Rsync frequently hangs

[Brent Epp]

Hi Andrey,

Thanks, I do have some security software running, but the rsync problem 
persists when it (the security software) is disabled.

Thanks
  - Brent

Can you expand on this?
On 2020-04-17 05:07, Andrey Repin wrote:
> Greetings, Brent Epp!
>
>> I have a large collection of custom tooling that depends on rsync.  It
>> used to work very well, but recently, rsync has become highly unstable.
>> It frequently (dozens of times a day) hangs.  These are rsync executions
>> where the source and target are both on the same local drive.
>> Eventually once it times out, it reports:
>>       rsync: connection unexpectedly closed (0 bytes received so far)
>> [sender]
>>       rsync error: error in rsync protocol data stream (code 12) at
>> io.c(226) [sender=3.1.2]
>> No changes have recently been made to the tooling.  I just upgraded
>> cygwin as well, the problem persists.
>> I'm going to do a clean install of cygwin, but if that doesn't solve
>> things, what else can I do?
> Check for BLODA. Although I'm still suspicious.
> All I've seen so far is
>
> rsync error: protocol incompatibility (code 2) at receiver.c(582) [receiver=3.1.0]
> rsync error: protocol incompatibility (code 2) at io.c(1642) [generator=3.1.0]
>
> this is a link to production VPS. It consistently hangs midway the transfer.
> Like it has a clairvoyance, no matter if the upload is 1 file of 100 files,
> halfway through it drops, and I have to restart the upload, then it goes to
> complete success.
>
>