After cloning a Debian host, I found everything working except MySQL.

I had to chown its binaries, databases and log folder back to mysql  
from root.

Is this normal and should I expect other permissions to have changed?  
When copying the VZ does the ownership of files take on whatever  
matches the UID on the host system?

regards,
Peter.

Peter,

It depends on what you mean by "cloning". What exact command/operations
you did?

BTW, do you mean OpenVZ or Virtuozzo?

Thanks,
Kirill



Peter Machell wrote:
> After cloning a Debian host, I found everything working except MySQL.
> 
> I had to chown its binaries, databases and log folder back to mysql  
> from root.
> 
> Is this normal and should I expect other permissions to have changed?  
> When copying the VZ does the ownership of files take on whatever  
> matches the UID on the host system?
> 
> regards,
> Peter.

Le lundi 17 décembre 2007 15:15, Kirill Korotaev a écrit :
> Peter,
>
> It depends on what you mean by "cloning". What exact command/operations
> you did?
>
> BTW, do you mean OpenVZ or Virtuozzo?
>
> Thanks,
> Kirill
>
> Peter Machell wrote:
> > After cloning a Debian host, I found everything working except MySQL.
> >
> > I had to chown its binaries, databases and log folder back to mysql
> > from root.
> >
> > Is this normal and should I expect other permissions to have changed?
> > When copying the VZ does the ownership of files take on whatever
> > matches the UID on the host system?
> >
> > regards,
> > Peter.
Hi Peter,

If you use rsync to copy your VE, you must add this option : --numeric-ids

Cheers.

-- 
Jean-Michel Caricand
Tél: 03.81.66.20.63
E-mail: jean-michel.caricand@lifc.univ-fcomte.fr

Equipe systèmes
Laboratoire d'Informatique de l'Université de Franche-Comté
16, route de Gray - 25030 BESANÇON CEDEX

Le lundi 17 décembre 2007 13:40, Peter Machell a écrit :
> After cloning a Debian host, I found everything working except MySQL.
>
> I had to chown its binaries, databases and log folder back to mysql
> from root.
>
> Is this normal and should I expect other permissions to have changed?
> When copying the VZ does the ownership of files take on whatever
> matches the UID on the host system?
>
> regards,
> Peter.
Hi Peter,

If you use rsync to copy your VE, you must add this option : --numeric-ids

Cheers.

-- 
Jean-Michel Caricand
Tél: 03.81.66.20.63
E-mail: jean-michel.caricand@lifc.univ-fcomte.fr

Equipe systèmes
Laboratoire d'Informatique de l'Université de Franche-Comté
16, route de Gray - 25030 BESANÇON CEDEX

On 18/12/2007, at 12:15 AM, Kirill Korotaev wrote:

> Peter,
>
> It depends on what you mean by "cloning". What exact command/ 
> operations
> you did?

vzctl stop xx
cp -R /vz/private/xx /vz/private/xxx
cp -R /etc/vz/conf/xx.conf /etc/vz/conf/xxx.conf
vzctl start xxx

> BTW, do you mean OpenVZ or Virtuozzo?

OpenVZ

regards,
Peter.

Peter Machell wrote:
> vzctl stop xx
> cp -R /vz/private/xx /vz/private/xxx
> cp -R /etc/vz/conf/xx.conf /etc/vz/conf/xxx.conf
> vzctl start xxx

To have cp preserve permissions, use the -p flag.

I use tar instead of cp, for situation like this. Tar, unlike cp, is 
smart enough to handle symbolic links, permissions, ownerships, and 
sparse files. Use this age-old Unix Jedi trick:

mkdir /home/vz/private/2
cd /home/vz/private/1
tar cf - * | ( cd ../2 ; tar xvf - )

-- 
Gregor Mosheh / Greg Allensworth
System Administrator, HostGIS cartographic development & hosting services
http://www.HostGIS.com/

"Remember that no one cares if you can back up,
  only if you can restore." - AMANDA

Gregor Mosheh wrote:
> Peter Machell wrote:
>> vzctl stop xx
>> cp -R /vz/private/xx /vz/private/xxx
>> cp -R /etc/vz/conf/xx.conf /etc/vz/conf/xxx.conf
>> vzctl start xxx
> 
> To have cp preserve permissions, use the -p flag.
> 
> I use tar instead of cp, for situation like this. Tar, unlike cp, is 
> smart enough to handle symbolic links, permissions, ownerships, and 
> sparse files. Use this age-old Unix Jedi trick:
> 
> mkdir /home/vz/private/2
> cd /home/vz/private/1
> tar cf - * | ( cd ../2 ; tar xvf - )

That doesn't need a -p option? ie

  'tar xpvf'

I tend to use 'tar --numeric-owner -cf' as well, just in case.

Steve Wray wrote:
>> tar cf - * | ( cd ../2 ; tar xvf - )
> That doesn't need a -p option? ie
> I tend to use 'tar --numeric-owner -cf' as well, just in case.

I've never used the -p flag but it's always preserved the numerics just 
fine. That's Slackware and Fedora, probably others. Couldn't hurt to use 
it, though.

-- 
Gregor Mosheh / Greg Allensworth
System Administrator, HostGIS cartographic development & hosting services
http://www.HostGIS.com/

"Remember that no one cares if you can back up,
  only if you can restore." - AMANDA

Le lundi 17 décembre 2007 23:50, Peter Machell a écrit :
> On 18/12/2007, at 12:15 AM, Kirill Korotaev wrote:
> > Peter,
> >
> > It depends on what you mean by "cloning". What exact command/
> > operations
> > you did?
>
> vzctl stop xx
> cp -R /vz/private/xx /vz/private/xxx
> cp -R /etc/vz/conf/xx.conf /etc/vz/conf/xxx.conf
> vzctl start xxx
>
> > BTW, do you mean OpenVZ or Virtuozzo?
>
> OpenVZ
>
> regards,
> Peter.
Hi Peter,

I think rsync is the best solution to copy a VE :-) 

Example : 

# rsync -av -numeric-ids /vz/private/101 /vz/private/102 (on the same host)

See : 
http://forum.openvz.org/index.php?t=msg&goto=3164&

Cheers.

-- 
Jean-Michel Caricand
Tél: 03.81.66.20.63
E-mail: jean-michel.caricand@lifc.univ-fcomte.fr

Equipe systèmes
Laboratoire d'Informatique de l'Université de Franche-Comté
16, route de Gray - 25030 BESANÇON CEDEX

On 18/12/2007, at 5:14 PM, Jean-Michel Caricand wrote:
>
> Hi Peter,
>
> I think rsync is the best solution to copy a VE :-)
>
> Example :
>
> # rsync -av -numeric-ids /vz/private/101 /vz/private/102 (on the  
> same host)


Thanks Jean-Michel that works a treat. You forgot a - though, for the  
record the right command (at least on Debian) is:

# rsync -av --numeric-ids /vz/private/101 /vz/private/102

regards,
Peter.