impact: Low

• Reference to related issue (URL):

• How was this pull request tested?

• SLES12SP2 on POWER with TSM

• Brief description of the changes in this pull request:

By default, TSM logs every file restored in the main output.
This produces a huge and difficult to read ReaR logfile.
The purpose of this PR is to

• improve ReaR output readability
• redirect TSM output to an external log file

[jsmeix]

In usr/share/rear/restore/NETFS/default/400_restore_backup.sh we have

    (   case "$BACKUP_PROG" in
            (tar)
        ...
        esac >"${TMP_DIR}/${BACKUP_PROG_ARCHIVE}-restore.log"

which results a /tmp/rear.XXX/tmp/backup-restore.log file
so that I suggest to use same kind of file name also for TSM i.e.

... 1>"$TMP_DIR/TSM-restore.log" ...

or perhaps even instead of the hardcoded TSM
some kind of BACKUP_PROG_ARCHIVE equivalent for TSM
if such a variable exists.

[jsmeix]

Looks good to me.
Perhaps use a backup restore log file name
of the form ...-restore.log so that ist is same
as for a ReaR NETFS backup restore.

[jsmeix]

Right now I noticed that the backup restore log file is not copied
into the recreated system into /var/log/rear/recover/
cf. usr/share/rear/wrapup/default/990_copy_logfile.sh
which copies all in $VAR_DIR/layout/ and $VAR_DIR/recovery/
but things in $TMP_DIR are intentionally not copied.

Perhaps it is better when in general a backup restore log file
is in $VAR_DIR/recovery/ (and not in $TMP_DIR) to get
the backup restore log file automatically copied into the
recreated system?

[jsmeix]

Now I noticed that a backup restore log file
is in $VAR_DIR/recovery/ would not be copied
for the 'restoreonly' workflow so that I need to think
a bit more carefully how to get the backup restore log file
properly copied into the recreated system...

[schabrolles]

@jsmeix,
I also think about that (copy the restore log file in the recreated system) and arrives at the same conclusion => not as easy.... If you have a good idea, please tell me.

[jsmeix]

@schabrolles
just merge this one with TSM-restore.log (instead of TSM_restore.log)
and later - as time permits - I will do a separated pull request to also
get backup restore log files properly copied into the recreated system.

[jsmeix]

FYI:
We have
usr/share/rear/restore/RSYNC/default/800_copy_restore_log.sh
but it copies to the old place /root (I will clean it up).