On Nov 16, 2017, at 07:06 , Benjamin Kaduk wrote: > On Wed, Nov 15, 2017 at 01:02:15PM -0500, Matt Vander Werf wrote: >> Hello, >> >> Are there any updates or progress on a potential fix for this issue? >> Anything we can do to help figure things out? > > This topic was on the agenda for our release-team meeting yesterday.
Well, it has been for the last couple of weeks. > If I remmber correctly, multiple developers have gotten fairly > reliable ways to reproduce the issue locally. > It also seems that as a workaround, reverting > https://gerrit.openafs.org/#/c/12451/ is likely to reduce the > likelihood of triggering events. Yes, but there's at least one known client configuration (small stat cache, -disable-dynamic-vcaches) for which reverting that change actually makes things worse. I ran a number of tests again today. I was unable to trigger any issue with the EL7.3 kernel, neither with OpenAFS 1.6.20 nor 1.6.21.1 nor 1.6.21.1 with the change in question reverted. I was able to trigger the getcwd issue or the other one (a git clone into AFS space failing right away) with the EL7.4 kernel, depending on circumstances. We do have a problem with the 7.4 kernel, with or without that change. The following could be complete nonsense, so please correct me: The best bet for sites getting desperate is probably to increase the minimum stat cache size beyond typical actual use on the client. - Stephan >> We are running into more and more users encountering the issue on systems >> we have updated, forcing us to have to downgrade the kernel on them yet as >> well (including the system we were able to reproduce it on and test with >> before). Is there any other information we might provide before we do that? > > Given the assumption that developers are reproducing the same > situation that you are, hopefully there is not a need for additional > information from the production sites. > > Thanks, > > Ben _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
