Hello,
We use Legato Networker 6.1.2 build 340 on a Solaris 2.8 box to backup a
couple of Network Appliance F802's via NDMP (as well as a bunch of Unix
servers). The unix boxes are backed up in different pools to a DLT8000
locally attached to the Sun Ultra 60 while the two Netapp's backup via NDMP
to a DLT8000 locally attached to netapp1. The backup for netapp1 is
running fine on Saturday, but the Sunday night backup of netapp2 keeps
failing because /nsr fills up and everything freezes/aborts. netapp1 has
68GB of data to backup while netapp2 (which is failing) has 128GB of data.
Each Netapp/client is configured identically on the Legato server with a
backup command of "nsrndmp_save -T dump", Application information:
"DIRECT=y, HIST=y, and UPDATE=y"; and Savesets for both are: /vol/vol0 and
/vol/vol1. Networker indexes are on a dedicated (25GB, 20GB of which is in
use) filesystem of their own (/nsr/index) so /nsr/tmp is on the 475MB /nsr
filesystem which only has 113mb free. I gave all the space to /nsr/indexes
because, other than /nsr/logs, little previously grew in size other than the
indexes. In fact, we've been backing up these 2 NetApps this for quite some
time and this has never happened until a week ago.
What I see, when I run something like sudo savegrp -n -l full -r 2 -c
netapp1 'NETAPP1'
is that scratch/temp looking files are created in /nsr/tmp. This happens
for *either* netapp so I don't think the fact the DLT is on the one not
failing is the problem (but I really don't know yet). Here is an example of
the files created by the above command:
-rw-r--r-- 1 root other 20314208 Mar 17 11:24 2fhdir21196
-rw-r--r-- 1 root other 1394100 Mar 17 11:25 2fhnode21196
What I am trying to find out is:
1. I am assuming that Legato buffers to these files because the network
(Gigabit) is faster than the tape can handle and thus turning off this
intermediate file write is impossible and/or not-adivsable. If those
assumptions are wrong, please correct me.
2. Is it possible to redirect the scratch/buffer file somewhere else from
within Legato or should I just link /nsr/tmp to another filesystem?
3. Since /nsr/index has all the space, would it harm performance horribly if
I linked /nsr/tmp there? /nsr/index is just a a few mirrored disks in a
diskpack so disk throughput is already not the best, but so far it has been
sufficient for our overnight coldbackups shop.
4. What are the sizing requirements for thes scratch/buffer files so I can
properly plan for growth? I.e. something like "Legato uses 1.5K per MB"
(which is what it would be if netapp1's 68GB was just filling up the 113MB
free.
5. Is there a more thorough source of info/documentation that I missed?
The main document I used when I set all this up many months ago (and it has
been working fine, done restores and all that) is the Legato Networker,
Release 6.1 Unix Version Administrator's guide. If there is a better
document covering setup/tweaking, etc. then I missed it and would appreciate
a pointer to that as well.
My apologies if all this was alread covered, I checked the archives, google,
and websupport and found no addition information. So if I missed a thread
or subject that would get me to the correct information, please redirect me.
thanks for any info, background, pointers, etc.
Adam
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