rsync - Aug 2020 - Meaning of "failed verification -- update retained (will try again)."

Hi,

I see some warnings like the following. Could anybody explains what
they mean? Thanks.

19/31274477.pdf
    257,169,119   0%    1.26MB/s    0:03:15 (xfr#121,
to-chk=848309/1043298)WARNING: 18/32281577.pdf failed verification --
update retained (will try again).
WARNING: 19/28879866.pdf failed verification -- update retained (will
try again).

-- 
Regards,
Peng

Mostly it means that the file rsync ended up with on the target end
didn't match the file on the source it started with.  This is mostly
caused by the file being modified on the source while rsync is copying
it but it can also be a memory corruption problem.

On 8/11/20 1:13 PM, Peng Yu via rsync wrote:
> Hi,
> 
> I see some warnings like the following. Could anybody explains what
> they mean? Thanks.
> 
> 19/31274477.pdf
>     257,169,119   0%    1.26MB/s    0:03:15 (xfr#121,
> to-chk=848309/1043298)WARNING: 18/32281577.pdf failed verification --
> update retained (will try again).
> WARNING: 19/28879866.pdf failed verification -- update retained (will
> try again).
> 
-- 
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			https://sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,

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But it seems the files are the same. Is there another possible reason? Thanks.

On 8/11/20, Kevin Korb via rsync <rsync at lists.samba.org>
wrote:
> Mostly it means that the file rsync ended up with on the target end
> didn't match the file on the source it started with.  This is mostly
> caused by the file being modified on the source while rsync is copying
> it but it can also be a memory corruption problem.
>
> On 8/11/20 1:13 PM, Peng Yu via rsync wrote:
>> Hi,
>>
>> I see some warnings like the following. Could anybody explains what
>> they mean? Thanks.
>>
>> 19/31274477.pdf
>>     257,169,119   0%    1.26MB/s    0:03:15 (xfr#121,
>> to-chk=848309/1043298)WARNING: 18/32281577.pdf failed verification --
>> update retained (will try again).
>> WARNING: 19/28879866.pdf failed verification -- update retained (will
>> try again).
>>
>
> --
>
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
> 	Kevin Korb			Phone:    (407) 252-6853
> 	Systems Administrator		Internet:
> 	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
> 	Orlando, Florida		kmk at sanitarium.net (personal)
> 	Web page:			https://sanitarium.net/
> 	PGP public key available on web site.
>
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
>
>

-- 
Regards,
Peng