[PVE-User] backup takes so long to finish

[Gilberto Nunes]

Just for compare, the very same backup from same VM takes 50 minutes, on
previously scenario, I meant, run in a single IBM M4 server with SAS
disks...
Now, in the Storage and an IBM x3250 M4 server, with 128GB of memory, takes
6 hours!
I can't understand why! So weird!



2014-08-27 14:21 GMT-03:00 Gilberto Nunes <gilberto.nunes32 at gmail.com>:

> Well... This not justify all this low performance, since the VM previously
> ran on another IBM machine with single SAS and backup task ran nicely.
> Since the VM now running in high level enterprise Storage, I expected more
> performance, if I am not wrong with that...
>
>
> 2014-08-27 14:13 GMT-03:00 Iosif Peterfi <iosif.peterfi at gmail.com>:
>
> Maybe you will have better performance if you split them. So keep the
>> busiest database on IBM storage and put the others on USB. This way you
>> share the I/O load.
>>
>> Regards,
>> Iosif
>>
>>
>> On Wed, Aug 27, 2014 at 7:09 PM, Gilberto Nunes <
>> gilberto.nunes32 at gmail.com> wrote:
>>
>>> Unfortunately, I do not have such luxury by now... SSD is out of the
>>> question, for a moment...
>>> But I changed from USB device to SAS device, in hope to improve the I/O
>>> performance...  But no success...
>>> The VM itself, is running is SAS as well, since it hosted in an IBM
>>> Storage...
>>>
>>> I'm still search the cause of issue...
>>>
>>> Thank you BTW...
>>>
>>>
>>> 2014-08-27 14:04 GMT-03:00 Iosif Peterfi <iosif.peterfi at gmail.com>:
>>>
>>> Mitigate the I/O bottleneck by assigning different hard drives, even
>>>> consider using enterprise grade ssd.
>>>>
>>>>
>>>>
>>>>
>>>> On Wed, Aug 27, 2014 at 6:55 PM, Gilberto Nunes <
>>>> gilberto.nunes32 at gmail.com> wrote:
>>>>
>>>>> Hum... At first moment, I thought I/O could being a trouble, since I
>>>>> was ran backup in USB devices.
>>>>> But now, I ran backup task on SAS disk! So performance and I/O is not
>>>>> an issue here...
>>>>> And, I can't shrink the file, because the entire disk is being used to
>>>>> all databases as I described before...
>>>>>
>>>>> If somebody else has any other advice, I will appreciate...
>>>>>  Thank you
>>>>>
>>>>>
>>>>> 2014-08-27 13:47 GMT-03:00 Bart Lageweg | Bizway <bart at bizway.nl>:
>>>>>
>>>>>   High I/O when you backup ?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Try https://pve.proxmox.com/wiki/Shrink_Qcow2_Disk_Files (when you
>>>>>> have a good backup!)
>>>>>>
>>>>>>
>>>>>>
>>>>>> *Van:* pve-user [mailto:pve-user-bounces at pve.proxmox.com] *Namens *Gilberto
>>>>>> Nunes
>>>>>> *Verzonden:* woensdag 27 augustus 2014 18:47
>>>>>> *Aan:* pve-user at pve.proxmox.com
>>>>>> *Onderwerp:* [PVE-User] backup takes so long to finish
>>>>>>
>>>>>>
>>>>>>
>>>>>> Hello
>>>>>>
>>>>>> I have a VM with Windows 2012 running nicely in PVE 3.2.
>>>>>>
>>>>>> This VM has a 300 GB disk size that was re-partition with 5 or 6
>>>>>> different parts, in order to allocate different databases...
>>>>>>
>>>>>> The issue is that the backup task takes 6 hours to generate a lzo
>>>>>> file with 13 GB size!
>>>>>>
>>>>>> However, I have another VM, which is Windows 2008 with disk 120 GB
>>>>>> size.
>>>>>>
>>>>>> The backup makes 74 GB file of size, and takes approximately 30
>>>>>> minutes!!!
>>>>>>
>>>>>> I can't see why the first task took so long time to finish!!!
>>>>>>
>>>>>> Can anybody assist me??
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>>
>>>>>>
>>>>>> Gilberto Ferreira
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Gilberto Ferreira
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> pve-user mailing list
>>>>> pve-user at pve.proxmox.com
>>>>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>> Gilberto Ferreira
>>>
>>>
>>
>
>
> Gilberto Ferreira
>
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