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So.. I have to weigh in here.. I don't know if people know i do the
classes for freenas, but you can use it as a gui for both formatting
drives and replication.. and it's free. and it has time machine..<br>
<br>
In my environment I just has a small nas box that i backup to all of
my systems including my macs. <br>
<br>
I just saw rsync.net will take zfs receives and charge .06 per GB
per month for zfs.<br>
<br>
linda<br>
<br>
<div class="moz-cite-prefix">On 9/4/15 2:28 PM, Jeff Chapin wrote:<br>
</div>
<blockquote
cite="mid:CAJt84+MHvY8reU61pWHcEd1WgsOQia+SmakHHke4ZL4gQL=c3Q@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>The script would take a little tweaking, but it could
work.<br>
<br>
</div>
I, personally, know that I would get lazy at some point and
fail to swap the drives for months on end. I would consider
taking one of the drives to both locations, and getting an
initial backup of each location, and then mirroring that to
the other drive -- and then have both locations back up to
both drives. Alternatively, you could backup both drives to
the local drive, and then mirror the two drives(you could do
hourly local backups, and nightly remote copies). Since rsync
only transfers the differences, once you have the initial
backup, it's likely that each day's change is fairly small. If
you use the flag to make rsync aware of the hardlinks, you
could presumably replicate a full copy of the day's hourly
backups fairly quickly.<br>
<br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Sep 4, 2015 at 2:17 PM, Mike
Miller <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mbmiller+l@gmail.com" target="_blank">mbmiller+l@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">That is
really cool! I'll have to try something like that. I'm
thinking a good strategy is to have two drives, both with
all the same stuff on them, and I'll use them both to backup
all my Linux boxes (home, office, laptops). I'll just
switch between home and office every week or so. That way if
my house burns down or my office is burglarized, I still
have a copy of everything from last week at the other
location.<br>
<br>
Does that seem reasonable? The thing I'm not sure of is how
that strategy would work with the "time machine" concept --
I'd be using two drives and swapping them weekly.<span
class="HOEnZb"><font color="#888888"><br>
<br>
Mike</font></span>
<div class="HOEnZb">
<div class="h5"><br>
<br>
<br>
On Fri, 4 Sep 2015, Jeff Chapin wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Looking at the rsync command you gave, it looks
correct -- but rsync can do<br>
so much more when backing up!<br>
<br>
Using the magic of rsync, and the magic of hardlinks,
you can make a full<br>
backup, in incremental time and space. Rsync has,
built into it, the<br>
ability to compare your most recent backup files with
existing backup<br>
files, and if they are they same, use a hard link, and
copy them over if<br>
they differ. This allows you to store just the files
that change -- but it<br>
looks like a full backup every time it runs. This way,
you can keep, say,<br>
hourly backups for the last week -- and recover an
accidentally deleted or<br>
altered file, even after the latest backup has run.<br>
<br>
For more details:<br>
<a moz-do-not-send="true"
href="https://blog.interlinked.org/tutorials/rsync_time_machine.html"
rel="noreferrer" target="_blank">https://blog.interlinked.org/tutorials/rsync_time_machine.html</a><br>
<br>
<br>
<br>
On Fri, Sep 4, 2015 at 8:21 AM, T L <<a
moz-do-not-send="true"
href="mailto:tlunde@gmail.com" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:tlunde@gmail.com">tlunde@gmail.com</a></a>>
wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Assuming that you have NOTHING on the drive that you
care about, I would<br>
remove the factory partitioning and create a new GPT
table with parted.<br>
<br>
Then, format that as ext4.<br>
On Sep 3, 2015 3:17 PM, "Mike Miller" <<a
moz-do-not-send="true"
href="mailto:mbmiller%2Bl@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:mbmiller+l@gmail.com">mbmiller+l@gmail.com</a></a>>
wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
How to format?<br>
<br>
I have a couple of Linux boxes that I would like
to regularly backup to a<br>
5 TB external drive. It seems like it would be a
good idea to format that<br>
drive with ext4. Can I just do that with
gparted? The drive comes with<br>
NTFS format. Are there any issues I should know
about?<br>
<br>
<br>
Which directories to back up?<br>
<br>
What really needs to be backed up? I guess if the
system totally failed<br>
I'd install Linux (Ubuntu) again. Of course /home
is needed, but<br>
/usr/local and /opt often have programs I've
installed and /etc will have a<br>
bunch of settings. I guess /var can have some
important stuff. Are<br>
crontabs stored in /var?<br>
<br>
<br>
Which software to use for backup?<br>
<br>
I guess I want only to have in backup what is on
the originating drive.<br>
So if I have deleted a file, I want it to be
deleted on the backup drive,<br>
too. I assume rsync can do this. Would this be
correct?:<br>
<br>
rsync -av --update --delete /home /usr/local /etc
/var /opt /media/me/back<br>
<br>
<br>
TIA!<br>
<br>
Mike<br>
_______________________________________________<br>
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</blockquote>
<br>
_______________________________________________<br>
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<br>
<br>
</blockquote>
<br>
<br>
-- <br>
Jeff Chapin<br>
President, CedarLug, retired<br>
President, UNIPC, "I'll get around to it"<br>
President, UNI Scuba Club<br>
Senator, NISG, retired<br>
<br>
</blockquote>
_______________________________________________<br>
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota<br>
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href="mailto:tclug-list@mn-linux.org" target="_blank">tclug-list@mn-linux.org</a><br>
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rel="noreferrer" target="_blank">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a><br>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature">Jeff Chapin<br>
President, CedarLug, retired<br>
President, UNIPC, "I'll get around to it"<br>
President, UNI Scuba Club<br>
Senator, NISG, retired</div>
</div>
<br>
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<br>
<pre wrap="">_______________________________________________
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
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<a class="moz-txt-link-freetext" href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Linda Kateley
Kateley Company
Skype ID-kateleyco
<a class="moz-txt-link-freetext" href="http://kateleyco.com">http://kateleyco.com</a>
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