<div dir="ltr"><div><div>Well I donīt know exactly but perhaps the reason is because the VM is hosted over LVM-on-iSCSI???</div><div>Just a idea...I am really lost here...Trying find a reason to explain all the lost of performance...</div>
<div>I took all necessary cares about cables, switches, storage and now a simple backup task takes so long to finish... I am stunned!...</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-27 14:53 GMT-03:00 Iosif Peterfi <span dir="ltr"><<a href="mailto:iosif.peterfi@gmail.com" target="_blank">iosif.peterfi@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Probably there is the bottleneck. 1Gbit = 100MB/s. Probably your SAS might be faster than considering it uses SATA II 300 MB/s or SATA III 600 MB/s. <br>
<br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">
On Wed, Aug 27, 2014 at 7:35 PM, Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>>> <span style="font-family:arial,sans-serif;font-size:13px">Is the storage over iSCSI ?</span><div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div></div><div>
<span style="font-family:arial,sans-serif;font-size:13px">Yes! Standard iSCSI. I not enable trunk yet, I meant, bonding... You know...</span></div><div>
<div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:13px">>> Is the storage via 1GB link ?</span><span style="font-family:arial,sans-serif;font-size:13px"><br>
</span></div><div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div></div><div><span style="font-family:arial,sans-serif;font-size:13px">Yes... Switch gigaethernet, CAT6 and all NIC are gigaethernet as well...</span></div>
<div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-27 14:33 GMT-03:00 Iosif Peterfi <span dir="ltr"><<a href="mailto:iosif.peterfi@gmail.com" target="_blank">iosif.peterfi@gmail.com</a>></span>:<div>
<div><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Is the storage over iSCSI ? Is the storage via 1GB link ?<br></div><div><div>
<div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Aug 27, 2014 at 7:29 PM, Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>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...</div>
<div>Now, in the Storage and an IBM x3250 M4 server, with 128GB of memory, takes 6 hours!</div>
<div>I can't understand why! So weird!</div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-27 14:21 GMT-03:00 Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div>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.</div>
<div>Since the VM now running in high level enterprise Storage, I expected more performance, if I am not wrong with that...</div>
</div></div></div><div class="gmail_extra"><div><div><br><br><div class="gmail_quote">2014-08-27 14:13 GMT-03:00 Iosif Peterfi <span dir="ltr"><<a href="mailto:iosif.peterfi@gmail.com" target="_blank">iosif.peterfi@gmail.com</a>></span>:<div>
<div><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>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.<br>
<br></div>Regards,<br>Iosif<br></div><div><div>
<div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Aug 27, 2014 at 7:09 PM, Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Unfortunately, I do not have such luxury by now... SSD is out of the question, for a moment...<div>But I changed from USB device to SAS device, in hope to improve the I/O performance... But no success...</div>
<div>The VM itself, is running is SAS as well, since it hosted in an IBM Storage...</div><div><br></div><div>I'm still search the cause of issue...</div><div><br></div><div>Thank you BTW...</div><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-08-27 14:04 GMT-03:00 Iosif Peterfi <span dir="ltr"><<a href="mailto:iosif.peterfi@gmail.com" target="_blank">iosif.peterfi@gmail.com</a>></span>:<div><div><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Mitigate the I/O bottleneck by assigning different hard drives, even consider using enterprise grade ssd.<br><br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Wed, Aug 27, 2014 at 6:55 PM, Gilberto Nunes <span dir="ltr"><<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div><div>Hum... At first moment, I thought I/O could being a trouble, since I was ran backup in USB devices.</div>
<div>But now, I ran backup task on SAS disk! So performance and I/O is not an issue here...</div>
<div>And, I can't shrink the file, because the entire disk is being used to all databases as I described before...</div></div><div><br></div><div><div>If somebody else has any other advice, I will appreciate...</div>
<div>
Thank you</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-27 13:47 GMT-03:00 Bart Lageweg | Bizway <span dir="ltr"><<a href="mailto:bart@bizway.nl" target="_blank">bart@bizway.nl</a>></span>:<div>
<div><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="#0563C1" vlink="#954F72" lang="NL">
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" lang="EN-US">High I/O when you backup ?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" lang="EN-US">Try
<a href="https://pve.proxmox.com/wiki/Shrink_Qcow2_Disk_Files" target="_blank">https://pve.proxmox.com/wiki/Shrink_Qcow2_Disk_Files</a> (when you have a good backup!)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Van:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> pve-user [mailto:<a href="mailto:pve-user-bounces@pve.proxmox.com" target="_blank">pve-user-bounces@pve.proxmox.com</a>]
<b>Namens </b>Gilberto Nunes<br>
<b>Verzonden:</b> woensdag 27 augustus 2014 18:47<br>
<b>Aan:</b> <a href="mailto:pve-user@pve.proxmox.com" target="_blank">pve-user@pve.proxmox.com</a><br>
<b>Onderwerp:</b> [PVE-User] backup takes so long to finish<u></u><u></u></span></p><div><div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">Hello<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I have a VM with Windows 2012 running nicely in PVE 3.2.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">This VM has a 300 GB disk size that was re-partition with 5 or 6 different parts, in order to allocate different databases...<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">The issue is that the backup task takes 6 hours to generate a lzo file with 13 GB size!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">However, I have another VM, which is Windows 2008 with disk 120 GB size.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">The backup makes 74 GB file of size, and takes approximately 30 minutes!!!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I can't see why the first task took so long time to finish!!!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Can anybody assist me??<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<div>
<p class="MsoNormal">Gilberto Ferreira<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
</div>
</div></div></div>
</div>
</blockquote></div></div></div><br><br clear="all"><div><br></div><div dir="ltr"><div>Gilberto Ferreira<br></div><div></div><div><br></div></div>
</div></div>
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<br></blockquote></div><br></div>
</blockquote></div></div></div><br><br clear="all"><div><br></div><div dir="ltr"><div><br></div><div>Gilberto Ferreira</div><div></div><div><br></div></div>
</div></div>
</blockquote></div><br></div>
</div></div></blockquote></div></div></div><br></div></div><div><div dir="ltr"><br><div><br></div><div>Gilberto Ferreira</div><div></div></div></div></div></blockquote></div><div dir="ltr"><br></div>
</div></div>
</blockquote></div><br></div>
</div></div></blockquote></div></div></div><br><br clear="all"><div><br></div><div dir="ltr"><div>Gilberto Ferreira</div><div></div><div><br></div></div>
</div></div>
</blockquote></div><br></div>
</div></div></blockquote></div><div dir="ltr"><br><div><br></div><div>Gilberto Ferreira</div><div></div><div><br></div></div>
</div></div>