ADSM-L

Re: Large Linux clients

2005-03-29 13:41:20
Subject: Re: Large Linux clients
From: Zoltan Forray/AC/VCU <zforray AT VCU DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Tue, 29 Mar 2005 13:39:46 -0500
Here ya go. Pretty much no limits. I am open to suggestions on values to
change that might help !

FWIW, this is RH8 as a Beowulf cluster, so NO, I can not upgrade the OS.

Also, while on the subject, I read the "requirements" on the 5.3.x client,
that says it has only been tested on RH AS 3. Anyone try the V5.3 client
on RH8 ?

[root@coyote root]# ulimit -a
core file size        (blocks, -c) 0
data seg size         (kbytes, -d) unlimited
file size             (blocks, -f) unlimited
max locked memory     (kbytes, -l) unlimited
max memory size       (kbytes, -m) unlimited
open files                    (-n) 1024
pipe size          (512 bytes, -p) 8
stack size            (kbytes, -s) 8192
cpu time             (seconds, -t) unlimited
max user processes            (-u) 4092
virtual memory        (kbytes, -v) unlimited



Richard Sims <rbs AT BU DOT EDU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
03/29/2005 01:11 PM
Please respond to
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


To
ADSM-L AT VM.MARIST DOT EDU
cc

Subject
Re: [ADSM-L] Large Linux clients






On Mar 29, 2005, at 12:37 PM, Zoltan Forray/AC/VCU wrote:

> ...However, then I try to backup the tree at the third-level (e.g.
> /coyote/dsk3/), the client pretty much siezes immediately and
> dsmerror.log
> says "B/A Txn Producer Thread, fatal error, Signal 11".  The server
> shows
> the session as "SendW" and nothing going else going on....

Zoltan -

Signal 11 is a segfault - a software failure.
The client programming has a defect, which may be incited by a problem
in that area of the file system (so have that investigated). A segfault
can be induced by memory constraint, which in this context would most
likely be Unix Resource Limits, so also enter the command 'limit' in
Linux csh or tcsh and potentially boost the stack size ('unlimit
stacksize'). This is to say that the client was probably invoked under
artificially limited environmentals.

    Richard Sims

<Prev in Thread] Current Thread [Next in Thread>