[ovirt-users] 100% disk utilization on Hosted Engine

[Yedidyah Bar David]

On Sun, Oct 30, 2016 at 7:16 PM, Anantha Raghava
<raghav at exzatechconsulting.com> wrote:
> Hello Didi,
>
> Apart form oVirt-engine, nothing else is running on the server. Engine is
> running on CentOS 7.2 minimal installation. We have 2 hosts, 1 iSCSI
> storage, about 19 VMs and 5 Networks. In this setup oVirt engine is running
> in a separate VM created on VMWare ESXi. In 20 odd days, it consumed around
> 70GB out of 100 GB!!!
>
> In another setup, we have only one host, hosted engine, 9 VMs, 2 Networks, 1
> FC Storage. In about 30 odd days, 100% of available 100 GB consumed!! It is
> in this setup CentOS is not allowing us to loginto engine VM as no space to
> create any temp files on the storage. We have ISO Domain created on this
> engine VM. But that's only about 3 GB in size.
>
> Both setup are not exposed to internet. Hence, any malware is ruled out.
>
> We have observed, the logs are also growing and we have not found that logs
> are not rotating. All logs right from day one are kept intact. Nothing in
> the user files. Because no user is allowed to use this VM.
>
> What else it could be? 100% consumption without even a warning, is very
> strange.

Please check/share output of 'du -x /'. Thanks.

>
> --
>
> Thanks & Regards,
>
>
> Anantha Raghava eXza Technology Consulting & Services
>
> Do not print this e-mail unless required. Save Paper & trees.
>
> On Sunday 30 October 2016 07:20 PM, Yedidyah Bar David wrote:
>
> On Sun, Oct 30, 2016 at 3:01 PM, Anantha Raghava
> <raghav at exzatechconsulting.com> wrote:
>
> Hi,
>
> In another instance where the engine is on a different host, we have
> observed that out of 100 GB nearly 70% is consumed in just about 20 odd
> days.
>
> Is it that DWH database and the logs really take so much of space so fast?
>
> Are you sure that DWH database is the only thing using much space? Did you
> check disk space usage?
>
> DWH db size depends on the size of your setup - number of
> hosts/VMs/disks/NICs/etc.
>
> You can also affect this by configuring granularity and history
> length, check e.g.:
>
> https://www.mail-archive.com/search?l=users@ovirt.org&q=subject:%22Re\%3A+\[ovirt\-users\]+Limit+DWH+database+size%22&o=newest
>
> http://lists.ovirt.org/pipermail/users/2016-September/042419.html
>
> How do we reduce the disk utilization? This will be a major issue when
> compared to other hypervisors management platform.
>
> How do we address this and arrest this super fast disc consumption?
>
> --
>
> Thanks & Regards,
>
>
> Anantha Raghava eXza Technology Consulting & Services Do not print this
> e-mail unless required. Save Paper & trees.
> On Saturday 29 October 2016 08:32 AM, Anantha Raghava wrote:
>
> Hi,
>
> I have hit a unique problem. Using oVirt 4.0.2.7-1.el7.centos since last one
> month and I have hit a unique problem. The Engine is reporting that Disk
> space allocated to Hosted engine is full and is not allowing to login to
> engine's console to clear some files as well. When I try to add additional
> storage to Hosted engine, engine admin portal reports that as Engine VM is
> not managed by oVirt Engine, it cannot extend the storage.
>
> Now the questions are:
>
> 1. Is it that enabling advanced DWH on the engine host is the root cause for
> 100GB of disk getting filled in about 1 month?
>
> 2. How do we clear the disk of some unwanted files and extend the space?
>
> 3. How do we reset the DWH database to basic?
>
>
> Note: CentOS 7.2 is not even allowing us to login to console to do any
> action. Booting the Hosted Engine VM with Live CD etc., looks like is ruled
> out in this case.
> --
>
> Thanks & Regards,
>
>
> Anantha Raghava eXza Technology Consulting & Services
>
> Do not print this e-mail unless required. Save Paper & trees.
>
>
>
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-- 
Didi