Hello, I am seeing strange behaviors with a single nfsv3 mount on linux v4.1.x. I first started to see two kworker in D state while I was not doing anything. The server is an opensolaris nfs server. If I try to get more info I am seeing getattr loop as follow: echo 65535 > /proc/sys/sunrpc/nfs_debug NFS call getattr NFS reply getattr: 0 NFS: nfs_update_inode(0:15/22630 fh_crc=0x1df1ef00 ct=1 info=0x27e7f) NFS: (0:15/22630) revalidation complete NFS: nfs_lookup_revalidate(x86_64-linux-gnu/libc-2.19.so) is valid NFS: permission(0:15/22630), mask=0x24, res=0 NFS: open file(x86_64-linux-gnu/libc-2.19.so) NFS: dentry_delete(x86_64-linux-gnu/libc.so.6, 6808cc) NFS: read(x86_64-linux-gnu/libc-2.19.so, 832@0) NFS: mmap(x86_64-linux-gnu/libc-2.19.so) NFS: mmap(x86_64-linux-gnu/libc-2.19.so) NFS: flush(x86_64-linux-gnu/libc-2.19.so) NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/etc) is valid NFS: permission(0:15/12), mask=0x81, res=0 NFS: nfs_lookup_revalidate(etc/ld.so.nohwcap) is valid NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/lib) is valid NFS: permission(0:15/14), mask=0x81, res=0 NFS: nfs_lookup_revalidate(lib/x86_64-linux-gnu) is valid NFS: permission(0:15/1178), mask=0x81, res=0 NFS: nfs_lookup_revalidate(x86_64-linux-gnu/libpthread.so.0) is valid NFS: permission(0:15/1178), mask=0x1, res=0 NFS: revalidating (0:15/22644) NFS call getattr NFS reply getattr: 0 NFS: nfs_update_inode(0:15/22644 fh_crc=0x9a566cc1 ct=1 info=0x27e7f) NFS: (0:15/22644) revalidation complete NFS: nfs_lookup_revalidate(x86_64-linux-gnu/libpthread-2.19.so) is valid NFS: permission(0:15/22644), mask=0x24, res=0 NFS: open file(x86_64-linux-gnu/libpthread-2.19.so) NFS: dentry_delete(x86_64-linux-gnu/libpthread.so.0, 6808cc) NFS: read(x86_64-linux-gnu/libpthread-2.19.so, 832@0) NFS: mmap(x86_64-linux-gnu/libpthread-2.19.so) NFS: mmap(x86_64-linux-gnu/libpthread-2.19.so) NFS: flush(x86_64-linux-gnu/libpthread-2.19.so) NFS: release(etc/ld.so.cache) NFS: dentry_delete(etc/ld.so.cache, 4808cc) NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/root) is valid NFS: permission(0:15/20), mask=0x81, res=0 NFS: nfs_lookup_revalidate(root/.config) is valid NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/etc) is valid NFS: permission(0:15/12), mask=0x81, res=0 NFS: nfs_lookup_revalidate(etc/terminal-colors.d) is valid NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/dev) is valid NFS: permission(0:15/4), mask=0x81, res=0 NFS: nfs_lookup_revalidate(/var) is valid NFS: permission(0:15/27), mask=0x81, res=0 NFS: nfs_lookup_revalidate(var/lib) is valid NFS: permission(0:15/19882), mask=0x81, res=0 NFS: revalidating (0:15/19990) [...] Do you have some hints in order to help debug this issue? If I reboot using my older v3.14.x with same config, I don't have that behavior. Best regards, -- William
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