Am 22.02.2013 08:26, schrieb sf...@users.sourceforge.net:
> Hello Eibo,
>
> Eibo Thieme:
>> Sometimes I loose all mounted filesystems on the client, except for the
>> aufs mounted root. It is reproducible by triggering a tab filename
>> completion in bash, it can mostly be prevented by doing an ls on the
>> aufs mount before switching root at startup. Sometimes, with no clear
>> evidence on what provoked it, all mounts are lost anyways. Using X11,
>> OpenOffice, Firefox and Thunderbird is apparently usually safe,
>> especially work on the command line seems to trigger it.
>>
>> The Error:
>> Pressing ls /pro followed by the tab key (or /hom or /us or /var)
>> All mounted filesystems are empty afterwards
Correction: All mounted filesystems on mount points in root are empty
afterwards. So /proc, /sys, /dev, /usr, /home, /var, /tmp, /swap are
gone, but /aufs/xino, /aufs/private, ... are still there.
>
> Currently I have no idea about the cause.
At least I am not alone. :)
> As you know, procfs is outside of aufs. It means all the access to /proc
> is not handled by aufs essentially. But the root dir is aufs. If aufs
> tells you that /proc is brabra as a bogus result, then you will notice
> something is wrong at once.
> We may need to investigate focusing these points.
>
> - Is the root dir ok? In other words, is NFS ok?
> All info returned by aufs is based upon its branch fs-es. You have 3
> NFS branches for the root dir. I'd suggest you to confirm them by
> "ls -al /aufs/{private,clients,server}" which by-passes
> aufs. Also "stat / /aufs/{private,clients,server}" and
> "stat -f / /aufs/{private,clients,server}" may give us some hint.
If I am not mistaken, NFS is ok. Everything on the root fs stays
accessible after the error appears. You can even mount those lost
directories again, if you happen to be root already. Here are the
outputs of the commands, the output seems not to change after the error.
ls -al /aufs/private
===
drwxr-xr-x 14 root root 4096 22. Feb 11:01 .
drwxr-xr-x 8 root root 4096 28. Okt 11:02 ..
drwxr-xr-x 3 root root 4096 27. Okt 19:10 boot
drwxr-sr-x 4 root src 4096 28. Okt 14:46 dev
drwxr-xr-x 15 root root 4096 22. Feb 10:56 etc
drwxr-xr-x 2 root root 4096 19. Nov 14:23 export
drwxr-xr-x 4 root root 4096 9. Jul 2007 lib
drwxr-xr-x 2 root root 4096 22. Feb 10:52 media
drwxr-xr-x 3 root root 4096 27. Okt 09:47 nfs
drwxr-xr-x 12 root root 4096 21. Feb 16:24 root
drwxr-xr-x 3 root root 4096 24. Jan 13:39 tmp
drwxr-xr-x 3 root root 4096 28. Okt 15:32 var
-r--r--r-- 25 root root 0 29. Feb 2008 .wh..wh.aufs
drwx--x--x 2 root root 4096 8. Apr 2010 .wh..wh.orph
drwxr-xr-x 2 root root 4096 21. Feb 15:44 .xino
(actually I am wondering about those old whiteout files, must be
leftovers of former installations)
ls -al /aufs/clients
===
drwxr-xr-x 14 root root 4096 28. Okt 17:25 .
drwxr-xr-x 8 root root 4096 28. Okt 11:02 ..
drwxr-xr-x 8 root root 4096 28. Okt 11:02 aufs
drwxr-xr-x 2 root root 4096 8. Apr 2008 .client-var
drwxr-xr-x 2 root root 4096 8. Apr 2010 dev
drwxr-xr-x 19 root root 4096 19. Nov 14:41 etc
drwxr-xr-x 3 root root 4096 9. Jul 2007 lib
drwxr-xr-x 3 root root 4096 30. Jun 2009 nfs
lrwxrwxrwx 1 root root 8 24. Mär 2012 opt -> /usr/opt
drwxr-xr-x 2 root root 4096 31. Mai 2008 sbin
drwxr-xr-x 2 root root 4096 8. Apr 2008 .server-var
drwxr-xr-x 2 root root 4096 7. Feb 2008 swap
drwxr-xr-x 2 root root 4096 28. Okt 17:25 tmp
drwxr-xr-x 4 root root 4096 28. Okt 14:42 var
drwxr-xr-x 2 root root 4096 18. Feb 2008 .xino
ls -al /aufs/server
===
drwxr-xr-x 24 root root 4096 22. Feb 11:17 .
drwxr-xr-x 8 root root 4096 28. Okt 11:02 ..
drwxrwxr-x 2 hti users 4096 8. Mär 2012 ablage-hti
drwxrwxr-x 2 hti users 4096 1. Mär 2012 ablage-rtp
drwxr-xr-x 2 root root 4096 24. Feb 2011 archiv
drwxr-xr-x 2 root root 4096 10. Nov 12:07 bin
drwxr-xr-x 4 root root 4096 11. Nov 12:50 boot
drwxr-xr-x 8 root root 36864 2. Aug 2012 dev
drwxr-xr-x 203 root root 20480 21. Feb 14:17 etc
drwxr-xr-x 2 root root 4096 27. Mär 2011 export
drwxr-xr-x 2 root root 4096 2. Feb 2012 home
drwxr-xr-x 13 root root 12288 13. Dez 14:20 lib
drwxr-xr-x 2 root root 16384 10. Jul 2003 lost+found
drwxr-xr-x 2 root root 4096 24. Mär 2012 media
drwxr-xr-x 2 root root 4096 18. Sep 2003 mnt
lrwxrwxrwx 1 root root 8 24. Mär 2012 opt -> /usr/opt
dr-xr-xr-x 2 root root 4096 24. Mär 2012 proc
drwx--x--x 46 root root 4096 21. Feb 15:02 root
drwxr-xr-x 2 root root 4096 10. Nov 12:07 sbin
drwxr-xr-x 2 root root 4096 7. Mär 2007 selinux
lrwxrwxrwx 1 root root 13 24. Mär 2012 share -> /export/share
-rw-r--r-- 1 root root 0 2. Aug 2012 SQUEEZE
drwxr-xr-x 3 root root 4096 25. Mär 2012 srv
drwxr-xr-x 2 root root 4096 24. Mär 2012 sys
drwxrwxrwt 7 root root 4096 10. Nov 17:41 tmp
drwxr-xr-x 2 root root 4096 16. Sep 2010 usr
drwxr-xr-x 4 root root 4096 2. Aug 2012 var
stat /
===
File: „/“
Size: 4096 Blocks: 8 IO Block: 32768 Verzeichnis
Device: 10h/16d Inode: 2 Links: 48
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-22 11:13:49.000000000 +0100
Modify: 2013-02-22 11:01:36.000000000 +0100
Change: 2013-02-22 11:01:36.000000000 +0100
stat /aufs/private
===
File: „/aufs/private“
Size: 4096 Blocks: 8 IO Block: 32768 Verzeichnis
Device: dh/13d Inode: 944705 Links: 14
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-22 11:13:49.000000000 +0100
Modify: 2013-02-22 11:01:36.000000000 +0100
Change: 2013-02-22 11:01:36.000000000 +0100
stat /aufs/clients
===
File: „/aufs/clients“
Size: 4096 Blocks: 8 IO Block: 32768 Verzeichnis
Device: eh/14d Inode: 146593 Links: 13
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-22 12:04:20.000000000 +0100
Modify: 2013-02-22 12:04:17.000000000 +0100
Change: 2013-02-22 12:04:17.000000000 +0100
stat /aufs/server
===
File: „/aufs/server“
Size: 4096 Blocks: 8 IO Block: 32768 Verzeichnis
Device: fh/15d Inode: 2 Links: 24
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-22 11:18:00.000000000 +0100
Modify: 2013-02-22 11:17:41.000000000 +0100
Change: 2013-02-22 11:17:41.000000000 +0100
stat -f /
===
File: "/"
ID: 0 Namelen: 242 Type: UNKNOWN (0x61756673)
Block size: 32768 Fundamental block size: 32768
Blocks: Total: 600881 Free: 394835 Available: 364312
Inodes: Total: 1221600 Free: 903633
stat -f /aufs/private
===
File: "/aufs/private"
ID: 0 Namelen: 255 Type: nfs
Block size: 32768 Fundamental block size: 32768
Blocks: Total: 600881 Free: 394835 Available: 364312
Inodes: Total: 1221600 Free: 903633
stat -f /aufs/clients
===
File: "/aufs/clients"
ID: 0 Namelen: 255 Type: nfs
Block size: 32768 Fundamental block size: 32768
Blocks: Total: 600881 Free: 394835 Available: 364312
Inodes: Total: 1221600 Free: 903633
stat -f /aufs/server
===
File: "/aufs/server"
ID: 0 Namelen: 255 Type: nfs
Block size: 32768 Fundamental block size: 32768
Blocks: Total: 30138 Free: 21337 Available: 19806
Inodes: Total: 61312 Free: 44025
> - Is the mount tree traversal ok?
> I guess there is nothing wrong in this point, but I'd just make sure.
> Try "ls /proc" before and after "mount --move".
> Also "cat /proc/mounts" before and after "mount --move" would be good.
As I have no direct access to the machines at the moment, it is a bit
difficult to provide this information at the moment, but I had someone
to check. ls /proc in the initramfs is giving a plausible listing, ls
/proc in runlevel 2 is also ok, as long as I don't trigger the error.
cat /proc/mounts before "mount --move"
===
rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /aufs/xino tmpfs rw,relatime,size=16384k 0 0
192.168.0.1:/target/export/hti13/ /aufs/private nfs
rw,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
192.168.0.1:/target/export/clients/ /aufs/clients nfs
ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
192.168.0.1:/target/ /aufs/server nfs
ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
none /root aufs rw,relatime,si=ae5bae97,noplink 0 0
cat /proc/mounts after booting to runlevel 2 (way past mount --move):
===
rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /aufs/xino tmpfs rw,relatime,size=16384k 0 0
192.168.0.1:/target/export/hti13/ /aufs/private nfs
rw,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
192.168.0.1:/target/export/clients/ /aufs/clients nfs
ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
192.168.0.1:/target/ /aufs/server nfs
ro,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=10,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=all,addr=192.168.0.1
0 0
none / aufs rw,relatime,si=ae5bae97,noplink 0 0
tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0
varrun /var/run tmpfs rw,nosuid,relatime,mode=755 0 0
varlock /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev tmpfs rw,relatime,size=10240k,mode=755 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
192.168.0.1:/target/usr/ /usr nfs
rw,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
192.168.0.1:/target/var/ /aufs/server-var nfs
ro,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
192.168.0.1:/target/export/var/hti13/ /aufs/client-var nfs
rw,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
192.168.0.1:/target/export/tmp/hti13/ /tmp nfs
rw,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
192.168.0.1:/target/export/swaps/hti13/ /swap nfs
rw,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
192.168.0.1:/home/ /home nfs
rw,noatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=58461,mountproto=udp,local_lock=none,addr=192.168.0.1
0 0
none /var aufs rw,relatime,si=af17bf97 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc
rw,nosuid,nodev,noexec,relatime 0 0
>
> - Is procfs ok?
> This is just-to-make-sure point too. Try "stat /proc; stat -f /proc".
Before error:
ls -la /proc before error
===
dr-xr-xr-x 73 root root 0 22. Feb 12:32 .
drwxr-xr-x 47 root root 4096 22. Feb 12:50 ..
dr-xr-xr-x 7 root root 0 22. Feb 12:49 1
dr-xr-xr-x 7 root root 0 22. Feb 12:49 10
dr-xr-xr-x 7 daemon daemon 0 22. Feb 12:55 1014
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1039
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1079
dr-xr-xr-x 7 root root 0 22. Feb 12:50 1084
dr-xr-xr-x 7 root root 0 22. Feb 12:49 11
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1104
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1105
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1106
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1107
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1108
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1109
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1112
dr-xr-xr-x 7 root root 0 22. Feb 12:50 1113
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1117
dr-xr-xr-x 7 root root 0 22. Feb 12:55 1118
dr-xr-xr-x 7 root root 0 22. Feb 12:51 1126
dr-xr-xr-x 7 eibo root 0 22. Feb 12:55 1129
dr-xr-xr-x 7 root root 0 22. Feb 12:51 1131
dr-xr-xr-x 7 eibo users 0 22. Feb 12:55 1199
dr-xr-xr-x 7 root root 0 22. Feb 12:49 12
dr-xr-xr-x 7 eibo users 0 22. Feb 12:51 1200
dr-xr-xr-x 7 eibo users 0 22. Feb 13:02 1204
dr-xr-xr-x 7 root root 0 22. Feb 12:49 13
dr-xr-xr-x 7 root root 0 22. Feb 12:49 139
dr-xr-xr-x 7 root root 0 22. Feb 12:49 14
dr-xr-xr-x 7 root root 0 22. Feb 12:49 15
dr-xr-xr-x 7 root root 0 22. Feb 12:49 16
dr-xr-xr-x 7 root root 0 22. Feb 12:49 17
dr-xr-xr-x 7 root root 0 22. Feb 12:49 18
dr-xr-xr-x 7 root root 0 22. Feb 12:49 19
dr-xr-xr-x 7 root root 0 22. Feb 12:49 2
dr-xr-xr-x 7 root root 0 22. Feb 12:49 20
dr-xr-xr-x 7 root root 0 22. Feb 12:49 21
dr-xr-xr-x 7 root root 0 22. Feb 12:49 282
dr-xr-xr-x 7 root root 0 22. Feb 12:49 293
dr-xr-xr-x 7 root root 0 22. Feb 12:49 297
dr-xr-xr-x 7 root root 0 22. Feb 12:49 3
dr-xr-xr-x 7 root root 0 22. Feb 12:49 352
dr-xr-xr-x 7 root root 0 22. Feb 12:49 5
dr-xr-xr-x 7 daemon daemon 0 22. Feb 12:49 554
dr-xr-xr-x 7 root root 0 22. Feb 12:49 561
dr-xr-xr-x 7 root root 0 22. Feb 12:49 572
dr-xr-xr-x 7 root root 0 22. Feb 12:49 6
dr-xr-xr-x 7 root root 0 22. Feb 12:49 698
dr-xr-xr-x 7 root root 0 22. Feb 12:49 7
dr-xr-xr-x 7 root root 0 22. Feb 12:49 707
dr-xr-xr-x 7 messagebus messagebus 0 22. Feb 12:49 721
dr-xr-xr-x 7 root root 0 22. Feb 12:49 743
dr-xr-xr-x 7 root root 0 22. Feb 12:49 761
dr-xr-xr-x 7 root root 0 22. Feb 12:49 8
dr-xr-xr-x 7 root root 0 22. Feb 12:55 868
dr-xr-xr-x 7 postfix postfix 0 22. Feb 12:55 881
dr-xr-xr-x 7 postfix postfix 0 22. Feb 12:55 882
dr-xr-xr-x 7 root root 0 22. Feb 12:55 883
dr-xr-xr-x 7 ntp office 0 22. Feb 12:50 887
dr-xr-xr-x 7 root root 0 22. Feb 12:49 9
dr-xr-xr-x 7 haldaemon haldaemon 0 22. Feb 12:50 904
dr-xr-xr-x 7 root root 0 22. Feb 12:50 905
dr-xr-xr-x 7 haldaemon haldaemon 0 22. Feb 12:50 936
dr-xr-xr-x 7 root root 0 22. Feb 12:55 961
dr-xr-xr-x 2 root root 0 22. Feb 12:50 acpi
dr-xr-xr-x 5 root root 0 22. Feb 13:02 asound
-r--r--r-- 1 root root 0 22. Feb 13:02 buddyinfo
dr-xr-xr-x 4 root root 0 22. Feb 13:02 bus
-r--r--r-- 1 root root 0 22. Feb 13:02 cmdline
-r--r--r-- 1 root root 13753 22. Feb 13:02 config.gz
-r--r--r-- 1 root root 0 22. Feb 13:02 consoles
-r--r--r-- 1 root root 0 22. Feb 13:02 cpuinfo
-r--r--r-- 1 root root 0 22. Feb 13:02 devices
-r--r--r-- 1 root root 0 22. Feb 13:02 diskstats
-r--r--r-- 1 root root 0 22. Feb 13:02 dma
dr-xr-xr-x 3 root root 0 22. Feb 13:02 driver
-r--r--r-- 1 root root 0 22. Feb 13:02 execdomains
-r--r--r-- 1 root root 0 22. Feb 13:02 filesystems
dr-xr-xr-x 5 root root 0 22. Feb 13:02 fs
-r--r--r-- 1 root root 0 22. Feb 13:02 interrupts
-r--r--r-- 1 root root 0 22. Feb 13:02 iomem
-r--r--r-- 1 root root 0 22. Feb 13:02 ioports
dr-xr-xr-x 23 root root 0 22. Feb 13:02 irq
-r--r--r-- 1 root root 0 22. Feb 13:02 kallsyms
-r-------- 1 root root 0 22. Feb 12:49 kmsg
-r-------- 1 root root 0 22. Feb 13:02 kpagecount
-r-------- 1 root root 0 22. Feb 13:02 kpageflags
-r--r--r-- 1 root root 0 22. Feb 13:02 loadavg
-r--r--r-- 1 root root 0 22. Feb 13:02 locks
-r--r--r-- 1 root root 0 22. Feb 13:02 meminfo
-r--r--r-- 1 root root 0 22. Feb 13:02 misc
-r--r--r-- 1 root root 0 22. Feb 13:02 modules
lrwxrwxrwx 1 root root 11 22. Feb 13:02 mounts ->
self/mounts
-rw-r--r-- 1 root root 0 22. Feb 12:50 mtrr
lrwxrwxrwx 1 root root 8 22. Feb 13:02 net -> self/net
-r--r--r-- 1 root root 0 22. Feb 13:02 pagetypeinfo
-r--r--r-- 1 root root 0 22. Feb 13:02 partitions
lrwxrwxrwx 1 root root 64 22. Feb 12:32 self -> 1204
-r-------- 1 root root 0 22. Feb 13:02 slabinfo
-r--r--r-- 1 root root 0 22. Feb 13:02 softirqs
-r--r--r-- 1 root root 0 22. Feb 13:02 stat
-r--r--r-- 1 root root 0 22. Feb 13:02 swaps
dr-xr-xr-x 1 root root 0 22. Feb 12:49 sys
dr-xr-xr-x 2 root root 0 22. Feb 13:02 sysvipc
-r--r--r-- 1 root root 0 22. Feb 13:02 timer_list
dr-xr-xr-x 4 root root 0 22. Feb 13:02 tty
-r--r--r-- 1 root root 0 22. Feb 13:02 uptime
-r--r--r-- 1 root root 0 22. Feb 13:02 version
-r-------- 1 root root 0 22. Feb 13:02 vmallocinfo
-r--r--r-- 1 root root 0 22. Feb 13:02 vmstat
-r--r--r-- 1 root root 0 22. Feb 13:02 zoneinfo
stat /proc before error
===
File: „/proc“
Size: 0 Blocks: 0 IO Block: 1024 Verzeichnis
Device: 3h/3d Inode: 1 Links: 76
Access: (0555/dr-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-22 12:32:48.000999848 +0100
Modify: 2013-02-22 12:32:48.000999848 +0100
Change: 2013-02-22 12:32:48.000999848 +0100
stat -f /proc before error
===
File: "/proc"
ID: 0 Namelen: 255 Type: proc
Block size: 4096 Fundamental block size: 4096
Blocks: Total: 0 Free: 0 Available: 0
Inodes: Total: 0 Free: 0
After error:
ls -la /proc after error
===
insgesamt 8
dr-xr-xr-x 2 root root 4096 24. Mär 2012 .
drwxr-xr-x 48 root root 4096 22. Feb 11:01 ..
stat /proc after error
===
File: „/proc“
Size: 4096 Blocks: 8 IO Block: 32768 Verzeichnis
Device: 10h/16d Inode: 17 Links: 2
Access: (0555/dr-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2013-02-21 15:41:15.000000000 +0100
Modify: 2012-03-24 13:01:37.000000000 +0100
Change: 2012-03-24 14:48:40.000000000 +0100
stat -f /proc after error
===
File: "/proc"
ID: 0 Namelen: 242 Type: UNKNOWN (0x61756673)
Block size: 32768 Fundamental block size: 32768
Blocks: Total: 600881 Free: 394835 Available: 364312
Inodes: Total: 1221600 Free: 903632
> We may need to put some debug print into your kernel. If I write such
> patch, will you apply and test it?
Any such patches would be most welcome, I feel quite comfortable
patching the kernel, even manually, it's only I am not advanced enough
coming up with any sensible places to look at in this case. :)
If possible I would prefer the testing on a kernel with an aufs.ko
kernel module, other than that I could switch to any newer kernel, if
that would be helpful.
> And...
> - your /proc/mounts shows there is only one aufs (the root dir), but
> /sys/fs/aufs shows there two aufs mounts (root and var?)
> Is this intentinal?
Actually, I use two aufs mounts, the root mount is the setup you have
seen with private on top of general client on top of server root. This
gives me an amazingly simple way to administrate these machines, I can
install anything on the server and it just works on the clients. Adding
a client is a trivial. Over the years I have come to the conclusion,
that to keep it simple, I have to use aufs for /var as well, reducing
the usage a bit by remote logging to the server. The mounting of /var is
done by an init script, which I should have given in my first post.
There is one phenonmenon here, as both mounts /aufs/server-var and
/aufs/client-var are still there, even after mounting. It might be that
only mounts on mountpoints in the root directory are affected. I will
try to check this out in more detail.
===================================================
#
# disklessmount.sh Mount all filesystems.
#
# Version: @(#)disklessmount.sh 0.9-9 19-Nov-2012 e...@plusgut.de
#
VERBOSE=yes
[ -f /etc/default/rcS ] && . /etc/default/rcS
#
# /var/run /var/lock tmpfs
#
#mount -t tmpfs -omode=0755,nosuid none /var/run
#mount -t tmpfs -omode=1777,nodev,noexec,nosuid none /var/lock
#
# starting portmap
# needed by nfs (eibo)
#
#echo -n "Starting portmap daemon: portmap"
#start-stop-daemon --start --quiet --exec /sbin/portmap
#echo "."
#sleep 1
#/sbin/rpc.statd -P /nfs
mkdir /aufs/xino/run
mount --move /var/run /aufs/xino/run
mkdir /aufs/xino/lock
mount --move /var/lock /aufs/xino/lock
#
# Mount remote file systems in /etc/fstab.
#
[ "$VERBOSE" != no ] && echo "Mounting remote filesystems..."
# alte mtab ist falsch
cat /proc/mounts > /etc/mtab.sav
mv /etc/mtab.sav /etc/mtab
mount -a -t nfs
#
# Var mit Overlay
#
mount -t aufs -o
br:/aufs/client-var=rw:/aufs/server-var=ro,xino=/aufs/xino/var
none /var
mount --move /aufs/xino/run /var/run
rmdir /aufs/xino/run
mount --move /aufs/xino/lock /var/lock
rmdir /aufs/xino/lock
#
# Swap over NFS
#
swapon -a
: exit 0
===================================================
> - I could not get your debug output,
>
> https://docs.google.com/file/d/0B0s7uiDVoB3OV09wNXZrM0Uyc2s/edit?usp=sharing
> since I don't have google drive account.
You should not need an account, try this slightly modified link instead:
https://docs.google.com/uc?id=0B0s7uiDVoB3OV09wNXZrM0Uyc2s&export=download
Or try this link:
https://www.dropbox.com/s/13vxwegryhp3iia/aufs.debug
Eibo
>
> J. R. Okajima
>
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