[OmniOS-discuss] Mbuffer breaks

[Richard Elling]

On May 27, 2013, at 10:01 AM, Ram Chander <ramquick at gmail.com> wrote:

> Hi,
> 
> Am transferring Zfs snapshot using mbuffer. But after sometime, it stalls and breaks with below error.  I retried 3 times but breaks with same error ( happens randomly  after transferring 40G, 120G, etc ).
> 
> Please help in this.
> 
> At source :
> 
> #  zfs send   pool at snap   | /opt/csw/bin/pigz -p 16  |  /usr/local/bin/mbuffer -t -m 8G -O 10.75.70.12:9090
> in @  0.0 KiB/s, out @  0.0 KiB/s, 42.0 GiB total, buffer 100% full
> mbuffer: error: outputThread: error writing to 10.75.70.12:9090 at offset 0xa7eeef000: Broken pipe

mbuffer isn't broken, something in the pipeline quit unexpectedly. mbuffer is simply reporting the fact.
These can be tricky to debug, unless you've captured stderr somewhere.
 -- richard

> 
> summary: 42.0 GiByte in 3 h 25 min 3575 KiB/s
> mbuffer: warning: error during output to 10.75.70.12:9090: Broken pipe
> 
> 
> At destination:
>  /usr/local/bin/mbuffer -t  -m 8G -I  9090 | /opt/csw/bin/pigz -p 16 -d | zfs receive -F pool
> 
> 
> # /usr/local/bin/mbuffer -V
> mbuffer version 20130220
> Copyright 2001-2011 - T. Maier-Komor
> License: GPLv3 - see file LICENSE
> This program comes with ABSOLUTELY NO WARRANTY!!!
> Donations via PayPal to thomas at maier-komor.de are welcome and support this work!
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-- 

ZFS storage and performance consulting at http://www.RichardElling.com