On Tue, Sep 26, 2023 at 10:08 AM Chuck Lever III <chuck.lever@xxxxxxxxxx> wrote: > > > > > On Sep 26, 2023, at 12:41 AM, Mantas Mikulėnas <grawity@xxxxxxxxx> wrote: > > > > On 25/09/2023 22.22, Chuck Lever III wrote: > >>> On Sep 24, 2023, at 2:24 PM, Chuck Lever III <chuck.lever@xxxxxxxxxx> wrote: > >>> > >>>> On Sep 24, 2023, at 12:51 PM, Mantas Mikulėnas <grawity@xxxxxxxxx> wrote: > >>>> > >>>> Right, whereas on the server, the first file is filled with "Hello World (4092 bytes)" as I originally tried to narrow down the issue. > >>>> > >>>> Meanwhile, 6.4.x (Arch) clients don't seem to be having any problems with the same server, and with seemingly the same mount options. > >>>> > >>>> Thanks for looking into it!<nfs_krb5i_working_6.4client.pcap> > >>> I found /a/ problem with the nfsd-fixes branch and krb5i, but > >>> maybe not /your/ problem, and it's with a recent client. Scrounging > >>> a v5.10-vintage client is a little more work, we'll see if that's > >>> needed for confirming an eventual fix. > >> The issue I reproduced appears to be unrelated. > >> > >> I'm wondering if I can get you to bisect the server kernel using > >> your v5.10 client to test? good = v6.4, bad = v6.5 should do it. > > > > Yeah, I will try to bisect but it'll probably take a day or two. > > That's great, thank you! > > I'm looking into setting up a virtual guest with v5.10 just in case. > Turns out v5.10 does not build on Fedora latest. > I can reproduce this with upstream client do dd if=/mnt/4092byteslen of=/dev/null bs=4092 count=1 iflag=direct > -- > Chuck Lever > >