------=_Part_432399_1800004496.1430477334386 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Hello I have create DC with a shared storage but I would like also add my servers local resources . I t is possible in ovirt - hypervisior ? Regards. MF ------=_Part_432399_1800004496.1430477334386 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: arial, helvetica, sans-serif; font-s= ize: 12pt; color: #000000"><div>Hello<br></div><div><br data-mce-bogus=3D"1= "></div><div><span id=3D"result_box" class=3D"" lang=3D"en"><span class=3D"= hps">I have create</span> <span class=3D"hps">DC</span> <span class=3D"hps"=
with</span> <span class=3D"hps">a shared</span> <span class=3D"hps">storag= e</span> <span class=3D"hps">but I would</span> like <span class=3D"hps"></= span>also add <span>my servers</span> <span class=3D"hps">local resources</= span><span>.</span><span class=3D"hps"></span> I<span class=3D"hps">t is po= ssible in</span> <span class=3D"hps">ovirt</span><span class=3D"atn">-</spa= n><span class=3D"">hypervisior</span><span class=3D"">?</span></span></div>= <div><span class=3D"" lang=3D"en"><span class=3D""><br data-mce-bogus=3D"1"= </span></span></div><div><span class=3D"" lang=3D"en"><span class=3D"">Reg= ards.<br data-mce-bogus=3D"1"></span></span></div><div><span class=3D"" lan= g=3D"en"><span class=3D"">MF<br data-mce-bogus=3D"1"></span></span></div><d= iv> <br data-mce-bogus=3D"1"></div></div></body></html> ------=_Part_432399_1800004496.1430477334386--
------=_Part_11975926_999004072.1430643221102 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable you can't=20 Host is part of cluster which is part of DC.=20 DC can be shared or local only, can't be both.=20 Regards,=20 __________________________________________________=20 Aharon Canan=20 int phone - 8272036=20 ext phone - +97297692036=20 email - acanan@redhat.com=20 ----- Original Message -----
From: "Marcin Fabia=C5=84czyk" <marcin.fabianczyk@enicom.pl> To: users@ovirt.org Sent: Friday, May 1, 2015 1:48:54 PM Subject: [ovirt-users] Local Storage
Hello
I have create DC with a shared storage but I would like also add my serve= rs local resources . I t is possible in ovirt - hypervisior ?
Regards. MF
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
<span id=3D"result_box" class=3D"" lang=3D"en"><span class=3D"hps">I have = create</span> <span class=3D"hps">DC</span> <span class=3D"hps">with</span>= <span class=3D"hps">a shared</span> <span class=3D"hps">storage</span> <sp= an class=3D"hps">but I would</span> like <span class=3D"hps"></span>also ad= d <span>my servers</span> <span class=3D"hps">local resources</span><span>.= </span><span class=3D"hps"></span> I<span class=3D"hps">t is possible in</s=
------=_Part_11975926_999004072.1430643221102 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: comic sans ms,comic sans,sans-serif;= font-size: 10pt; color: #000000"><div>you can't<br></div><div><br></div><d= iv>Host is part of cluster which is part of DC.<br></div><div>DC can be sha= red or local only, can't be both.<br></div><div><br></div><div><span name= =3D"x"></span><div><br></div><div><br></div><div>Regards, <br>_____________= _____________________________________<br><strong><span data-mce-style=3D"co= lor: #3366ff;" style=3D"color: rgb(51, 102, 255);">Aharon Canan</span></str= ong><br><span style=3D"color: rgb(51, 102, 255); font-size: small;">int pho= ne - 8272036</span><br><span style=3D"color: rgb(51, 102, 255); font-size: = small;">ext phone - +97297692036</span><br><span style=3D"color: rgb(51, 10= 2, 255); font-size: small;">email - acanan@redhat.com</span><br></div><span= name=3D"x"></span><br></div><hr id=3D"zwchr"><blockquote style=3D"border-l= eft:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weig= ht:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Aria= l,sans-serif;font-size:12pt;"><b>From: </b>"Marcin Fabia=C5=84czyk" <mar= cin.fabianczyk@enicom.pl><br><b>To: </b>users@ovirt.org<br><b>Sent: </b>= Friday, May 1, 2015 1:48:54 PM<br><b>Subject: </b>[ovirt-users] Local Stora= ge<br><div><br></div><div style=3D"font-family: arial, helvetica, sans-seri= f; font-size: 12pt; color: #000000"><div>Hello<br></div><div><br></div><div= pan> <span class=3D"hps">ovirt</span><span class=3D"atn">-</span><span clas= s=3D"">hypervisior</span><span class=3D"">?</span></span></div><div><span c= lass=3D"" lang=3D"en"><span class=3D""><br></span></span></div><div><span c= lass=3D"" lang=3D"en"><span class=3D"">Regards.<br></span></span></div><div=
<span class=3D"" lang=3D"en"><span class=3D"">MF<br></span></span></div><d= iv> <br></div></div><br>______________________________________________= _<br>Users mailing list<br>Users@ovirt.org<br>http://lists.ovirt.org/mailma= n/listinfo/users<br></blockquote><div><br></div></div></body></html> ------=_Part_11975926_999004072.1430643221102--
It is true that you cannot mix local and shared storage types. However, it is actually possible tricking local storage to be presented as a shared iscsi volume and then passed to ovirt There are drawbacks but we are actively using this solution. Cheers AG *From:* users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] *On Behalf Of *Aharon Canan *Sent:* Sunday, May 03, 2015 10:54 AM *To:* Marcin Fabiańczyk *Cc:* users@ovirt.org *Subject:* Re: [ovirt-users] Local Storage you can't Host is part of cluster which is part of DC. DC can be shared or local only, can't be both. Regards, __________________________________________________ *Aharon Canan* int phone - 8272036 ext phone - +97297692036 email - acanan@redhat.com ------------------------------ *From: *"Marcin Fabiańczyk" <marcin.fabianczyk@enicom.pl> *To: *users@ovirt.org *Sent: *Friday, May 1, 2015 1:48:54 PM *Subject: *[ovirt-users] Local Storage Hello I have create DC with a shared storage but I would like also add my servers local resources. It is possible in ovirt-hypervisior? Regards. MF _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On 5/7/2015 12:11 PM, Andrea Ghelardi wrote:
It is true that you cannot mix local and shared storage types.
However, it is actually possible tricking local storage to be presented as a shared iscsi volume and then passed to ovirt
There are drawbacks but we are actively using this solution.
Cheers
AG
Hello, The major point that needs to be stressed again and again on this mailing list is: At this time, it is best practice to _NEVER_ combine the shared storage onto the cluster hosts. There are MANY many MANY posts from people with down oVirt environments because they combined their shared storage on their hosted cluster (especially gluster storage). They do not fully understand the horrible consequences that will happen when 1) a host cluster node gets fenced, 2) their gluster cluster becomes split-brained because they failed to understand gluster and quorums, or 3) a network connectivity issue of some sort breaks the storage cluster on one (or many) node(s) and then the issue cascades to the other systems bringing the entire shared storage + clustered hosts to a grinding halt. As a consequence, this mailing list gets flooded with pleas for help from a crashed oVirt setup that did not follow best practices. In my opinion, those who combine shared-storage onto the host-nodes need to pull the plug on one of their hosts, and then work through the numerous issues that will result in their hyper-converged configuration. If the SysAdmin does not have that experience of working through all of the problems that result from hyper-converging shared storage on the host nodes, then they certainly need to avoid combing shared storage on the host nodes. Good Luck! --ScottW
Hi Scott, Thank you for your reply. I indeed scratched my face on the wall due to this approach. However, we are taking care not to mix iscsi shared and local shared LUNs on the same datastore. I understand this is unsupported and discouraged as well but not so tragic? Cheers AG -----Original Message----- From: users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of Scott Worthington Sent: Thursday, May 07, 2015 8:20 PM To: users@ovirt.org Subject: Re: [ovirt-users] Local Storage On 5/7/2015 12:11 PM, Andrea Ghelardi wrote:
It is true that you cannot mix local and shared storage types.
However, it is actually possible tricking local storage to be presented as a shared iscsi volume and then passed to ovirt
There are drawbacks but we are actively using this solution.
Cheers
AG
Hello, The major point that needs to be stressed again and again on this mailing list is: At this time, it is best practice to _NEVER_ combine the shared storage onto the cluster hosts. There are MANY many MANY posts from people with down oVirt environments because they combined their shared storage on their hosted cluster (especially gluster storage). They do not fully understand the horrible consequences that will happen when 1) a host cluster node gets fenced, 2) their gluster cluster becomes split-brained because they failed to understand gluster and quorums, or 3) a network connectivity issue of some sort breaks the storage cluster on one (or many) node(s) and then the issue cascades to the other systems bringing the entire shared storage + clustered hosts to a grinding halt. As a consequence, this mailing list gets flooded with pleas for help from a crashed oVirt setup that did not follow best practices. In my opinion, those who combine shared-storage onto the host-nodes need to pull the plug on one of their hosts, and then work through the numerous issues that will result in their hyper-converged configuration. If the SysAdmin does not have that experience of working through all of the problems that result from hyper-converging shared storage on the host nodes, then they certainly need to avoid combing shared storage on the host nodes. Good Luck! --ScottW _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
participants (4)
-
Aharon Canan -
Andrea Ghelardi -
Marcin Fabiańczyk -
Scott Worthington