On 11/10/2016 3:43 AM, Kern Sibbald wrote:
Hello,
Where are you running the script? On the Director or on the Client.
Once I have a better idea what you are doing, I can provide a
definitive answer. It is possible that Bacula is not in control when a
script is running and that it does not get control to issue the
Heartbeat, but I would have to check because in most cases (in the SD
and the FD) there are separate threads that keep the heartbeat
running. I recommend that you set the heartbeat interval at 300. 60
seconds is way too short in my view and may be a cause of your
problem. In addition, if it is the FD that is timing out, you must be
very careful to setup the heartbeat on both the Director and the FD.
The internet standard is 2 hours, and Bacula always request that the
network keep the network up, so in fact a 15 minute timeout is too
short by internet standards and good quality switches should respect
the KEEP_ALIVE request that Bacula issues -- unfortunately most
switches do not.
My experience is that it is not the KEEP_ALIVE requests not being
honored, but rather the handling (or mishandling) of the return from
802.3az Low Power Idle state. Disabling 802.3az support in the NIC
driver on both ends seems to help. It definitely works if there is only
one switch in between, since 802.3az requires backward compatibility.
Even if only one of the NICs has 802.3az disabled, the other is supposed
to work in legacy/standard mode. So the NIC-to-switch link can be placed
in legacy/standard mode, but it is not clear (at least to me) how this
affects any switch-to-switch links when there are multiple switches
between the two NICs. In any case, I recommend returning the heartbeat
and socket timeouts to their default values and then try disabling
802.3az support for the affected NICs.
Final comment: your Bacula version is *very* old, and though I only
remember early (when I am not sure) changes to the heartbeat, it is
possible that later versions do a much better job.
Best regards,
Kern
On 11/10/2016 08:43 AM, Jan Gazda wrote:
Hello all,
I have a problem with network timeout during backup.
Backup server with bacula is on different subnet than clients and
there is a Sonicwall with 15 minutes timeout for TCP connection.
I set up Heartbeat interval to 60 seconds but it seems that heartbeat
is not issued during script which backs up the database and when it
takes longer the firewall just breaks the connection and backup fails.
My client versions:
bacula-client-5.0.3-1
bacula-client-5.2.13-19
Current workaround was to extend the timeout but it is not really a
temporary solution.
Thank you
Jan
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