Once again, thank you very much for your support!
I'm getting closer to actually backup my data.
One more question before I press the button.
I have increased the size of the file and used "fsck.ext3 newfile".
After mounting it and checking with "df" it appears that the
file system is still 1 Gb instead of 50 Gb which is the size of the
new file. Shouldn't "df" show the size 50 Gb?
Best regards,
Johan
2007/12/11, dan <[EMAIL PROTECTED]>:
>
> it should write up the first Gb and then zeros for the rest.
>
> scratch that, i got the same result, it only writes the first 1Gb. so you
> could create another 99Gb file that is blank and then use cat
>
> dd if=/dev/zero of=/blank bs=1M count=99000
>
> then use cat
>
> cat backup_file blank > newbackupfile
>
> you should then get 99Gb+1Gb=100Gb.
>
> remember to use the fsck on it at the end.
>
> On Dec 10, 2007 11:25 PM, Johan Ekh < [EMAIL PROTECTED]> wrote:
>
> > It seems to work! Magic...
> > I started to create a 1 Gb file. Then I tried to expand it to 100Gb but
> > it became also 1 Gb.
> >
> > I used "dd if=backup_sparse of=backup_100Gb bs=1M count=100000"
> >
> > Did do it wrong?
> >
> > /Johan
> >
> >
> >
> > 2007/12/10, dan <[EMAIL PROTECTED]>:
> >
> > > if all else fails, use a file and mount it with 'loop'
> > >
> > > you will get around all of the nfs issues except speed.
> > >
> > > you would mount the nas by nfs, create a sparse file
> > >
> > > > dd if=/dev/zero of=/nfsmountpoint/filename bs=1M count='how many mb
> > > > you want'
> > > >
> > >
> > > now make a filesystem on it
> > > mkfs/ext3 /nfsmountpoint/filename
> > >
> > > agree to the warning that it is not a block device
> > >
> > > now mount it
> > > mount -o loop /nfsmountpoint/filename /target
> > >
> > > df -h and see your new drive!
> > >
> > > alternatively, you could create a sparse file to mount but you would
> > > risk an overflow..
> > >
> > > better would be to create a file that is the right size today and
> > > expand it later. if you use ext3 you have create a 1Gb file, then when
> > > you
> > > need more space you can create a new file from the original file like so
> > >
> > > dd if=/path/to/original/file of=/newfile bs=1M count=newsize
> > > then
> > > fsck.ext3 /newfile
> > >
> > > then you have a new file with the old files contents ready to use.
> > >
> > > you can also use the linux software raid on files to create mirrors.
> > > even on two seperate nfs servers, though performance will suck.
> > >
> > >
> > >
> > >
> > >
> > > On Dec 10, 2007 11:07 AM, Les Mikesell < [EMAIL PROTECTED]> wrote:
> > >
> > > > Johan Ekh wrote:
> > > > > Thanks for your answer.
> > > > > However, I try to install backuppc as root but it is still not
> > > > possible
> > > > > to "chown".
> > > > > I can access the mounted disk as "root" or as any user. But not
> > > > "chown".
> > > > > Any ideas?
> > > > >
> > > > > Can you point me in the right direction regarding the
> > > > "no_root_squash"
> > > > > option?
> > > > > Is it used with the "mount" command?
> > > >
> > > > No, it is a server side option. Typically root (uid=0) from a
> > > > client is
> > > > mapped to 'nobody' on the server file system. If the server is
> > > > linux,
> > > > you need an /etc/exports line like:
> > > > /path/exported
> > > > 192.168.0.0/255.255.255.0(rw,no_root_squash,async)<http://192.168.0.0/255.255.255.0%28rw,no_root_squash,async%29>
> > > > ^^^ network range
> > > >
> > > > Other NFS servers may have a different syntax.
> > > >
> > > > --
> > > > Les Mikesell
> > > > [EMAIL PROTECTED]
> > > >
> > >
> > >
> >
>
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