With net-misc/openssh-7.6_p1 I'm seeing stalls of sftp-server during transfers (server becomes unresponsive). I'm however not seeing the problem (as far as I can tell) if the transfer speed stays below 5 MByte/s. I'm not seeing the probmlem with older openssh versions. With openssh-7.5_p1-r2' sftp-server I can transfer at speeds of 25+ MBytes/s continuously without any problems. Reproducible: Always Steps to Reproduce: 1. Install said openssh version 2. Transfer data via sftp at signifikant speeds. Actual Results: sftp-server freezes/becomes unresponsive from client's perspective. Expected Results: Normally running sftp transfers.
Do you have the hpn use set? I had the problem with an SSH Git push where it was hanging (always at the same spot of 31% of 'Writing objects...'.) I disabled the hpn use flag and it works fine for me now.
(In reply to Todd Goodman from comment #1) > Do you have the hpn use set? > > I had the problem with an SSH Git push where it was hanging (always at the > same spot of 31% of 'Writing objects...'.) > > I disabled the hpn use flag and it works fine for me now. I did not purposefully enable it, but I think it is enabled in the profile. I could try recompiling with -hpn and see if that changes anything. Thanks for the input.
So, I tested 7.6_p1 again with and without USE="hpn" and now both work as expected. Unfortunately I did inbetween upgrade the client aswell. Maybe this was some sort of incompatibility or just gremlins (Even though it seemed completely reproduceable at the time of the report). I think we can mark this resolved then. Sorry for the noise.
This may be related to this issue https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878424 Some users see this problems with winscp and new openssh 7.6p1 Downgrading to 7.5 solves issue
(In reply to Alexey Shvetsov from comment #4) > This may be related to this issue > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878424 > > Some users see this problems with winscp and new openssh 7.6p1 > > Downgrading to 7.5 solves issue I was actually using WinSCP as client, when I stumbled over the problem. Can't tell which side's fault it is afterall. When testing for a longer time, I hit this again with +gpn but not with -hpn, as far as I can tell. I'd have to conduct some more clean slate tests, to make 100% sure.
Same problem. I resolve that # USE="-hpn" emerge -1 openssh
But problem not restrict only to scp. rsync over ssh, if sshd is window$ sshd have same problem.
I can confirm the problem. This is not related to WinSCP only. Seen with FileZilla 3.29.0, FlashFXP 5.4.0, Total Commander 9.1. They are all using different engines. When re-compiling without HPN, all problems are gone. > HPNDisabled yes in sshd_config had no effect, re-compilation without HPN patch set was required.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c550123e50c1cad20d35758dfe3ba9fb29b9af3a commit c550123e50c1cad20d35758dfe3ba9fb29b9af3a Author: Lars Wendler <polynomial-c@gentoo.org> AuthorDate: 2017-11-07 13:34:10 +0000 Commit: Lars Wendler <polynomial-c@gentoo.org> CommitDate: 2017-11-07 13:34:34 +0000 net-misc/openssh: Revbump to remove hpn support (breaks scp transfers) Bug: https://bugs.gentoo.org/634594 Package-Manager: Portage-2.3.13, Repoman-2.3.4 net-misc/openssh/Manifest | 1 - net-misc/openssh/{openssh-7.6_p1.ebuild => openssh-7.6_p1-r1.ebuild} | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-)}
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9cd0550422415ec40e4bf7c04acca139e9dee75c commit 9cd0550422415ec40e4bf7c04acca139e9dee75c Author: Patrick McLean <chutzpah@gentoo.org> AuthorDate: 2017-11-07 18:42:10 +0000 Commit: Patrick McLean <chutzpah@gentoo.org> CommitDate: 2017-11-07 18:42:10 +0000 net-misc/openssh: Restore 7.6_p1-r0 ebuild Some users aren't affected by bug #634594, rather than forcing them to downgrade or fork, we should keep the ebuild with hpn around. Bug: https://bugs.gentoo.org/634594 Package-Manager: Portage-2.3.13, Repoman-2.3.4 net-misc/openssh/Manifest | 1 + net-misc/openssh/openssh-7.6_p1.ebuild | 336 +++++++++++++++++++++++++++++++++ 2 files changed, 337 insertions(+)}
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=de02520f0c9d660af8a2cd0317648f69177f57c1 commit de02520f0c9d660af8a2cd0317648f69177f57c1 Author: Zac Medico <zmedico@gentoo.org> AuthorDate: 2018-01-22 02:10:08 +0000 Commit: Zac Medico <zmedico@gentoo.org> CommitDate: 2018-01-22 02:18:16 +0000 net-misc/openssh: revbumps for net-libs/ldns dep change Since sys-apps/portage-2.3.20 defaults to --dynamic-deps=n, this revbump is needed in order to correct the dependencies of installed instances of openssh. It's not possible to revbump the 7.6_p1 ebuild to 7.6_p1-r1, since the 7.6_p1-r1 ebuild already exists with the only difference being that the HPN_PATCH variable is commented out. As a compromise, make 7.6_p1-r2 include HPN_PATCH but also remove the default IUSE setting for hpn in order to suppress bug 634594 by default. Fixes: a71042d76cb4 ("net-misc/openssh: Fix net-libs/ldns dependency") Bug: https://bugs.gentoo.org/645310 Bug: https://bugs.gentoo.org/634594 Package-Manager: Portage-2.3.20, Repoman-2.3.6 RepoMan-Options: --force ...h-7.5_p1-r3.ebuild => openssh-7.5_p1-r4.ebuild} | 0 net-misc/openssh/openssh-7.6_p1-r1.ebuild | 336 --------------------- ...nssh-7.6_p1.ebuild => openssh-7.6_p1-r2.ebuild} | 4 +- 3 files changed, 2 insertions(+), 338 deletions(-)}
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4c8c40a4f54c9ec9632cf4ce424c629482541ee5 commit 4c8c40a4f54c9ec9632cf4ce424c629482541ee5 Author: Patrick McLean <chutzpah@gentoo.org> AuthorDate: 2018-01-23 00:19:05 +0000 Commit: Patrick McLean <chutzpah@gentoo.org> CommitDate: 2018-01-23 01:42:39 +0000 net-misc/openssh: Revision bump, bump X509 patch to 11.1 Also re-enable hpn USE flag (disabled by default) since it has now been package.use.mask-ed in the base profile. Bug: https://bugs.gentoo.org/634594 Package-Manager: Portage-2.3.20, Repoman-2.3.6 net-misc/openssh/Manifest | 1 + .../files/openssh-7.6_p1-hpn-x509-11.1-glue.patch | 50 +++ net-misc/openssh/openssh-7.6_p1-r3.ebuild | 335 +++++++++++++++++++++ 3 files changed, 386 insertions(+)}
Created attachment 516022 [details, diff] fix "HPNDisabled yes" to suppress the problem This patch fixes the channel_pre_open function so that the hpn code does not interfere with c->remote_window when "HPNDisabled yes" is set in sshd_config. This suppressed the sftp stall with net-ftp/filezilla-3.30.0 running on Linux.
Created attachment 516024 [details, diff] Fix the sftp stall This reintroduces the local limit variable, in order to avoid changing the c->dynamic_window attribute.
Created attachment 516026 [details, diff] Fix the sftp stall This is identical to the previous patch, but drops the last replacement of c->remote_window, in order to align the code with the behavior in the openssh-7.5p1-hpnssh14v12 patch set.
(In reply to Zac Medico from comment #15) > Created attachment 516026 [details, diff] [details, diff] > Fix the sftp stall > > This is identical to the previous patch, but drops the last replacement of > c->remote_window, in order to align the code with the behavior in the > openssh-7.5p1-hpnssh14v12 patch set. That's a very nice bug find. Can you please report it to upstream HPN as well?
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2803a8b211944e2f4f29c8ae92ba8eee86ba9d56 commit 2803a8b211944e2f4f29c8ae92ba8eee86ba9d56 Author: Patrick McLean <chutzpah@gentoo.org> AuthorDate: 2018-01-23 23:52:20 +0000 Commit: Patrick McLean <chutzpah@gentoo.org> CommitDate: 2018-01-23 23:52:20 +0000 net-misc/openssh: Add fix for bug 634594 from zmedico Not revbumping since hpn has been package.use.mask-ed. Closes: https://bugs.gentoo.org/634594 Package-Manager: Portage-2.3.20, Repoman-2.3.6 net-misc/openssh/Manifest | 1 + net-misc/openssh/files/openssh-7.6_p1-hpn-x509-11.1-glue.patch | 4 ++-- net-misc/openssh/openssh-7.6_p1-r3.ebuild | 4 ++-- 3 files changed, 5 insertions(+), 4 deletions(-)
