Doh... That's what I was looking for... I didn't even think about mminfo
being able to return that data.
I just checked a couple of my clone volumes and there is indeed
interleaving on those volumes.
Thanks GDM!!!
Joel
-----Original Message-----
From: Giles Malet - IST [mailto:gdmalet AT IST.UWATERLOO DOT CA]
Sent: Wednesday, April 23, 2003 9:39 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Merits of cloning versus dual backups?
"Tarjei T. Jensen" <tarjei.jensen AT KVAERNER DOT COM> writes:
> The story we have been told is that cloning untangles the savesets and
> optimizes them for recover.
I heard that too, didn't trust it, and simply listed a tape. Do
something like:
# mminfo -av \
-r'volume,cloneid,mediafile,mediarec,client,name,fragsize,sumsize,totals
ize' \
yourclonevolume
and take note of the file/record numbers, and the fact that you'll see
duplicated client/name/cloneids, due to the interleaving. For example,
for a tape created by listing an original tape, gathering all the
ssids into a file, and then running `nsrclone -f file ..' I see the
following (having trimmed the above command a bit):
# mminfo -av -r'volume,cloneid,mediafile,mediarec,client,name,fragsize'
240516 | head -20
volume clone id file rec client name
size
240516 1051083189 2 1 lagavulin /files6
6584 MB
240516 1051086778 2 1 soar /datasets
3960 MB
240516 1051086187 2 1 sun580 /fsys1
1925 MB
240516 1051079822 2 1 sunwise /usr1
213 MB
240516 1051083509 2 1 temagami /home
1846 MB
240516 1051087831 2 1 thunderbox /u2
1181 MB
240516 1051084462 2 1 tyrant /fsys2
4303 MB
240516 1051080556 2 1 uwcfd /export/home
187 MB
240516 1051082754 2 1 uwdepot E:\
4156 MB
240516 1051083189 3 0 lagavulin /files6
6645 MB
240516 1051087831 3 0 thunderbox /u2
1202 MB
240516 1051084462 3 0 tyrant /fsys2
4354 MB
240516 1051082754 3 0 uwdepot E:\
4197 MB
240516 1051086187 3 1 sun580 /fsys1
1943 MB
240516 1051083509 3 1 temagami /home
1864 MB
240516 1051080556 3 4 uwcfd /export/home
188 MB
240516 1051086778 3 6 soar /datasets
4026 MB
240516 1051079822 3 58 sunwise /usr1
214 MB
240516 1051083189 4 0 lagavulin /files6
6697 MB
There's some obvious interleaving there. Note lagavulin for example.
Perhaps some other command causes the interleaving to be removed? That
would make cloning real slow.
gdm
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