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
--
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