This is a multi-part message in MIME format. ------------MIME-1975911516-1580342552-delim Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable On 05/21/2015 02=3A47 AM=2C Chris Jones - BookIt=2Ecom Systems Administrato= r wrote=3A =3E=3E Another issue may be that the setting for COMPELNT/Compellent Vol ar= e =3E=3E wrong=3B =3E=3E the setting we ship is missing lot of settings that exists in the =3E=3E builtin =3E=3E setting=2C and this may have bad effect=2E If your devices match thi= s =2C I =3E=3E would =3E=3E try this multipath configuration=2C instead of the one vdsm configur= es=2E =3E=3E =3E=3E device =7B =3E=3E vendor =22COMPELNT=22 =3E=3E product =22Compellent Vol=22 =3E=3E path=5Fgrouping=5Fpolicy =22multibus=22 =3E=3E path=5Fchecker =22tur=22 =3E=3E features =220=22 =3E=3E hardware=5Fhandler =220=22 =3E=3E prio =22const=22 =3E=3E failback =22immediate=22 =3E=3E rr=5Fweight =22uniform=22 =3E=3E no=5Fpath=5Fretry fail =3E=3E =7D =3E =3E I wish I could=2E We=27re using the CentOS 7 ovirt-node-iso=2E The =3E multipath=2Econf is less than ideal but when I tried updating it=2C oVi= rt =3E instantly overwrites it=2E To be clear=2C yes I know changes do not =3E survive reboots and yes I know about persist=2C but it changes it while= =3E running=2E Live! Persist won=27t help there=2E =3E =3E I also tried building a CentOS 7 =22thick client=22 where I set up Cent= OS =3E 7 first=2C added the oVirt repo=2C then let the engine provision it=2E= Same =3E problem with multipath=2Econf being overwritten with the default oVirt= =3E setup=2E =3E =3E So I tried to be slick about it=2E I made the multipath=2Econf immutabl= e=2E =3E That prevented the engine from being able to activate the node=2E It =3E would fail on a vds command that gets the nodes capabilities and part= =3E of what it does is reads then overwrites multipath=2Econf=2E =3E =3E How do I safely update multipath=2Econf=3F =3E Somehow the multipath=2Econf that oVirt generates forces my HDD RAID controller disks to change from /dev/sdb* and /dev/sdc*=2E So I had to blacklist these=2E I was able to persist it by adding =22=23 RHEV PRIVATE=22 right below the= =22=23 RHEV REVISION 1=2E1=22 Hope this helps Met vriendelijke groet=2C With kind regards=2C Jorick Astrego Netbulae Virtualization Experts=20 ---------------- =09Tel=3A 053 20 30 270 =09info=40netbulae=2Eeu =09Staalsteden 4-3A =09KvK= 08198180 =09Fax=3A 053 20 30 271 =09www=2Enetbulae=2Eeu =097547 TA Enschede =09BTW= NL821234584B01 ---------------- ------------MIME-1975911516-1580342552-delim Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =3Chtml=3E =3Cbody=3E <br> <br> On 05/21/2015 02:47 AM, Chris Jones - BookIt.com Systems Administrator = <br> wrote: <br> <font color=3D"#000000">>> Another issue may be that the setting for = COMPELNT/Compellent Vol are </font><br> <font color=3D"#000000">>> wrong; </font><br> <font color=3D"#000000">>> the setting we ship is missing lot of sett= ings that exists in the </font><br> <font color=3D"#000000">>> builtin </font><br> <font color=3D"#000000">>> setting, and this may have bad effect. If = your devices match this , I </font><br> <font color=3D"#000000">>> would </font><br> <font color=3D"#000000">>> try this multipath configuration, instead = of the one vdsm configures. </font><br> <font color=3D"#000000">>> </font><br> <font color=3D"#000000">>> device { </fon= t><br> <font color=3D"#000000">>> &= nbsp; vendor "COMPELNT" </font><br> <font color=3D"#000000">>> &= nbsp; product "Compellent Vol" </font><br> <font color=3D"#000000">>> &= nbsp; path_grouping_policy "multibus" </font><br> <font color=3D"#000000">>> &= nbsp; path_checker "tur" </font><br> <font color=3D"#000000">>> &= nbsp; features "0" </font><br> <font color=3D"#000000">>> &= nbsp; hardware_handler "0" </font><br> <font color=3D"#000000">>> &= nbsp; prio "const" </font><br> <font color=3D"#000000">>> &= nbsp; failback "immediate" </font><br> <font color=3D"#000000">>> &= nbsp; rr_weight "uniform" </font><br> <font color=3D"#000000">>> &= nbsp; no_path_retry fail </font><br> <font color=3D"#000000">>> } </font><br> <font color=3D"#000000">> </font><br> <font color=3D"#000000">> I wish I could. We're using the CentOS 7 ovirt= -node-iso. The </font><br> <font color=3D"#000000">> multipath.conf is less than ideal but when I t= ried updating it, oVirt </font><br> <font color=3D"#000000">> instantly overwrites it. To be clear, yes I kn= ow changes do not </font><br> <font color=3D"#000000">> survive reboots and yes I know about persist, = but it changes it while </font><br> <font color=3D"#000000">> running. Live! Persist won't help there. <= /font><br> <font color=3D"#000000">> </font><br> <font color=3D"#000000">> I also tried building a CentOS 7 "thick c= lient" where I set up CentOS </font><br> <font color=3D"#000000">> 7 first, added the oVirt repo, then let the en= gine provision it. Same </font><br> <font color=3D"#000000">> problem with multipath.conf being overwritten = with the default oVirt </font><br> <font color=3D"#000000">> setup. </font><br> <font color=3D"#000000">> </font><br> <font color=3D"#000000">> So I tried to be slick about it. I made the mu= ltipath.conf immutable. </font><br> <font color=3D"#000000">> That prevented the engine from being able to a= ctivate the node. It </font><br> <font color=3D"#000000">> would fail on a vds command that gets the node= s capabilities and part </font><br> <font color=3D"#000000">> of what it does is reads then overwrites multi= path.conf. </font><br> <font color=3D"#000000">> </font><br> <font color=3D"#000000">> How do I safely update multipath.conf? </f= ont><br> <font color=3D"#000000">> </font><br> <br> Somehow the multipath.conf that oVirt generates forces my HDD RAID <br> controller disks to change from /dev/sdb* and /dev/sdc*. So I had to <b= r> blacklist these. <br> <br> I was able to persist it by adding "# RHEV PRIVATE" right below t= he "# <br> RHEV REVISION 1.1" <br> <br> Hope this helps <br> <br> <br> <br> = =3CBR /=3E =3CBR /=3E =3Cb style=3D=22color=3A=23604c78=22=3E=3C/b=3E=3Cbr=3E=3Cspan style=3D=22c= olor=3A=23604c78=3B=22=3E=3Cfont color=3D=22000000=22=3E=3Cspan style=3D=22= mso-fareast-language=3Aen-gb=3B=22 lang=3D=22NL=22=3EMet vriendelijke groet= =2C With kind regards=2C=3Cbr=3E=3Cbr=3E=3C/span=3EJorick Astrego=3C/font= =3E=3C/span=3E=3Cb style=3D=22color=3A=23604c78=22=3E=3Cbr=3E=3Cbr=3ENetbul= ae Virtualization Experts =3C/b=3E=3Cbr=3E=3Chr style=3D=22border=3Anone=3B= border-top=3A1px solid =23ccc=3B=22=3E=3Ctable style=3D=22width=3A 522px=22= =3E=3Ctbody=3E=3Ctr=3E=3Ctd style=3D=22width=3A 130px=3Bfont-size=3A 10px= =22=3ETel=3A 053 20 30 270=3C/td=3E =3Ctd style=3D=22width=3A 130px=3Bf= ont-size=3A 10px=22=3Einfo=40netbulae=2Eeu=3C/td=3E =3Ctd style=3D=22wid= th=3A 130px=3Bfont-size=3A 10px=22=3EStaalsteden 4-3A=3C/td=3E =3Ctd sty= le=3D=22width=3A 130px=3Bfont-size=3A 10px=22=3EKvK 08198180=3C/td=3E=3C/tr= =3E=3Ctr=3E =3Ctd style=3D=22width=3A 130px=3Bfont-size=3A 10px=22=3EFax= =3A 053 20 30 271=3C/td=3E =3Ctd style=3D=22width=3A 130px=3Bfont-size= =3A 10px=22=3Ewww=2Enetbulae=2Eeu=3C/td=3E =3Ctd style=3D=22width=3A 130= px=3Bfont-size=3A 10px=22=3E7547 TA Enschede=3C/td=3E =3Ctd style=3D=22w= idth=3A 130px=3Bfont-size=3A 10px=22=3EBTW NL821234584B01=3C/td=3E=3C/tr=3E= =3C/tbody=3E=3C/table=3E=3Cbr=3E=3Chr style=3D=22border=3Anone=3Bborder-top= =3A1px solid =23ccc=3B=22=3E=3CBR /=3E =3C/body=3E =3C/html=3E ------------MIME-1975911516-1580342552-delim--