Newbie questions for using Legato with a jukebox...

[rangerbob]

Howdy.

I have a Sun E220R ad a HP Surestore 6 tape jukebox that uses 12Gb DDS3 tapes. I have installed Legato 6.0.1 build 174.

I want to be able to back up this filesystem:

kbytes used avail capacity Mounted on
3008649 1137234 1811243 39% /
3008649 884699 2063778 31% /usr
1984564 50933 1874095 3% /var
1984564 1051625 873403 55% /opt
3564904 88 3564816 1% /tmp
24898610 18527972 6121652 76% /home


Basically its a (mirrored pair) 34 Gb drive sliced up. Obviously as the system stands now, I exceed one tape for capacity unless I compress the data. I'd like to do uncompressed full backups that span 2 tapes, one for /home and the other for the rest of the filesystem for archival purposes.

The easy answer is RTFM. I have read the Sun Solstice 6.0 Administrators guide, and unfortunately it leaves me dazed and confused as to how I should do anything with Legato. Is there a readable manual out there either paper or bits & bytes, that I can get simple examples on how to do something? All of the "Page 145: set up a pool (See page 147) and then on Page 147 it says (see page 145)" is making my head hurt.

Thanks in advance for tolerating my simple ignorance.

 

[mgdaviso]

I guess you want /home on one set of tapes and the other file systems on a physical different set of tapes. If this is the case, then a pool is the answer. Please confirm this, and I'll tell you how to do it. Mike davison
mike.davison@avon.com

 

[rangerbob]

That makes sense to me to use two pools for backups. The /home filesystem is going to be changing often and is growing. The rest remains fairly static but I still want a weekly backup for posterity.

Ideally I would like nightly incrementals of /home and then weekly backups of all of the data. I would like to avoid compressing the data, but does not have to be the case.

Right now I am using Gnutar tar -cvzpf /dev/rmt/0cbn /home, but the filesystem is too big and I get an IO error and have to slice it up into bunches. That is the whole point of the autochanger...

Thanks for the offer of advice on how to set up pools. The manual makes frequent mention of them, but nothing like a set of steps to create or use them...

If I had a 40 GB DLT, then the default installation of "back up everything every night" would work, but the autochanger brings a whole new dimenson to that...

Thanks in Advance.

RangeR BoB
--
Robert C. Hembrook
Systems Administrator, USSC-Austin
Motorola Global Software Group
phone: (512) 996-7692
cell: (512) 801-8241
fax: (512) 996-7320

 

[mgdaviso]

using Networker on solaris: nwadmin&

Firstly create two clients, one backing up /home, one backing up the rest, make sure they are in different save groups. (I presume you know how to do this already)

Now create your pools:
Select MEDIA
Select POOLS
Select CREATE
Enter a name for pool 1 (eg: Daily Pool)
Check "enabled"
Pool type: backup
Check the groups you wish to use this pool (Ensure you only check the group that has the client with /home in it)
Check "Store index entries"
Check "Recycle to other pools"
Check "Recycle from other pools"
(These last two steps, if checked for all pools, should ensure that you don't run out of tapes)

Ignore any other fields.

Do the same for the second pool for the rest of the filesystem. (eg: Weekly Pool) Only this time check the group for the weekly client.


Make sure your "default" pool, or the pool you currently have have all your tapes in has the allow "recycle to/from other pools" buttons checked, otherwise you won't get any scratch tapes being reallocated into your new pools

eg:
savegroup: DAILY
contains: client_1 (/home)
pool: DAILY POOL

savegroup: WEEKLY
contains: client_1 (/other filesystems)
pool: WEEKLY POOL

We do this at avon, by writing the daily and weekly backups to separate pools, they end up on different physical tapes.
more questions? Post here or email me.
Good luck. Mike davison
mike.davison@avon.com