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Forum Discussion
Solved
RSYNC failure between two ReadyNAS (?)
I've added a 524x to my system for backup (was using an EDA500 off my 716) and am using rsync to do it per the instructions in the backup FAQ. Most of my jobs set up with the backup manager work ...
OK, the issue almost for sure is not using the actual IP address of the destination.
The backup manager will allow one to search for the destination NAS and will show its name (not IP address). This can be used to complete the parameters for the backup.
BUT as we've seen this apparently forces the NAS to periodically resolve the name and this can fail at any point in the backup.
Too bad, because if one is using dynamic addressing on one's local network the device addresses can change if one needs to reboot the local router. And this means going through all the backup jobs and changing the address (ugh!).
It would be simpler to resolve the name once and then store the value for the duration of the backup . . .
I think the NAS just isn't always resolving the name correctly FWIW, I use IP addresses in all my backup jobs.
hmuessig wrote:
My network is gig ethernet with Netgear switches. And the NAS reports that the transfer speeds are anywhere between 80 and 110MBps between the main nas and the backup. Buffer overrun?
Buffer overrun wouldn't be selective - and the rsync packets are routed based on IP and MAC addresses anyway.
Rsync has to figure out what it needs to transmit - which requires some back-and-forth between the client and the server. Then the real transfer begins. I think the "figuring out" bit is the main reason the network speeds will vary. The IOPS of the two RAID arrays also can limit the throughput (especially if you are dealing with a lot of small files).
OK, the issue almost for sure is not using the actual IP address of the destination.
The backup manager will allow one to search for the destination NAS and will show its name (not IP address). This can be used to complete the parameters for the backup.
BUT as we've seen this apparently forces the NAS to periodically resolve the name and this can fail at any point in the backup.
Too bad, because if one is using dynamic addressing on one's local network the device addresses can change if one needs to reboot the local router. And this means going through all the backup jobs and changing the address (ugh!).
It would be simpler to resolve the name once and then store the value for the duration of the backup . . .
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