> On 27 Jun 2022, at 3:18 PM, Richard Brittain <richard.britt...@dartmouth.edu>
> wrote:
>
> I know this is a long shot, but I've got a no-quota volume of approx 6TB, and
> I'm trying to replicate it. It appears to be going fine until the packetRead
> counter reaches 2^64 and then it stops (doesn't abort).
Are you sure it's 2^64? The rx_call->rnext member is the source of the
packetRead counter, and it is type afs_uint32, so it should roll over at 2^32
(4294967296 packets). As far as I can tell, nothing would change in this
regard in 1.8.x. However, that should be plenty to move 6TB at 800-1400 bytes
per packet. So maybe something else is going on - a loop in the dump perhaps,
or something else.
Just to get things started, could you please issue the following to check the
relevant MTUs for the source and target volservers:
$ rxdebug <sourcevolserver> 7005 -noconn -peers -onlyport 7005
$ rxdebug <targetvolserver> 7005 -noconn -peers -onlyport 7005
> Servers are 1.6.22 (I thought I'd retire then before now, so didn't bother
> upgrading to 1.8.x). If 1.8 might change this limit, I can upgrade, but I
> didn't find any hints in the release notes.
>
> Based on how long it ran, my guess is > 5TB was transferred.
> Is this affected by volser buffer sizes ?
I don't know the answer to this off the top of my head; perhaps some others on
the list can chime in.
Or I may think of something else after I sleep on it.
Regards,
--
Mark Vitale
Sine Nomine Associates
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