Here is the kernel message produced :
[ 5185.703098] ------------[ cut here ]------------
[ 5185.703120] WARNING: CPU: 2 PID: 31077 at include/linux/fs.h:2502
au_h_open+0x209/0x250()
[ 5185.703121] Modules linked in: binfmt_misc nls_utf8 isofs nfsv3 nfs_acl
nfs lockd grace fscache snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm
snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer
crc32_pclmul joydev aesni_intel snd aes_i586 xts lrw gf128mul ablk_helper
cryptd input_leds soundcore serio_raw i2c_piix4 mac_hid 8250_fintek
parport_pc ppdev sunrpc lp parport autofs4 hid_generic usbhid hid ahci
psmouse e1000 libahci pata_acpi video
[ 5185.703157] CPU: 2 PID: 31077 Comm: sh Not tainted 4.4.0+ #1
[ 5185.703158] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS
VirtualBox 12/01/2006
[ 5185.703160] Â c1adf9a7 e34f228e 00000000 ec3f3c84 c13bdab8 00000000
ec3f3cb4 c106d927
[ 5185.703163] Â c19d7610 00000002 00007965 c19f1714 000009c6 c12fb899
c12fb899 dab68600
[ 5185.703166] Â ffffffff ef0d4f00 ec3f3cc4 c106da32 00000009 00000000
ec3f3cfc c12fb899
[ 5185.703170] Call Trace:
[ 5185.703177] Â [<c13bdab8>] dump_stack+0x41/0x59
[ 5185.703183] Â [<c106d927>] warn_slowpath_common+0x87/0xc0
[ 5185.703184] Â [<c12fb899>] ? au_h_open+0x209/0x250
[ 5185.703186] Â [<c12fb899>] ? au_h_open+0x209/0x250
[ 5185.703188] Â [<c106da32>] warn_slowpath_null+0x22/0x30
[ 5185.703189] Â [<c12fb899>] au_h_open+0x209/0x250
[ 5185.703191] Â [<c12fcecf>] au_do_open_nondir+0x11f/0x130
[ 5185.703192] Â [<c12fcdb0>] ? au_reval_and_lock_fdi+0x9b0/0x9b0
[ 5185.703194] Â [<c12fbaea>] au_do_open+0x20a/0x280
[ 5185.703195] Â [<c12f9160>] ? aufs_d_revalidate+0x880/0xe00
[ 5185.703197] Â [<c12fdcd2>] aufs_open_nondir+0x72/0x190
[ 5185.703199] Â [<c12fcdb0>] ? au_reval_and_lock_fdi+0x9b0/0x9b0
[ 5185.703202] Â [<c11d207c>] do_dentry_open+0x1ec/0x300
[ 5185.703203] Â [<c12fdc60>] ? aufs_fsync_nondir+0x120/0x120
[ 5185.703205] Â [<c11d35bf>] vfs_open+0x4f/0x60
[ 5185.703208] Â [<c11e1b13>] path_openat+0x423/0x1160
[ 5185.703212] Â [<c11cc492>] ? mem_cgroup_commit_charge+0x62/0xe0
[ 5185.703214] Â [<c11e3928>] do_filp_open+0x68/0xe0
[ 5185.703218] Â [<c13654d0>] ? aa_alloc_task_context+0x20/0x40
[ 5185.703219] Â [<c13654d0>] ? aa_alloc_task_context+0x20/0x40
[ 5185.703222] Â [<c136b6c4>] ? apparmor_cred_prepare+0x24/0x40
[ 5185.703224] Â [<c11d9827>] do_open_execat+0x67/0x170
[ 5185.703228] Â [<c108ba37>] ? prepare_creds+0x97/0xe0
[ 5185.703230] Â [<c11db31e>] do_execveat_common+0x16e/0x670
[ 5185.703232] Â [<c11e29ea>] ? getname_flags+0x3a/0x1a0
[ 5185.703233] Â [<c11dba74>] SyS_execve+0x34/0x40
[ 5185.703237] Â [<c10038fd>] do_fast_syscall_32+0x8d/0x150
[ 5185.703241] Â [<c17bb39c>] sysenter_past_esp+0x3d/0x61
[ 5185.703243] ---[ end trace 2d2178714e9cff6b ]---
On Thu, Feb 4, 2016 at 12:39 PM, James Burry <[1]jbu...@gmail.com> wrote:
Hi JR. Yes, the RW branch is local ext2 on /dev/sdb1
I will try the patch and let you know what happens. I did verify that the
culprit was not NFS. I copied all of the NFS files locally (to an ext2
filesystem) and the same error occurred (text file busy).
On Thu, Feb 4, 2016 at 8:34 AM, <[2]sf...@users.sourceforge.net> wrote:
James Burry:
> All of the ro branches are mounted from an NFS share. Maybe the extra
> latency associated with the NFS share has something to do with the
issue.
> The file which is causing the "text file busy" error for me is coming
form
> /proj/[3]5.113.79.8/.isoMounts/114_ThirdPartyLinuxDev.iso=ro, which is
from
> the NFS mount.
It is very hard for me to reproduce the problem.
I am trying repeatedly this test script.
The result is always success.
----------------------------------------------------------------------
cd /my/aufs
NfsV3Ro=/local/nfsv3/server/dir
sudo mount -o remount,rw $NfsV3Ro
cat << EOF > $NfsV3Ro/a.sh
#!/bin/sh
echo success
EOF
ldd /bin/sh /bin/bash /bin/chmod |
fgrep -v 'not a dynamic' |
sort | uniq |
#tee /dev/tty |
awk '
NF == 1 {sub(/:$/, ""); print}
NF == 4 {print $3}
NF == 2 {print $1}
' |
xargs -ri cp -ipu --parent \{\} $NfsV3Ro/
sudo mount -o remount,ro $NfsV3Ro
stat -f . ../rw ../ro
sudo chroot . sh -c "chmod +x a.sh && ./a.sh"
----------------------------------------------------------------------
output:
----------------------------------------------------------------------
(/proc/mounts)
/dev/ram1 /tmp/nfsv3/tmp/ro ext2
ro,relatime,errors=continue,user_xattr,acl 0 0
localhost:/tmp/nfsv3/tmp/ro /dev/shm/ro nfs
ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,proto=udp,timeo
=11,retrans=3,mountaddr=127.0.0.1,mountvers=3,mountport=54974,mountproto=u
dp,local_lock=none,addr=127.0.0.1 0 0
/dev/ram0 /dev/shm/rw ext2 rw,relatime,errors=continue,user_xattr,acl 0 0
none /dev/shm/u aufs rw,relatime,si=aa6735bb21eac00d 0 0
(/sys/fs/aufs/si_*/br[01])
/dev/shm/rw=rw
/dev/shm/ro=ro
(stat)
 File: "."
  ID: 0    Namelen: 242   Type: UNKNOWN (0x61756673)
Block size: 1024Â Â Â Â Fundamental block size: 1024
Blocks: Total: 7931Â Â Â Â Free: 7868Â Â Â Â Available: 7459
Inodes: Total: 2048Â Â Â Â Free: 2016
 File: "../rw"
  ID: c931affb527b7092 Namelen: 255   Type: ext2/ext3
Block size: 1024Â Â Â Â Fundamental block size: 1024
Blocks: Total: 7931Â Â Â Â Free: 7868Â Â Â Â Available: 7459
Inodes: Total: 2048Â Â Â Â Free: 2016
 File: "../ro"
  ID: 0    Namelen: 255   Type: nfs
Block size: 32768Â Â Â Fundamental block size: 32768
Blocks: Total: 248Â Â Â Â Free: 145Â Â Â Â Available: 132
Inodes: Total: 2048Â Â Â Â Free: 1958
(chroot)
success
----------------------------------------------------------------------
If you can, try the attached patch.
It doesn't solve the problem, but helps finding where ETXTBSY is
returned.
J. R. Okajima
References
1. mailto:jbu...@gmail.com
2. mailto:sf...@users.sourceforge.net
3. http://5.113.79.8/.isoMounts/114_ThirdPartyLinuxDev.iso=ro
------------------------------------------------------------------------------
Site24x7 APM Insight: Get Deep Visibility into Application Performance
APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
Monitor end-to-end web transactions and take corrective actions now
Troubleshoot faster and improve end-user experience. Signup Now!
http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
