A user reported to me that they couldn't see the entirety of their home directory. And indeed: [root@ld00 ~]# ls -l ~dblecher|wc -l ls: reading directory '/home/dblecher': Input/output error 1844 [root@ld00 ~]# cat /proc/version Linux version 5.1.20-300.fc30.x86_64 (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 9.1.1 20190503 (Red Hat 9.1.1-1) (GCC)) #1 SMP Fri Jul 26 15:03:11 UTC 2019 Mount options are: nfs4 rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=krb5i The server is running CentOS 7 (kernel 3.10.0-957.12.2.el7.x86_64). The problem does not appear in 5.1.19 and all 7657 entries in that directory are returned. Looking at the 5.1.20 changelog I see a few NFS-related changes but commit 3536b79ba75ba44b9ac1a9f1634f2e833bbb735c: Revert "NFS: readdirplus optimization by cache mechanism" (memleak) stands out; I'm working on building a kernel with the revert reverted. Note that this doesn't happen on any directory with lots of files; I've only managed to see it on this particular user's overly large home directory. So I can trivially reproduce it but I don't know how anyone else could. I'm happy to collect any debugging data that might be needed. - J<
