On 23.12.2011 01:28, Scott Zupek wrote:
On 12/22/11 7:33 AM, George Shuklin wrote:
Anyway, I can say one thing: don't do this. Any lowlevel manipulation
with 'fakeraid' and XCP will make you getting a nasty problems you
will need to fix by yourself (without community help).
If you playing with XCP - turn 'raid' to 'hba' (sata ahci) in bios
and use a single drive.
*At this point I am trying to install Debian on a software raid but I
can't get the darn thing to bootup. Raid has been turned off and all 4
SATA3 drives are set to ACHI mode. Grub is a nightmare and apparently
"mdm raid" software is the way to go. I have been trying to get this
to work for a few days now.*
If you wish to use XCP, no debian, sorry. XCP is shipped with very tight
tuned OS inside and shall works with it only. If you are talking about
xcp packages for ubuntu/debian - they are not ready for product environment.
If you wants to use this in product - think about proper hardware.
nForce is NOT A SERVER solution.
*
I completely understand the nForce is NOT a server solution, but in
all reality, this is 1 server hosting 3 or maybe 4 servers for my I.T.
consulting company. I don't need top of the line performance so I
don't need the 1000+ USD raid cards. nForce has yet to fail me and I
am not runnign a data center, so those speed differences are
negotiable. nForce is still a hardware solution, but moreso geared
towards high end users/workstations. Regardless I gave up on the
hardware raid as that system board didn't support AM3+. I understand
that I am between a home user and a business class/enterprise user.
That's why I am trying to get Xen Hypervisor and XCP to work correctly. :)
*
nForce raid is not an 'hardware solution'. Spit to the eyes to guy who
told you this. 'fake raid' is just changed PID/VID of device, to make it
not working with default AHCI driver. A specially crafted windows driver
recognize those PID/VID and do software raid, presenting to operating
system a 'raid' device. But actually all work happens inside driver. So
there is NO difference in performance of 'fake raid' and software raid
(I do actually think that software raid will be faster).
But XCP does not support software raids. So you need to wipe completely
content of drives and install XCP to clean system to the first disk (sda).
If you do really wants to use local disks as storage, and have
redundancy you can create two SR later create two same size VDI and join
them together as raid1 in guest machine. (but this is kinda... weird).
PS XCP supports up to 32 cores, so 8 core shall works fine.
*
That is actually great to know. Thank you. It sounds like I'll have
to get XCP to work with Xen Hypervisor running on top Debian (with
DOM0 kernel). Since it's not as easy as the XCP ISO/Hypervisor,
hopefully I can get it to a manageable state using XenCenter.
speaking of, is there a "better"/more unified management tool beyond
XenCenter? I don't want management to be complicated, I am just curious.
Thank you for the help/responses. This is all new techology(software
wise) to me and I love learning as I go. I apologize if I am filling
the mailing list with off topic material. Since it all goes back to
XCP-API I thought it might pertain.*
Main management system for XCP is 'xe' command line. You need to have
medium level of understanding XenAPI relations model to use it (see
documentation for XenServer).
And please, don't mix xen+xend (xen- packages in may distro) and XCP.
XCP use xen, but differ significantly from xapi (the core of XCP toolstack).
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