Re: releng/13 release/13.0.0 : odd/incorrect diff result over nfs (in a zfs file systems context) [RPi4B genet0 involved in problem]
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Date: Fri, 21 May 2021 08:05:16 UTC
[Looks like the RPi4B genet0 handling is involved.] On 2021-May-20, at 22:56, Mark Millard <marklmi at yahoo.com> wrote: > > On 2021-May-20, at 22:19, Rick Macklem <rmacklem at uoguelph.ca> wrote: > >> Ok, so it isn't related to "soft". >> I am wondering if it is something specific to what >> "diff -r" does? >> >> Could you try: >> # cd /usr/ports >> # ls -R > /tmp/x >> # cd /mnt >> # ls -R > /tmp/y >> # cd /tmp >> # diff -u -p x y >> --> To see if "ls -R" finds any difference? >> > > # diff -u -p x y > --- x 2021-05-20 22:35:48.021663000 -0700 > +++ y 2021-05-20 22:39:03.691936000 -0700 > @@ -227209,10 +227209,10 @@ patch-chrome_browser_background_background__mode__mana > patch-chrome_browser_background_background__mode__optimizer.cc > patch-chrome_browser_browser__resources.grd > patch-chrome_browser_browsing__data_chrome__browsing__data__remover__delegate.cc > +patch-chrome_browser_chrome__browser > patch-chrome_browser_chrome__browser__interface__binders.cc > patch-chrome_browser_chrome__browser__main.cc > patch-chrome_browser_chrome__browser__main__linux.cc > -patch-chrome_browser_chrome__browser__main__posix.cc > patch-chrome_browser_chrome__content__browser__client.cc > patch-chrome_browser_chrome__content__browser__client.h > patch-chrome_browser_crash__upload__list_crash__upload__list.cc > > # find /usr/ports/ -name 'patch-chrome_browser_chrome__browser*' -print | more > /usr/ports/devel/electron12/files/patch-chrome_browser_chrome__browser__main__linux.cc > /usr/ports/devel/electron12/files/patch-chrome_browser_chrome__browser__main.cc > /usr/ports/devel/electron12/files/patch-chrome_browser_chrome__browser__main__posix.cc > /usr/ports/devel/electron12/files/patch-chrome_browser_chrome__browser__interface__binders.cc > /usr/ports/www/chromium/files/patch-chrome_browser_chrome__browser__main__posix.cc > /usr/ports/www/chromium/files/patch-chrome_browser_chrome__browser__main.cc > /usr/ports/www/chromium/files/patch-chrome_browser_chrome__browser__main__linux.cc > /usr/ports/www/chromium/files/patch-chrome_browser_chrome__browser__interface__binders.cc > > find /mnt/ -name 'patch-chrome_browser_chrome__browser*' -print | more > /mnt/devel/electron12/files/patch-chrome_browser_chrome__browser__main__linux.cc > /mnt/devel/electron12/files/patch-chrome_browser_chrome__browser__main.cc > /mnt/devel/electron12/files/patch-chrome_browser_chrome__browser__main__posix.cc > /mnt/devel/electron12/files/patch-chrome_browser_chrome__browser__interface__binders.cc > /mnt/www/chromium/files/patch-chrome_browser_chrome__browser > /mnt/www/chromium/files/patch-chrome_browser_chrome__browser__main.cc > /mnt/www/chromium/files/patch-chrome_browser_chrome__browser__main__linux.cc > /mnt/www/chromium/files/patch-chrome_browser_chrome__browser__interface__binders.cc > > So: patch-chrome_browser_chrome__browser appears to be a > truncated: patch-chrome_browser_chrome__browser__main__posix.cc > file name and find also gets the same oddity. > > (Note: This had /usr/ports in a main context and /mnt/ > referring to a release/13.0.0 context.) > >> ps: I do not think that r367492 could cause this, but it would be >> nice if you try a kernel with the r367492 patch reverted. >> It is currently in all of releng13, stable13 and main, although >> the patch to fix this is was just reviewed and may hit main soon. > > Do you want a debug kernel to be used? Do you have a preference > for main vs. stable/13 vs. release/13.0.0 based? Is it okay to > stick to the base version things are now based on --or do you > want me to update to more recent? (That last only applies if > main or stable/13 is to be put to use.) > >> . . . old history deleted . . . I reversed the roles of the faster vs. somewhat slower machine and so far my diff -r attempts for this found no differences. The machines were using different types of EtherNet devices. So I've substituted a different EtherNet device onto the slower machine: the same type of USB3 EtherNet device in use on the faster machine (instead of using the RPi4B's builtin EtherNet). So the below testing is with both machines having a: ugen0.6: <Realtek USB 10/100/1000 LAN> at usbus0 ure0 on uhub0 ure0: <Realtek USB 10/100/1000 LAN, class 0/0, rev 3.00/30.00, addr 5> on usbus0 miibus1: <MII bus> on ure0 rgephy0: <RTL8251/8153 1000BASE-T media interface> PHY 0 on miibus1 rgephy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, 1000baseT-FDX-master, auto in use. I rebooted with this connected instead of the genet0 interface. Mounting the slower machine's /usr/ports/ as /mnt/ from the faster machine: No differences found by diff -r this way (expected result). Mounting the faster machine's /usr/ports/ as /mnt/ from the slower machine: No differences found by diff -r this way (expected result). Doing diff -r's from both sides at the same time: No differences found by diff -r this way (expected result). So it looks like genet0 or its supporting software is contributing to the problems that I had reported. It is interesting that there were no examples of the content of files reporting a mismatch, just some file names/paths not finding matches, some with truncated names or obvious-garbage bytes in names. Note: The faster machine is a MACCCHIATObin Double Shot. The slower machine is a RPi4B 8 GiByte. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)