Rsync for back up, external HD Post: 302825071

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Operating Systems OS X (Apple) Rsync for back up, external HD Post 302825071 by marek on Sunday 23rd of June 2013 09:52:35 AM

06-23-2013

Registered User

Thank you vbe and del for your hints!

Sorry for answering so late. I have had to read tons of manual pages of rsync, cp, dd, cpio, tar, rsnapshot.

My question was concerning an exact backup of my HD on a USB-HD and how to do it incrementally.

@drl

Off course rsync is also a tool for external HDs not only over network.

If I am right the command I will use in future is the following to make a incremental backup - you may still prevent a catastrophe with some helpful hints:

Code:

sudo rsync -tavu --delete / /Volumes/backup_2013/

The option -t preserves modification times. -a archive mode. -v verbose. -u update (only newer files are transferred - this switch I was looking for). --delete means all files which are deleted on the source HD are deleted on the destination too. Because I asked for an exact copy of my actual HD, this is the option I was looking for.

To make the external HD bootable (MacOS Lion) I have to make some researches again ... It is for a later post. (I am not sure, whether it will possible with an encrypted HD).

marek

---------- Post updated at 03:52 PM ---------- Previous update was at 02:23 PM ----------

To make the external HD bootable (only to make this thread complete for some MacOS X users):

First try: I opened the HD Utility in the Utilities folder. I was hoping to find something like "Make Disk Bootable", but no help. I will not claim, that there is no such "button". I simply did not find it.

I have no Install MacOS X Disk Image in my Applications Folder. My idea was, to run the installer over the external HD to make it bootable. But to download this large installer file over the App Store, just to make an external HD bootable, I thought that this is overkill. So I decided to try the following and it worked:

The old version of CCC (Carbon Copy Cloner), which is now payable, is working! I just have had to run a copy of the HD over the external HD ...

I expected from this forum, to help me to find the right switches for rsync, and perhaps tell me, how to make an external HD bootable over the Shell. Disappointed!

Hope this helps somebody out there

marek

marek

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rsync_selinux

rsync_selinux(8)					rsync Selinux Policy documentation					  rsync_selinux(8)

NAME

       rsync_selinux - Security Enhanced Linux Policy for the rsync daemon

DESCRIPTION

       Security-Enhanced Linux secures the rsync server via flexible mandatory access control.

FILE_CONTEXTS
       SELinux	requires  files to have an extended attribute to define the file type.	Policy governs the access daemons have to these files.	If
       you want to share files using the rsync daemon, you must label the files and directories public_content_t.  So if  you  created	a  special
       directory /var/rsync, you would need to label the directory with the chcon tool.

       chcon -t public_content_t /var/rsync

       To make this change permanent (survive a relabel), use the semanage command to add the change to file context configuration:

       semanage fcontext -a -t public_content_t "/var/rsync(/.*)?"

       This command adds the following entry to /etc/selinux/POLICYTYPE/contexts/files/file_contexts.local:

       /var/rsync(/.*)? system_u:object_r:publix_content_t:s0

       Run the restorecon command to apply the changes:

       restorecon -R -v /var/rsync/

SHARING FILES

       If  you	want  to  share  files	with multiple domains (Apache, FTP, rsync, Samba), you can set a file context of public_content_t and pub-
       lic_content_rw_t.  These context allow any of the above domains to read the content.  If you want a particular domain to write to the  pub-
       lic_content_rw_t domain, you must set the appropriate boolean.  allow_DOMAIN_anon_write.  So for rsync you would execute:

       setsebool -P allow_rsync_anon_write=1

BOOLEANS

       system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR

       This manual page was written by Dan Walsh <dwalsh@redhat.com>.

SEE ALSO

       selinux(8), rsync(1), chcon(1), setsebool(8), semanage(8)

dwalsh@redhat.com						    17 Jan 2005 						  rsync_selinux(8)