The short repro script reproduces the problem here: root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique# df -T . Filesystem Type 1K-blocks Used Available Use% Mounted on none aufs 209711104 20796608 186780800 11% /var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique# mkdir -p dir1/dir2 root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique# mkdir foobar root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique# cd foobar root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/foobar# mkdir -p dir1/dir2 root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/foobar# rm -rf dir1 root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/foobar# ls ls: cannot open directory .: Stale file handle
This breaks a lot of tools, e.g. root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/foobar# find /sys/module/aufs -ls find: cannot get current directory: No such file or directory I may be able to try building the Ubuntu kernel, but I'm a bit slammed now, not sure when I can try it. But if your patch works it'd save us some effort. Here's the other info you requested: # uname -a Linux ubu14-bb-01 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux http://packages.ubuntu.com/trusty/kernel/linux-image-3.13.0-35-generic # dmesg | grep -i aufs [ 10.099732] aufs 3.13-20140303 [ 11.104168] aufs test_add:293:lxc-start[1516]: uid/gid/perm 0/0/0755, 1001/1001/0755 [ 11.131591] aufs test_add:293:lxc-start[1517]: uid/gid/perm 0/0/0755, 1001/1001/0755 [ 483.881535] aufs au_new_inode:432:bash[3127]: Warning: Un-notified UDBA or repeatedly renamed dir, b0, btrfs, foobar, hi16400847, i1227. (hey, looky, I got the same warning re UDBA!) # ls -l /proc/config.gz ls: cannot access /proc/config.gz: No such file or directory root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/foobar# cat /proc/mounts rootfs / rootfs rw 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 udev /dev devtmpfs rw,relatime,size=4076992k,nr_inodes=1019248,mode=755 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=817672k,mode=755 0 0 /dev/sda1 / btrfs rw,relatime,space_cache 0 0 none /sys/fs/cgroup tmpfs rw,relatime,size=4k,mode=755 0 0 none /sys/fs/fuse/connections fusectl rw,relatime 0 0 none /sys/kernel/debug debugfs rw,relatime 0 0 none /sys/kernel/security securityfs rw,relatime 0 0 tmpfs /tmp tmpfs rw,nosuid,noexec,noatime,size=524288k 0 0 none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0 none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0 none /run/user tmpfs rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755 0 0 none /sys/fs/pstore pstore rw,relatime 0 0 /dev/dm-0 /home btrfs rw,relatime,space_cache 0 0 rpc_pipefs /run/rpc_pipefs rpc_pipefs rw,relatime 0 0 systemd /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,release_agent=/run/cgmanager/agents/cgm-release-agent.systemd,name=systemd 0 0 none /var/lib/lxc/ubu14-bb-01-ubu1404-temp-g-speak-unique aufs rw,relatime,si=30d00c8dd5327da5,noplink 0 0 none /var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique aufs rw,relatime,si=30d00c8f5e792da5,noplink 0 0 none /var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/ephemeralbind tmpfs rw,relatime 0 0 none /var/lib/lxc/ubu14-bb-01-ubu1404-temp-g-speak-unique/ephemeralbind tmpfs rw,relatime 0 0 # more /sys/module/aufs/* /sys/module/aufs/coresize 202783 /sys/module/aufs/initsize 0 /sys/module/aufs/initstate live /sys/module/aufs/refcnt 431 /sys/module/aufs/srcversion F8A3BAB17A4595B4AB06091 /sys/module/aufs/taint /sys/module/aufs/uevent: Permission denied /sys/module/aufs/version 3.13-20140303 /sys/module/aufs/parameters/brs 1 # ls /sys/fs/aufs/* /sys/fs/aufs/config /sys/fs/aufs/si_30d00c8dd51b3da5: br0 br1 brid0 brid1 xi_path /sys/fs/aufs/si_30d00c8dd5327da5: br0 br1 brid0 brid1 xi_path /sys/fs/aufs/si_30d00c8f5e00cda5: br0 br1 brid0 brid1 xi_path /sys/fs/aufs/si_30d00c8f5e792da5: br0 br1 brid0 brid1 xi_path root@ubu14-bb-01:/var/lib/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique# more /sys/fs/aufs/si_30d00c8f5e792da5/* :::::::::::::: /sys/fs/aufs/si_30d00c8f5e792da5/br0 :::::::::::::: /home/data/lxc/ubu14-bb-01-ubu1204-temp-g-speak-unique/overlay=rw :::::::::::::: /sys/fs/aufs/si_30d00c8f5e792da5/br1 :::::::::::::: /var/lib/lxc/ubu14-bb-01-ubu1204=ro :::::::::::::: /sys/fs/aufs/si_30d00c8f5e792da5/brid0 :::::::::::::: 64 :::::::::::::: /sys/fs/aufs/si_30d00c8f5e792da5/brid1 :::::::::::::: 65 :::::::::::::: /sys/fs/aufs/si_30d00c8f5e792da5/xi_path :::::::::::::: /tmp/.aufs.xino ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/
