Hi, I just received a new server (HP DL180G5) with 12x 1TB HDs and I bumped into fdisks 2TB limits... Since this is an entry level server, I can't use the classic HP bootable utilities to create smaller volumes et can only create a big RAID6. I found out that: using parted, labelling it gpt and creating the partitions would do the trick. But, what about grub? I read that it does not support gpt... Or is there another way to do it? By example, do you think I could boot on a live CentOS, install HP RAID tools on it (is it possible?) and then create volumes...? Thx, JD
I have this problem, I just boot from usb sticks? A 512MB usb pen drive is (just about extinct!) only about ?2.00 so get three, make one an ms-dos disk with parted and format it ready. Then pop-in CentOS and install it mounting the usb pen as /boot so grub boots from that msdos partition and then use dd to copy the usb pendrive to two more to have them knocking around (take one home and put it in your sock draw or something) and just keep the image for the pen drive somewhere like with your work files? 2009/1/27 John Doe <jdmls at yahoo.com>:> Hi, > > I just received a new server (HP DL180G5) with 12x 1TB HDs and I bumped into fdisks 2TB limits... > Since this is an entry level server, I can't use the classic HP bootable utilities to create smaller volumes et can only create a big RAID6. > I found out that: using parted, labelling it gpt and creating the partitions would do the trick. > But, what about grub? I read that it does not support gpt... > Or is there another way to do it? > By example, do you think I could boot on a live CentOS, install HP RAID tools on it (is it possible?) and then create volumes...? > > Thx, > JD > > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >-- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GIT/MU/U dpu s: a--> C++>$ U+> L++> B-> P+> E?> W+++>$ N K W++ O M++>$ V- PS+++ PE++ Y+ PGP t 5 X+ R- tv+ b+> DI D+++ G+ e(+++++) h--(++) r++ z++ ------END GEEK CODE BLOCK------
John Doe wrote:> I just received a new server (HP DL180G5) with 12x 1TB HDs and I bumped into fdisks 2TB limits...I would create two raid logical volumes, one for centos (say, 20GB to 100GB) and one with the rest of the space. Install centos and normal MBR on /dev/sda and then use lvm on the /dev/sdb directly with no partition table needed. I would also strongly consider having two disks mirrored for the system in one lvm vg and the rest in another, but with 1TB disks it is kind of wasted space. Tho with 12 disks you can have 2 disks for RAID1, then 8+P+1 in RAID5. -- //Morten Torstensen //Email: morten at mortent.org //IM: morten.torstensen at gmail.com I can't listen to that much Wagner. I start getting the urge to conquer Poland. -- Woody Allen
On Tuesday 27 January 2009, John Doe wrote:> Hi, > > I just received a new server (HP DL180G5) with 12x 1TB HDs and I bumped > into fdisks 2TB limits... Since this is an entry level server, I can't use > the classic HP bootable utilities to create smaller volumes et can only > create a big RAID6.If it does raid6 then you have a p400 or p800 controller, right? If so then hpacucli or similar can easily give you a small logical drive for the OS and then a large one for data. On the small one partition normally and install grub. On the big one do one of: 1) partition with parted and gpt 2) use lvm and put a pv directly on the cciss device 3) put the filesystem directly on the cciss device Also since you have that hardware. Make sure your controller firmware is at 5.22, drives at HPG6 and backplane at 2.00 Cheers, Peter> I found out that: using parted, labelling it gpt and > creating the partitions would do the trick. But, what about grub? I read > that it does not support gpt... > Or is there another way to do it? > By example, do you think I could boot on a live CentOS, install HP RAID > tools on it (is it possible?) and then create volumes...? > > Thx, > JD-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. URL: <http://lists.centos.org/pipermail/centos/attachments/20090127/2c16e671/attachment-0003.sig>
On Tue, Jan 27, 2009 at 7:20 AM, John Doe <jdmls at yahoo.com> wrote:> Hi, > > I just received a new server (HP DL180G5) with 12x 1TB HDs and I bumped > into fdisks 2TB limits... > Since this is an entry level server, I can't use the classic HP bootable > utilities to create smaller volumes et can only create a big RAID6. > I found out that: using parted, labelling it gpt and creating the > partitions would do the trick. > But, what about grub? I read that it does not support gpt... > Or is there another way to do it? > By example, do you think I could boot on a live CentOS, install HP RAID > tools on it (is it possible?) and then create volumes...? > > Thx, > JDI came across this article you may find useful: http://www.unixgods.org/~tilo/linux_larger_2TB.html I should say that I STRONGLY recommend not creating ext3 file systems in the 2TB+ range - fsck takes too long and you'd hate to get hit by one of those in what is supposed to be a "quick" reboot...and disabling them on the file system isn't a good idea either. -- Jake Paulus JakePaulus at gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090127/766e4843/attachment-0003.html>
On Tue, 27 Jan 2009 at 6:43pm, Jake wrote> I should say that I STRONGLY recommend not creating ext3 file systems in the > 2TB+ range - fsck takes too long and you'd hate to get hit by one of those > in what is supposed to be a "quick" reboot...and disabling them on the file > system isn't a good idea either.On the other hand, nothing is as well supported on RHEL/CentOS as is ext3. So if you're data is really important to you, think hard about using another FS. -- Joshua Baker-LePain QB3 Shared Cluster Sysadmin UCSF
From: Peter Kjellstrom <cap at nsc.liu.se>> If it does raid6 then you have a p400 or p800 controller, right? If so then > hpacucli or similar can easily give you a small logical drive for the OS and > then a large one for data.Yes, that's the plan but, the thing is to be able to run the utilities... I need either to make a live CD with the HP tools installed, or a "temporary OS with the tools... First try will be to create a RAID6 on 3 disks (=1 TB, so no grub problems), install the OS, run HP ACU, extend the RAID to the 12 disks, and create the logical disks... If first try fails, second try would be to use a temporary USB disk to install a temporary OS. I even thought of Installing the P800 in a model 3xx, while leaving the disks in the DL180 (if cable length permits it), and boot with SmartStart on the 3xx... ^_^ As for the logical disks sizes, we would go with something like 5 disks of 1.9TB. So, just classic msdos partitions. One thing is for sure, HP tries really hard to make it complicated... JD