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size of a backup [message #30916]

Tue, 10 June 2008 12:31

sander2930
Messages: 7
Registered: May 2008

Junior Member

Hi,

when I do a "df -h" in a vz I get "4.7GB usage"

Filesystem Size Used Avail Use% Mounted on
/dev/simfs 63G 4.7G 55G 8% /
tmpfs 503M 0 503M 0% /lib/init/rw
tmpfs 503M 0 503M 0% /dev/shm

But when I check the backup image file its "9.6GB" vzdump-110.tar (9679052800 bytes)

How come the backup is so much bigger?

Its a lvm backup

vzdump --dumpdir /var --snapshot 110

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Re: size of a backup [message #31291 is a reply to message #30916]

Tue, 24 June 2008 05:54

dowdle
Messages: 261
Registered: December 2005
Location: Bozeman, Montana

Senior Member

What is it you are backing up? /vz/private/{CTID} or is it including /vz/root too?

--
TYL, Scott Dowdle
Belgrade, Montana, USA

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Re: size of a backup [message #31298 is a reply to message #30916]

Tue, 24 June 2008 10:40

sander2930
Messages: 7
Registered: May 2008

Junior Member

This is only the private dir.

I use the command: vzdump --dumpdir /var --snapshot 110

I've verified that it, by some mistake, doesn't include the root dir.

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Re: size of a backup [message #31309 is a reply to message #31298]

Tue, 24 June 2008 15:05

dowdle
Messages: 261
Registered: December 2005
Location: Bozeman, Montana

Senior Member

I don't use vzdump so I'm not that familiar with it... BUT take a look at the backup. Do some du -sh commands on the directories and compare them to the original. Figure out where the extra used space is coming from.

--
TYL, Scott Dowdle
Belgrade, Montana, USA

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Re: size of a backup [message #31326 is a reply to message #30916]

Tue, 24 June 2008 20:40

sander2930
Messages: 7
Registered: May 2008

Junior Member

I noticed something strange.

This is taken from within the VE:

6.1G /var/www/virtual/

Then I do "df -h":

Filesystem Size Used Avail Use% Mounted on
/dev/simfs 44G 5.1G 35G 13% /
tmpfs 503M 0 503M 0% /lib/init/rw
tmpfs 503M 0 503M 0% /dev/shm

It looks like df doesn't give me the correct answer.

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FIXED: Re: size of a backup [message #31327 is a reply to message #31326]

Tue, 24 June 2008 20:52

sander2930
Messages: 7
Registered: May 2008

Junior Member

ok,

I had to read some more:

http://wiki.openvz.org/OpenVZ_disk_quota%2C_df_and_stat_weir d_behaviour

vzquota drop 110 did the job.

Thanks anyway for the support Wink

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