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Quotas / Disk Space [message #8051] Fri, 03 November 2006 20:19 Go to next message
Douglas Phillips is currently offline  Douglas Phillips
Messages: 4
Registered: November 2006
Junior Member
First of all, this is my first post to the list. I've tried to do
some research and investigation on this, but at this point have not
found anything useful.

Here's the scenario:
Customer using OpenVZ, RHEL 4 Update 3, Kernel 2.6.9-023stab016.2-smp
They tell me that they have 200G of space on the drive, and there is
one partition that is not mounted, but when I try to mount comes up
with "/dev/hda6 already mounted or /mnt/test busy".

I'm assuming that VZ is using that partition in a raw format,
although I have no specific information that I've found that confirms
that. Am I correct?

Mount points on the host machine are as follows:
[root@(machine) ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 20G 9.1G 9.7G 49% /
/dev/hda1 99M 45M 50M 48% /boot
none 1008M 0 1008M 0% /dev/shm
/dev/hda2 20G 13G 5.8G 70% /var
/dev/mapper/vps-swap 20G 18G 1.7G 92% /srv/vservers/swap
[root@(machine) ~]# mount
/dev/hda3 on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hda1 on /boot type ext3 (rw)
none on /dev/shm type tmpfs (rw)
/dev/hda2 on /var type ext3 (rw)
/dev/mapper/vps-swap on /srv/vservers/swap type ext3 (rw)
[root@(machine) ~]#

The problem is as follows:
There are 6 VEs currently running on the system, 4 with quotas set at
11GB, 1 at 5GB, and the one in question which was at 5GB, but which I
upped to 20GB. When I "rebooted" this VPS, #102, and I go back, the
quota stat shows quota back at 5GB.

The internal df output shows the following:
bash-3.00# df -h
Filesystem Size Used Avail Use% Mounted on
simfs 3.4G 699M 1.7G 30% /
tmpfs 1008M 0 1008M 0% /dev/shm
tmpfs 1008M 0 1008M 0% /dev/shm
bash-3.00#

The desired result is that the filesystem would have 20GB available
to it. Obviously that's not happening. Since I am not familiar with
OpenVZ, I'd like to get some suggestions from the community on where
I should look to resolve the issue.

Thanks in advance,

--
Douglas G. Phillips
Simple Business Solutions
Re: Quotas / Disk Space [message #8081 is a reply to message #8051] Tue, 07 November 2006 08:35 Go to previous messageGo to next message
Mishin Dmitry is currently offline  Mishin Dmitry
Messages: 112
Registered: February 2006
Senior Member
Hi, Douglas!

Answers are inline.

On Friday 03 November 2006 23:19, Douglas Phillips wrote:
> First of all, this is my first post to the list. I've tried to do
> some research and investigation on this, but at this point have not
> found anything useful.
>
> Here's the scenario:
> Customer using OpenVZ, RHEL 4 Update 3, Kernel 2.6.9-023stab016.2-smp
I advice to upgrade to newer 2.6.9 kernel - it is much more stable, than this.

> They tell me that they have 200G of space on the drive, and there is
> one partition that is not mounted, but when I try to mount comes up
> with "/dev/hda6 already mounted or /mnt/test busy".
>
> I'm assuming that VZ is using that partition in a raw format,
> although I have no specific information that I've found that confirms
> that. Am I correct?
No, OpenVZ doesn't use raw partitions.
>
> Mount points on the host machine are as follows:
> [root@(machine) ~]# df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/hda3 20G 9.1G 9.7G 49% /
> /dev/hda1 99M 45M 50M 48% /boot
> none 1008M 0 1008M 0% /dev/shm
> /dev/hda2 20G 13G 5.8G 70% /var
> /dev/mapper/vps-swap 20G 18G 1.7G 92% /srv/vservers/swap
This is probably an answer - /dev/hda6 is used as a part of LVM group.

> [root@(machine) ~]# mount
> /dev/hda3 on / type ext3 (rw)
> none on /proc type proc (rw)
> none on /sys type sysfs (rw)
> none on /dev/pts type devpts (rw,gid=5,mode=620)
> /dev/hda1 on /boot type ext3 (rw)
> none on /dev/shm type tmpfs (rw)
> /dev/hda2 on /var type ext3 (rw)
> /dev/mapper/vps-swap on /srv/vservers/swap type ext3 (rw)
> [root@(machine) ~]#
>
> The problem is as follows:
> There are 6 VEs currently running on the system, 4 with quotas set at
> 11GB, 1 at 5GB, and the one in question which was at 5GB, but which I
> upped to 20GB. When I "rebooted" this VPS, #102, and I go back, the
> quota stat shows quota back at 5GB.
Probably, you uppped quota without --save flag. You could check this by `grep
DISKSPACE /etc/vz/conf/102.conf` command.

>
> The internal df output shows the following:
> bash-3.00# df -h
> Filesystem Size Used Avail Use% Mounted on
> simfs 3.4G 699M 1.7G 30% /
> tmpfs 1008M 0 1008M 0% /dev/shm
> tmpfs 1008M 0 1008M 0% /dev/shm
> bash-3.00#
>
> The desired result is that the filesystem would have 20GB available
> to it. Obviously that's not happening. Since I am not familiar with
> OpenVZ, I'd like to get some suggestions from the community on where
> I should look to resolve the issue.
>
> Thanks in advance,
>
> --
> Douglas G. Phillips
> Simple Business Solutions
--
Thanks,
Dmitry.
Re: SOLVED: Quotas / Disk Space [message #8085 is a reply to message #8081] Tue, 07 November 2006 09:53 Go to previous message
Douglas Phillips is currently offline  Douglas Phillips
Messages: 4
Registered: November 2006
Junior Member
On Nov 7, 2006, at 2:35 AM, Dmitry Mishin wrote:

>> /dev/mapper/vps-swap 20G 18G 1.7G 92% /srv/vservers/swap
> This is probably an answer - /dev/hda6 is used as a part of LVM group.

That was the answer!! It was staring me in the face and I was
missing it. Thanks very much.


>> upped to 20GB. When I "rebooted" this VPS, #102, and I go back, the
>> quota stat shows quota back at 5GB.
> Probably, you uppped quota without --save flag. You could check
> this by `grep
> DISKSPACE /etc/vz/conf/102.conf` command.

I missed that flag as well.

--
Douglas Phillips
Simple Business Solutions
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