[Users] chkpnt: Error: d_path is invisible /var/lock

Anthony - antho2984 at gmail.com
Wed Sep 30 05:52:14 EDT 2009 

2009/9/30 Vitaliy Gusev <vgusev at openvz.org>

> On Wednesday 30 September 2009 12:13:39 pm Anthony - wrote:
>
> Ok, I will ivestigate this. But why /var/lock is mounted twice in VE
> (before chkpnt) ?
>

I don't know, I just rebooted and started the vm and it is mounted twice
again.

I lloked at /proc/mounts on the host and here is the diff between
before-chkpnt and after-restore:

< proc /proc proc rw 0 0
< sysfs /sys sysfs rw 0 0
< tmpfs /var/run tmpfs rw,mode=755 0 0
< tmpfs /var/lock tmpfs rw 0 0
< devpts /dev/pts devpts rw,gid=5,mode=620 0 0
< tmpfs /dev/shm tmpfs rw 0 0
< tmpfs /var/run tmpfs rw,mode=755 0 0
< tmpfs /var/lock tmpfs rw 0 0
---
> none /proc proc rw,nosuid,noexec,nodiratime 0 0
> none /sys sysfs rw 0 0
> none /var/run tmpfs rw 0 0
> none /var/lock tmpfs rw 0 0
> none /dev/pts devpts rw,mode=600 0 0
> none /dev/shm tmpfs rw 0 0
> none /var/run tmpfs rw 0 0
> simfs /var/lock simfs rw 0 0

none of these are mounted back in the same mount type. Do you have any hints
on this ?


> As workaround you can do "umount /va/lock".
>

on the host, here is what I did :

root at vzhost:/# umount /var/lock

root at vzhost:/# cat /proc/mounts
simfs / simfs rw 0 0
none /proc proc rw,nosuid,noexec,nodiratime 0 0
none /sys sysfs rw 0 0
none /var/run tmpfs rw 0 0
none /dev/pts devpts rw,mode=600 0 0
none /dev/shm tmpfs rw 0 0
none /var/run tmpfs rw 0 0
simfs /var/lock simfs rw 0 0

root at vzhost:/# umount /var/lock/
umount: simfs: not found
umount: /var/lock: not mounted
umount: simfs: not found
umount: /var/lock: not mounted

/var/lock remains mounted, and I still get the chkpnt error.


> > Hi,
> >
> > here is the command result on the host before first chkpnt :
> >
> > none /sys sysfs rw,nosuid,nodev,noexec 0 0
> > none /proc proc rw,nosuid,nodev,noexec 0 0
> > udev /dev tmpfs rw,mode=755 0 0
> > /dev/disk/by-uuid/52755e51-82e3-4df7-bdee-a91e834b04c1 / ext3
> > rw,relatime,errors=remount-ro,data=ordered 0 0
> > tmpfs /lib/init/rw tmpfs rw,nosuid,mode=755 0 0
> > fusectl /sys/fs/fuse/connections fusectl rw 0 0
> > varrun /var/run tmpfs rw,nosuid,mode=755 0 0
> > varlock /var/lock tmpfs rw,nosuid,nodev,noexec 0 0
> > tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
> > devpts /dev/pts devpts rw,nosuid,noexec,gid=5,mode=620 0 0
> > /dev/sda7 /mnt/data ext3 rw,nosuid,nodev,errors=continue,data=ordered 0 0
> > /dev/sda8 /tmp/qemuShare vfat
> >
> rw,sync,dirsync,nosuid,nodev,fmask=0022,dmask=0022,allow_utime=177777,codepage=cp437,iocharset=utf8
> > 0 0
> > rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
> > nfsd /proc/fs/nfsd nfsd rw 0 0
> > binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec 0
> 0
> > gvfs-fuse-daemon /home/all/.gvfs fuse.gvfs-fuse-daemon
> > rw,nosuid,nodev,user_id=1000,group_id=1000 0 0
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/private
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root
> > simfs rw 0 0
> > proc
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/proc
> > proc rw 0 0
> > sysfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/sys
> > sysfs rw 0 0
> > tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw,mode=755 0 0
> > tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> > devpts
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/pts
> > devpts rw,gid=5,mode=620 0 0
> > tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/shm
> > tmpfs rw 0 0
> > tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw,mode=755 0 0
> > tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> >
> > and after the restore :
> >
> >  none /sys sysfs rw,nosuid,nodev,noexec 0 0
> > none /proc proc rw,nosuid,nodev,noexec 0 0
> > udev /dev tmpfs rw,mode=755 0 0
> > /dev/disk/by-uuid/52755e51-82e3-4df7-bdee-a91e834b04c1 / ext3
> > rw,relatime,errors=remount-ro,data=ordered 0 0
> > tmpfs /lib/init/rw tmpfs rw,nosuid,mode=755 0 0
> > fusectl /sys/fs/fuse/connections fusectl rw 0 0
> > varrun /var/run tmpfs rw,nosuid,mode=755 0 0
> > varlock /var/lock tmpfs rw,nosuid,nodev,noexec 0 0
> > tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
> > devpts /dev/pts devpts rw,nosuid,noexec,gid=5,mode=620 0 0
> > /dev/sda7 /mnt/data ext3 rw,nosuid,nodev,errors=continue,data=ordered 0 0
> > /dev/sda8 /tmp/qemuShare vfat
> >
> rw,sync,dirsync,nosuid,nodev,fmask=0022,dmask=0022,allow_utime=177777,codepage=cp437,iocharset=utf8
> > 0 0
> > rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
> > nfsd /proc/fs/nfsd nfsd rw 0 0
> > binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec 0
> 0
> > gvfs-fuse-daemon /home/all/.gvfs fuse.gvfs-fuse-daemon
> > rw,nosuid,nodev,user_id=1000,group_id=1000 0 0
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/private
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root
> > simfs rw 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/proc
> > proc rw,nosuid,noexec,nodiratime 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/sys
> > sysfs rw 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/pts
> > devpts rw,gid=5,mode=620 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/shm
> > tmpfs rw 0 0
> > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw 0 0
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/private
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > simfs rw 0 0
> >
> >
> > Here is the diff between both checks:
> >
> >
> >
> > < proc
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/proc
> > proc rw 0 0
> > < sysfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/sys
> > sysfs rw 0 0
> > < tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw,mode=755 0 0
> > < tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> > < devpts
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/pts
> > devpts rw,gid=5,mode=620 0 0
> > < tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/shm
> > tmpfs rw 0 0
> > < tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw,mode=755 0 0
> > < tmpfs
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> > ---
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/proc
> > proc rw,nosuid,noexec,nodiratime 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/sys
> > sysfs rw 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > tmpfs rw 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/pts
> > devpts rw,gid=5,mode=620 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/dev/shm
> > tmpfs rw 0 0
> > > none
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/run
> > tmpfs rw 0 0
> > >
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/private
> >
> /mnt/data/catalogue/machines/master/0c0cf7cb-efb4-4065-ac2d-e63ad51e72cf/root/var/lock
> > simfs rw 0 0
> >
> >
> > thanks
> >
> > anthony
> >
> >
> >
> >
> > 2009/9/29 Vitaliy Gusev <vgusev at openvz.org>
> >
> > > On Friday 11 September 2009 03:43:45 pm Anthony wrote:
> > > > Hi,
> > > >
> > > > Thanks for replying.
> > > >
> > > > I'm using linux 2.6.26-2-openvz-amd64 (in Ubuntu), and the OS
> template
> > > > is ubuntu-6.06-i386-minimal.tar.gz
> > >
> > > Hello! Can you show output 'cat /proc/mounts' in case:  before first
> chkpnt
> > > and  after restore ?
> > >
> > > >
> > > > Regards
> > > > Anthony
> > > >
> > > > On Fri, Sep 11, 2009 at 12:59 PM, Thorsten Schifferdecker
> > > > <tsd at debian.systs.org> wrote:
> > > > > reHi,
> > > > >
> > > > > please post your kernel version and used OS Template.
> > > > >
> > > > > Bye,
> > > > >  Thorsten
> > > > >
> > > > > Anthony - wrote:
> > > > >> Hi,
> > > > >>
> > > > >> I'm trying to use the vzctl chkpnt/restore commands.
> > > > >>
> > > > >> Here is what I get :
> > > > >>
> > > > >> 1st chkpnt OK:
> > > > >>
> > > > >> sudo vzctl chkpnt 100 --dumpfile dump1
> > > > >> Setting up checkpoint...
> > > > >>       suspend...
> > > > >>       dump...
> > > > >>       kill...
> > > > >> VE is unmounted
> > > > >> Checkpointing completed succesfully
> > > > >>
> > > > >>
> > > > >>
> > > > >> restore OK:
> > > > >>
> > > > >> sudo vzctl restore 100 --dumpfile dump1
> > > > >> Restoring VE ...
> > > > >> Warning: distribution not specified default used
> /etc/vz/dists/default
> > > > >> Starting VE ...
> > > > >> VE is mounted
> > > > >>       undump...
> > > > >> Setting CPU units: 10561
> > > > >>
> > > > >> Configure meminfo: 138288
> > > > >> Configure veth devices: hnsTap0 hnsTap1
> > > > >>       resume...
> > > > >> VE start in progress...
> > > > >> Restoring completed succesfully
> > > > >>
> > > > >>
> > > > >>
> > > > >> and the 2nd chkpnt fails:
> > > > >>
> > > > >> sudo vzctl chkpnt 100 --dumpfile dump1
> > > > >> Setting up checkpoint...
> > > > >>       suspend...
> > > > >>       dump...
> > > > >> Can not dump VE: Invalid argument
> > > > >> Error: d_path is invisible /var/lock
> > > > >> Checkpointing failed
> > > > >>
> > > > >>
> > > > >>
> > > > >> What is the problem with /var/lock ?
> > > > >>
> > > > >> ls -lh /var/lock
> > > > >> total 0
> > > > >> drwxr-xr-x 2 www-data root 40 2009-09-10 09:15 apache2
> > > > >> -rw-r--r-- 1 root     root  0 2009-09-10 09:15 vz
> > > > >>
> > > > >>
> > > > >>
> > > > >> Thanks
> > > > >> Anthony
> > > > >>
> > > > >>
> > > > >>
> > >
> ------------------------------------------------------------------------
> > > > >>
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>
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