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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for March 16th, 2020

Mounting a Time Machine backup under Linux so you can send it to Backblaze using Restic…

Posted by jpluimers on 2020/03/16

[WayBack1/WayBack2] Memo to self: Ich will ein Time Machine Backup unter Linux mounten, um das “Latest” Verzeichnis mit Restic an Backblaze senden zu können. Schritt 1: Sp… – Kristian Köhntopp – Google+:

Memo to self: Ich will ein Time Machine Backup unter Linux mounten, um das “Latest” Verzeichnis mit Restic an Backblaze senden zu können.

Schritt 1: Sparsebundle mounten

# ls -l /export/tm_kk/
total 8
drwx—— 3 kris users 4096 Oct 21 16:24 KK.sparsebundle

Geht mit

# git clone git://github.com/torarnv/sparsebundlefs.git
# cd sparsebundlefs; make
# mkdir -p /bundles/tm_kk
# sparsebundlefs /export/tm_kk/KK.sparsebundle /bundles/tm_kk
# ls -lh /bundles/tm_kk
total 0
-r——– 1 root nogroup 1.5T Oct 21 16:24 sparsebundle.dmg

Schritt 2: DMG loopmounten

# fdisk -l /bundles/tm_kk/sparsebundle.dmg
Disk /bundles/tm_kk/sparsebundle.dmg: 1.5 TiB, 1648462135296 bytes, 3219652608 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 15FCCBBD-49E4-42BB-B359-EF662F9916CF

Device Start End Sectors Size Type
/bundles/tm_kk/sparsebundle.dmg1 40 409639 409600 200M EFI System
/bundles/tm_kk/sparsebundle.dmg2 409640 3219390423 3218980784 1.5T Apple HFS/HFS+

# kpartx -a -v /bundles/tm_kk/sparsebundle.dmg
add map loop8p1 (253:1): 0 409600 linear 7:8 40
add map loop8p2 (253:19): 0 3218980784 linear 7:8 409640

# mkdir -p /hfs/tm_kk
# mount -o ro -t hfsplus /dev/mapper/loop8p2 /hfs/tm_kk
# b=$(readlink /hfs/tm_kk/Backups.backupdb/KK/Latest)
# ls -l /hfs/tm_kk/Backups.backupdb/KK/$b
total 0
drwxr-xr-x 1 root root 30 Oct 21 14:26 ‘Macintosh HD’

Schritt 3: tmfs mount

Ein Time Machine Backup enthält doofe Hardlinks auf Verzeichnisse. Das kann Linux so nicht, und man muß das noch einmal mit tmfs fusemounten. Seufz.

# apt-get install tmfs
# mkdir -p /tmfs/tm_kk
# tmfs /hfs/tm_kk /tmfs/tm_kk
# ls -l /tmfs/tm_kk/KK/Latest/
total 0
drwxr-xr-x 1 root root 30 Oct 21 14:26 ‘Macintosh HD’

Das durchzulesen ist nicht mal langsam.

Schritt 4: Abbauen

# umount /tmfs/tm_kk
# umount /hfs/tm_kk/
# kpartx -d -v /bundles/tm_kk/sparsebundle.dmg
del devmap : loop8p1
del devmap : loop8p2
loop deleted : /dev/loop8
# umount /bundles/tm_kk

Schritt 5: Den Mist scripten

A few important comments from the WayBack2 link:

Jeroen Wiert Pluimers:

So your time machine data is on a Linux disk that you export from Linux to MacOS? (as otherwise, I don’t understand what /export/tm_kk/KK.sparsebundle is for)

Kristian Köhntopp:

Yes, I am running netatalk, SMB and NFS on an Ubuntu 18.04.

Jeroen Wiert Pluimers:

+Kristian Köhntopp Thanks. What do you envision as steps to restore a complete time machine?

Kristian Köhntopp:

We will see. I do not see that as normally necessary. Mostly I do not want to lose the work on my laptop, and am just to lazy to restrict the backup to that. In general, it should be possible to create this as a writeable setup so that I get the data back. I will probably never recreate a full runnable mac setup from this emergency offsite backup.

Tools used:

–jeroen

Posted in *nix, *nix-tools, Apple, Backup, Mac, Mac OS X / OS X / MacOS, MacBook, Power User | Leave a Comment »

Management 3.0 Practice: STAR Behavioral Interview Questions – Management 3.0

Posted by jpluimers on 2020/03/16

This works both ways: people find out about your company and your company finds out about the people.

It works for any field of work.

[WayBack] Management 3.0 Practice: STAR Behavioral Interview Questions – Management 3.0

Using the STAR behavioral interview questions can help you hire great people, for maximum employee engagement and cultural fit as well as role competence

  • Situation
  • Task
  • Action
  • Results

Via:

[WayBack] Management 3.0 Practice: STAR Behavioral Interview Questions – Management 3.0 – Marjan Venema – Google+.

–jeroen

 

Posted in Development | Leave a Comment »

Linux – How to Securely Copy Files Using SCP examples

Posted by jpluimers on 2020/03/16

I love short and to the point examples. The list of permutations for scp is at [WayBack] Linux – How to Securely Copy Files Using SCP examples.

–jeroen

Read the rest of this entry »

Posted in *nix, *nix-tools, Development, Internet protocol suite, Power User, SSH, TCP | Leave a Comment »

 
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