[schilytools] star hangs randomly during copy from ZFS to ZFS

[Robert Clausecker]

Hi Lasse,

This sounds interesting.  I'll have a look at the issue and see if I can
find anything.

Did you change STAR_FIFOSIZE or similar variables in the star configuration
file?  I know that there is some sort of issue if the fifo is configured to
hold more than ~2GB, but I'm not sure if this is related to your problem.

Yours,
Robert Clausecker

Am Tue, Nov 05, 2024 at 12:01:56AM +0100 schrieb Lasse Kliemann:
> Hi Robert,
> 
> system information:
> 
> FreeBSD 14.1-RELEASE-p5 GENERIC amd64
> hw.model: Intel(R) Celeron(R) CPU J3455 @ 1.50GHz
> hw.machine: amd64
> 
> I can reproduce the issue, simply because it happens every time that I start the copy process. It does not happen at the same file or after the same amount of bytes copied though; this varies a lot - sometimes a few hundred GB, sometimes 1-2 TB.
> 
> By the way, after having copied with bsdtar (to /data2 actually, not to /test; but /data2 showed the same issue with star as /test does) and then fixing directory mtimes with rsync, I started an star process to compare the copied data with the source:
> 
> star -c -diff -vv -dump -acl diffopts='!atime,!ctime,!nsecs,!sparse' -C /data1 . /data2/.zfs/snapshot/after-copy
> 
> This is running just fine so far, but will take about 1-2 more days to complete.
> 
> Thanks,
> Lasse
> 
> Robert Clausecker on Mon 2024-11(Nov)-04 at 23:40 wrote:
> > Hi Lasse,
> >
> > Thank you for your bug report.
> >
> > What operating system and architecture do you run star on?
> > Do you have a deterministic way to reproduce this issue?
> >
> > Yours,
> > Robert Clausecker
> >
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> Kind Regards / MfG
> Dr. Lasse Kliemann
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