1 From stephan.ebelt@net-linx.com Fri Apr 7 21:01:24 2006
2 From: Stephan Ebelt <stephan.ebelt@net-linx.com>
3 Subject: [Bacula-devel] DVD + packet writing + UDF
7 is anyone using this approach in production?
9 I do for about a week now. And it appears to be easier to setup and is,
10 in fact, quite media independent. (I actually gave up on trying the
11 growisofs/dvd-handler method - bacula constantly rejected most of my
14 Here is how it works for me (all done with bacula 1.38.5 on FC4 with the
15 udftools package installed):
17 1. load udf file system support (modprobe udf)
19 2. create a packet writing device on top of the dvd drive (pktsetup
22 3. format a blank media with UDF file system (mkudffs --media-type=dvd
23 /dev/pktcdvd/dvd-writer), I tried with DVD-RAM, DVD+RW and CD-RW
24 media. All appear to work fine - at different speeds of course.
26 4. mount the freshly formatted media (mount -t udf
27 /dev/pktcdvd/dvd-writer /mnt/dvd-writer -o noatime). Note that
28 'noatime' makes the media living longer.
30 5. configure the SD as it would write to hard disk:
36 ArchiveDevice = /mnt/dvd-writer
38 LabelMedia = no # I want only one Volume per DVD
44 Now the whole thing can be automated further: steps 1, 2 and 5 are
45 one-time system setup.
47 Step 3 would require some logic to determine whether a media really is
48 blank. I guess something the like is already in dvd-handler?.
50 Step 4 should be automatic with 1.39.5+ (with the RequiresMount,
51 MountPoint, MountCommand... etc... options being more general). I havn't
54 I do not know how stable this is yet. I am a bit concerned because I
55 read in a older mail (from Nicolas Boichat, end of 2004) that he
56 considered packet-writing/UDF as not reliable enough at that time.
58 However, the few restores I tried were all successful. Also I can read
59 the DVDs on at least one other computer. Maybe the UDF and pkcdvd code
60 matured in the meantime? I'll leave it running here and keep on testing...
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