Hi,
I have an issue exporting an aufs filesystem usiing nfsv3, I can mount NFS export with success but I get an error reading a file or a directory. Into syslog I see: [ 183.774819] aufs aufs_encode_fh:763:nfsd[1467]: nfs encode_fh failed The error on shell: [CLIENTc7]# ls /mail/01/BOX1/Maildir/ ls: cannot access /mail/01/BOX1/Maildir/: Input/output error [CLIENTc7]# cat /mail/01/BOX1/Maildir/maildirsize cat: /mail/01/BOX1/Maildir/maildirsize: Input/output error Instead mounting a similar exports using nfsv4, I get success: [CLIENTc7]# ls /mail/03/BOX1/Maildir/ maildirsize [CLIENTc7]# cat /mail/03/BOX1/Maildir/maildirsize 314572800S 0 0 How can I solve this issue? Thank you! PS. I built the kernel of CLIENTc7 and SERVERc7 using kernel-ml-aufs.repo (at https://copr-be.cloud.fedoraproject.org/results/bnied/kernel-ml-aufs for Centos 7). --------------------------------- CLIENTc7 --------------------------- [root@CLIENTc7 ~]# cat /proc/mounts sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 devtmpfs /dev devtmpfs rw,nosuid,size=1004180k,nr_inodes=251045,mode=755 0 0 securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0 tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0 cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/sy stemd-cgroups-agent,name=systemd 0 0 pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0 cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0 cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0 cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0 cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0 cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0 cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0 cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0 cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0 cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0 cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0 configfs /sys/kernel/config configfs rw,relatime 0 0 /dev/mapper/centos-root / xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0 systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16204 0 0 systemd-1 /mail/03 autofs rw,relatime,fd=31,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16206 0 0 debugfs /sys/kernel/debug debugfs rw,relatime 0 0 hugetlbfs /dev/hugepages hugetlbfs rw,relatime,pagesize=2M 0 0 mqueue /dev/mqueue mqueue rw,relatime 0 0 systemd-1 /mail/01 autofs rw,relatime,fd=37,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16630 0 0 nfsd /proc/fs/nfsd nfsd rw,relatime 0 0 /dev/vda1 /boot xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 SERVERc7:/mail/overlay/01 /mail/01 nfs rw,noatime,vers=3,rsize=262144,wsize=262144,namlen=242,hard,proto=tcp,t imeo=600,retrans=2,sec=sys,mountaddr=10.10.25.154,mountvers=3,mountport =20048,mountproto=udp,local_lock=none,addr=10.10.25.154 0 0 SERVERc7:/mail/overlay/03 /mail/03 nfs4 rw,noatime,vers=4.1,rsize=262144,wsize=262144,namlen=242,hard,proto=tcp ,timeo=600,retrans=2,sec=sys,clientaddr=10.10.25.155,local_lock=none,ad dr=10.10.25.154 0 0 tmpfs /run/user/0 tmpfs rw,nosuid,nodev,relatime,size=203420k,mode=700 0 0 [CLIENTc7]# uname -a Linux CLIENTc7 5.4.13-1.el7.x86_64 #1 SMP Fri Mar 6 18:17:06 CET 2020 x86_64 x86_64 x86_64 GNU/Linux --------------------------------- SERVERc7 --------------------------- [SERVERc7]# cat /proc/mounts sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 devtmpfs /dev devtmpfs rw,nosuid,size=1004180k,nr_inodes=251045,mode=755 0 0 securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0 tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0 cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/sy stemd-cgroups-agent,name=systemd 0 0 pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0 cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0 cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0 cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0 cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0 cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0 cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0 cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0 cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0 cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0 cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0 configfs /sys/kernel/config configfs rw,relatime 0 0 /dev/mapper/centos-root / xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0 systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=22,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16284 0 0 systemd-1 /mail/prod/03 autofs rw,relatime,fd=34,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16357 0 0 mqueue /dev/mqueue mqueue rw,relatime 0 0 hugetlbfs /dev/hugepages hugetlbfs rw,relatime,pagesize=2M 0 0 debugfs /sys/kernel/debug debugfs rw,relatime 0 0 systemd-1 /mail/prod/01 autofs rw,relatime,fd=40,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=16729 0 0 nfsd /proc/fs/nfsd nfsd rw,relatime 0 0 /dev/mapper/centos-root /ldap xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0 /dev/loop0 /mail/new/xino ext4 rw,noatime 0 0 /dev/vda1 /boot xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0 /dev/mapper/mail01 /mail/new/01 xfs rw,noatime,attr2,inode64,logbufs=8,logbsize=128k,noquota 0 0 /dev/mapper/mail03 /mail/new/03 xfs rw,noatime,attr2,inode64,logbufs=8,logbsize=128k,noquota 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 OLDSERVERr3:/mail/01 /mail/prod/01 nfs ro,noatime,vers=3,rsize=8192,wsize=8192,namlen=255,hard,proto=udp,timeo =11,retrans=3,sec=sys,mountaddr=10.10.25.69,mountvers=3,mountport=603,m ountproto=udp,local_lock=none,addr=10.10.25.69 0 0 systemd-1 /mail/overlay/01 autofs rw,relatime,fd=71,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=24997 0 0 OLDSERVERr3:/mail/03 /mail/prod/03 nfs ro,noatime,vers=3,rsize=8192,wsize=8192,namlen=255,hard,proto=udp,timeo =11,retrans=3,sec=sys,mountaddr=10.10.25.69,mountvers=3,mountport=603,m ountproto=udp,local_lock=none,addr=10.10.25.69 0 0 none /mail/overlay/01 aufs rw,noatime,si=464954f14f2a4139,verbose 0 0 systemd-1 /mail/overlay/03 autofs rw,relatime,fd=67,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_in o=25652 0 0 none /mail/overlay/03 aufs rw,noatime,si=464954f14f2a7139,verbose 0 0 tmpfs /run/user/0 tmpfs rw,nosuid,nodev,relatime,size=203420k,mode=700 0 0 [SERVERc7]# find /sys/module/aufs -type f -print -exec cat {} \; /sys/module/aufs/uevent cat: /sys/module/aufs/uevent: Permission denied /sys/module/aufs/parameters/allow_userns N /sys/module/aufs/parameters/brs 1 /sys/module/aufs/version 5.4-20200113 [SERVERc7]# find /sys/fs/aufs -type f -print -exec cat {} \; /sys/fs/aufs/si_464954f14f2a7139/br1 /mail/prod/03=rr /sys/fs/aufs/si_464954f14f2a7139/brid0 64 /sys/fs/aufs/si_464954f14f2a7139/br0 /mail/new/03=rw /sys/fs/aufs/si_464954f14f2a7139/xi_path /mail/new/xino/.aufs02.xino /sys/fs/aufs/si_464954f14f2a7139/brid1 65 /sys/fs/aufs/si_464954f14f2a4139/br1 /mail/prod/01=rr /sys/fs/aufs/si_464954f14f2a4139/brid0 64 /sys/fs/aufs/si_464954f14f2a4139/br0 /mail/new/01=rw /sys/fs/aufs/si_464954f14f2a4139/xi_path /mail/new/xino/.aufs01.xino /sys/fs/aufs/si_464954f14f2a4139/brid1 65 [SERVERc7]# find /sys/kernel/debug/aufs/ -type f -print -exec cat {} \; /sys/kernel/debug/aufs/si_464954f14f2a7139/xi1 1, 2x1024 3282872 /sys/kernel/debug/aufs/si_464954f14f2a7139/xi0 1, 2x1024 1032 /sys/kernel/debug/aufs/si_464954f14f2a7139/xigen 0x1024 0 /sys/kernel/debug/aufs/si_464954f14f2a7139/xib 8x1024 4096 /sys/kernel/debug/aufs/si_464954f14f2a7139/plink 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 /sys/kernel/debug/aufs/si_464954f14f2a4139/xi1 1, 4x1024 6118296 /sys/kernel/debug/aufs/si_464954f14f2a4139/xi0 1, 2x1024 1032 /sys/kernel/debug/aufs/si_464954f14f2a4139/xigen 2x1024 48 /sys/kernel/debug/aufs/si_464954f14f2a4139/xib 8x1024 4096 /sys/kernel/debug/aufs/si_464954f14f2a4139/plink 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 [SERVERc7]# uname -a Linux SERVERc7 5.4.13-1.el7.x86_64 #1 SMP Fri Mar 6 18:17:06 CET 2020 x86_64 x86_64 x86_64 GNU/Linux [SERVERc7]# rpm -qa | grep aufs kernel-ml-aufs-tools-libs-5.4.13-1.el7.x86_64 kernel-ml-aufs-tools-5.4.13-1.el7.x86_64 kernel-ml-aufs-headers-5.4.13-1.el7.x86_64 aufs-tools-4.19-1.x86_64 kernel-ml-aufs-5.4.13-1.el7.x86_64
config-5.4.13-1.el7.x86_64.gz
Description: application/gzip
