Hi there. 1) I''m just trying now to install the XCP on Supermicro A+ platform. AMD chipset, SP5100 south bridge, embedded Adaptec RAID (vRAID). The matter is: should i keep trying to install the XCP on the RAID, or just to install it on SATA disk without RAID instead? I am new in *nix. As I''ve read in DDK, the way of putting driver into the XCP looks like this: domU -> building smth there -> then adding that to dom0. But how ever can I do it with a RAID driver? And btw - do I really need XCP-over-RAID or 2) There are drivers themselves from Adaptec RHEL3-4-5-6 and SLES9-10-11. Which to take? Thanks, Ilya _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Jul 7, 2011 at 10:12 AM, <alkorrus@front.ru> wrote:> Hi there. > > > > 1) I''m just trying now to install the XCP on Supermicro A+ platform. AMD > chipset, SP5100 south bridge, embedded Adaptec RAID (vRAID). The matter is: > should i keep trying to install the XCP on the RAID, or just to install it > on SATA disk without RAID instead? > > I am new in *nix. As I''ve read in DDK, the way of putting driver into the > XCP looks like this: domU -> building smth there -> then adding that to > dom0. But how ever can I do it with a RAID driver? > > And btw - do I really need XCP-over-RAID or > > > > 2) There are drivers themselves from Adaptec RHEL3-4-5-6 and SLES9-10-11. > Which to take? > > > > Thanks, > > > > Ilya > > _______________________________________________It''s always better to have RAID, especially if you run XEN since it will help with IO load. I would simply disable the RAID setup in the BIOS and then configure a mdraid in Linux. By the sounds of it you have what''s called "fakeraid" and will probably have more trouble trying to get Linux to see the drives, than trying to figure out how to setup software RAID on Linux :) Just google "setup software RAID on CentOS", or "setup software raid on Debian" or whichever Linux you plan on using -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thanks, Rudi. I feel the same - in both cases the CPU works - one of them :)) And it doesn''t matter - I have a plenty! So I ''m beginning it on just SATA. Ilya. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Jul 7, 2011 at 10:33 AM, <alkorrus@front.ru> wrote:> > Thanks, Rudi. > > I feel the same - in both cases the CPU works - one of them :)) And it > doesn''t matter - I have a plenty! > > So I ''m beginning it on just SATA. > > Ilya. > > _______________________________________________Chances are you''ll save a bit of IO overhead, due to the RAID calculation on the CPU thought the fakeraid card in anycase :) -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Rudi Ahlers wrote:>I would simply disable the RAID setup in the BIOS and then configure a >mdraid in Linux. By the sounds of it you have what''s called "fakeraid" >and will probably have more trouble trying to get Linux to see the >drives, than trying to figure out how to setup software RAID on Linux >:)That''s my thinking as well. As it happens I''ve just been updating/upgrading some of my boxes. One new (to me box doesn''t have raid so that forced me to use Linux software raid. The next one I did is Dell box with built in hardware raid - but I''ve disabled that and gone software raid again because it gives me more flexibility and visibility. Only one of the three Dell boxes I have has any Linux support for the raid controller AFAICT. I''d tended to steer clear of software raid because of the problems booting from an array before you''ve loaded the software needed to access it. Then I came across this neat trick ... You can setup a small boot volume as raid 0 (mirrored) - you can add all your drives. The trick is to run "grub-install /dev/sdx" for each drive. This means that every drive in the array has a copy of the boot loader (GRUB) and the required files (initrd, vmlinuz, etc). In other words, the system can be booted from any single drive - and the initrd has the software needed to then access everything else. Obviously, booting off only one drive probably doesn''t make sense for many array configurations. Now I''m a convert. The last box I upgraded had new (larger) drives. It was really handy to be able to configure the raid with a drive missing since the supplier shipped one less than ordered. Then when the missing drive arrived I just added it, told mdadm to add it to the arrays, and let it build the data on it. But in relation to the query. Once you have supported raid volumes, then what you run on top of it doesn''t really matter. Ie, as far as XCP (or any other software) is concerned, it shouldn''t matter if a disk partition is on a hardware raid, software raid, single disk, ... -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I have installed on my system bl 380 Gb xen 4.0.1 Someone can tell me how to configure TMEM to make the memory over-commit xm command has this options tmem-list List tmem pools. tmem-thaw Thaw tmem pools. tmem-freeze Freeze tmem pools. tmem-destroy Destroy tmem pools. tmem-set Change tmem settings. tmem-shared-auth De/authenticate shared tmem pool but i do not know how to use these commands to create a pool TMEM and how to change the guest operating systems VM to use that TMEM pool Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, the first step is to pass "tmem" as boot argument.> but i do not know how to use these commands to create a pool TMEM and > how to change the guest operating systems VM to use that TMEM poolthen you need to check your guest kernel is prepped for tmem (or rather, build one with tmem) Florian -- the purpose of libvirt is to provide an abstraction layer hiding all xen features added since 2006 until they were finally understood and copied by the kvm devs. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi. I''m using HW RAID too (but LSI 3ware 9750) and want to install XCP 1.0 on it. I think it will be much faster than mdraid. Can I integrate driver to the distro somehow? 07.07.2011 13:20, Simon Hobson:> Rudi Ahlers wrote: > >> I would simply disable the RAID setup in the BIOS and then configure a >> mdraid in Linux. By the sounds of it you have what''s called "fakeraid" >> and will probably have more trouble trying to get Linux to see the >> drives, than trying to figure out how to setup software RAID on Linux >> :) > > That''s my thinking as well. As it happens I''ve just been > updating/upgrading some of my boxes. One new (to me box doesn''t have > raid so that forced me to use Linux software raid. The next one I did > is Dell box with built in hardware raid - but I''ve disabled that and > gone software raid again because it gives me more flexibility and > visibility. Only one of the three Dell boxes I have has any Linux > support for the raid controller AFAICT. > > I''d tended to steer clear of software raid because of the problems > booting from an array before you''ve loaded the software needed to > access it. Then I came across this neat trick ... > > You can setup a small boot volume as raid 0 (mirrored) - you can add > all your drives. The trick is to run "grub-install /dev/sdx" for each > drive. This means that every drive in the array has a copy of the boot > loader (GRUB) and the required files (initrd, vmlinuz, etc). In other > words, the system can be booted from any single drive - and the initrd > has the software needed to then access everything else. > Obviously, booting off only one drive probably doesn''t make sense for > many array configurations. > > Now I''m a convert. The last box I upgraded had new (larger) drives. It > was really handy to be able to configure the raid with a drive missing > since the supplier shipped one less than ordered. Then when the > missing drive arrived I just added it, told mdadm to add it to the > arrays, and let it build the data on it. > > > But in relation to the query. Once you have supported raid volumes, > then what you run on top of it doesn''t really matter. Ie, as far as > XCP (or any other software) is concerned, it shouldn''t matter if a > disk partition is on a hardware raid, software raid, single disk, ... >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi again. I''ve found this manual: http://www.xen.org/files/XenCloud/ddk.pdf But I can''t find DDK iso. XCP DDK does not exist yet, right? 08.07.2011 11:53, Stanislav Datskevich:> Hi. I''m using HW RAID too (but LSI 3ware 9750) and want to install XCP > 1.0 on it. I think it will be much faster than mdraid. > Can I integrate driver to the distro somehow? > > 07.07.2011 13:20, Simon Hobson: >> Rudi Ahlers wrote: >> >>> I would simply disable the RAID setup in the BIOS and then configure a >>> mdraid in Linux. By the sounds of it you have what''s called "fakeraid" >>> and will probably have more trouble trying to get Linux to see the >>> drives, than trying to figure out how to setup software RAID on Linux >>> :) >> >> That''s my thinking as well. As it happens I''ve just been >> updating/upgrading some of my boxes. One new (to me box doesn''t have >> raid so that forced me to use Linux software raid. The next one I did >> is Dell box with built in hardware raid - but I''ve disabled that and >> gone software raid again because it gives me more flexibility and >> visibility. Only one of the three Dell boxes I have has any Linux >> support for the raid controller AFAICT. >> >> I''d tended to steer clear of software raid because of the problems >> booting from an array before you''ve loaded the software needed to >> access it. Then I came across this neat trick ... >> >> You can setup a small boot volume as raid 0 (mirrored) - you can add >> all your drives. The trick is to run "grub-install /dev/sdx" for each >> drive. This means that every drive in the array has a copy of the >> boot loader (GRUB) and the required files (initrd, vmlinuz, etc). In >> other words, the system can be booted from any single drive - and the >> initrd has the software needed to then access everything else. >> Obviously, booting off only one drive probably doesn''t make sense for >> many array configurations. >> >> Now I''m a convert. The last box I upgraded had new (larger) drives. >> It was really handy to be able to configure the raid with a drive >> missing since the supplier shipped one less than ordered. Then when >> the missing drive arrived I just added it, told mdadm to add it to >> the arrays, and let it build the data on it. >> >> >> But in relation to the query. Once you have supported raid volumes, >> then what you run on top of it doesn''t really matter. Ie, as far as >> XCP (or any other software) is concerned, it shouldn''t matter if a >> disk partition is on a hardware raid, software raid, single disk, ... >> > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- My ICQ: 6693942 My Jabber: phantasm@jabber.ru Cellphone: +380936871900 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users