Hi
aufs au_new_inode:412:Aaa[7803]: Warning: Un-notified UDBA or repeatedly rename
d dir, b0, tmpfs, admin, hi5959, i4117.
We are seeing above warning from aufs. Two questions:
1. Is above message benign? Or does it indicate there is some memory leak or
something of that sort happening?
2. Pl see my mounts below. I tried running a command like "mv /.overlay/test
/.overlay/test1; mv /.overlay/test1 /.overlay/test" like several 10s of
thousand times but I didn't see above warning. Any other way I can find out
what is it from user space or kernel space that is making aufs throw this
warning?
Any help is appreciated.
thank you
P.s: we are moving to 3.4 kernel and hope to get to aufs 3.x with that.
However, we trying to address above concern now.
-bash-4.1# cat /proc/mounts
rootfs / rootfs rw 0 0
none / aufs rw,relatime,si=92ba869325e3197c 0 0
none /.overlay tmpfs rw,relatime,size=301980k,mode=755 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /tmp tmpfs rw,relatime,size=301980k 0 0
tmpfs /.deltas tmpfs rw,relatime,size=65536k 0 0
tmpfs /var/run tmpfs rw,relatime,size=65536k 0 0
tmpfs /var/tmp tmpfs rw,relatime,size=65536k 0 0
tmpfs /var/core tmpfs rw,relatime,size=201320k 0 0
tmpfs /var/log tmpfs rw,relatime,size=201320k 0 0
tmpfs /dev tmpfs rw,relatime,size=4096k 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
/dev/sda1 /mnt/flash vfat
rw,dirsync,noatime,gid=88,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp
437,iocharset=ascii,shortname=mixed,flush,errors=remount-ro 0 0
/dev/sdb1 /mnt/usb1 vfat
rw,dirsync,noatime,gid=88,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp
437,iocharset=ascii,shortname=mixed,flush,errors=remount-ro 0 0
none net:[4026531976] proc rw,nosuid,nodev,noexec,relatime 0 0
-bash-4.1#
-bash-4.1# ls -l /sys/module/aufs/
total 0
drwxr-xr-x 2 root root 0 Oct 16 11:13 parameters
-r--r--r-- 1 root root 4096 Oct 16 11:41 version
-bash-4.1# cat /sys/module/aufs/parameters/brs
1
-bash-4.1# cat /sys/module/aufs/version
2.2-standalone.tree-38-20111024
-bash-4.1# ls -l /sys/fs/aufs/
total 0
drwxr-xr-x 2 root root 0 Oct 16 11:13 si_92ba869325e3197c
-bash-4.1# cat /sys/fs/aufs/si_92ba869325e3197c/
br0 br1 xi_path
-bash-4.1# cat /sys/fs/aufs/si_92ba869325e3197c/br0
/=rw
-bash-4.1# cat /sys/fs/aufs/si_92ba869325e3197c/br1
/=ro
-bash-4.1# cat /sys/fs/aufs/si_92ba869325e3197c/xi_path
/.aufs.xino
-bash-4.1# ls -l /debug
ls: cannot access /debug: No such file or directory
-bash-4.1# dmesg | grep aufs
[ 0.373491] aufs 2.2-standalone.tree-38-20111024
[ 28.504552] aufs test_add:262:busybox[688]: uid/gid/perm /squashed-root
0/0/0555, 0/0/0755
-bash-4.1#
_________________________________________________________________
From: "[email protected]" <[email protected]>
To: Ben Hutchings <[email protected]>
Cc: [email protected]
Sent: Tuesday, July 31, 2012 8:52 PM
Subject: Re: [PATCH] Use correct comparison with root uid
Ben Hutchings:
> We should use uid_eq() to compare uids, and GLOBAL_ROOT_UID as
> the root uid.
Thank you very much.
Reviewing the commit,
d9a749b 2012-06-08 aufs: for 3.5-rcN, k[ug]id_t
I don't know why I changed to "== GLOBAL_ROOT_GID".
I am afraid my brain was sleeping while my eyes were open.
Your patch will be included in next release.
Also I've fixed "uid_eq(ia->i_gid, h_inode->i_gid)" to gid_eq() in
another place.
J. R. Okajima
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