RE: External array showing as /dev/sda
Hi David, We used to have similar problem in our R710 when the 6x750G RAID5 array exceeded the 2T boundary. We used an usbstick(2G) as the /boot partition and put grub on that to boot the Centos. Then anaconda won't complain the huge GPT partition anymore. The usbstick can be plugged into the internal usb socket in the chassis, saving the trouble mishandled accidentally. Even the stability of an usbstick is usually not as good as a hard disk, you can always save a backup one, it's so cheap nowadays after all. Regards, Frank Wang On Mon, March 22, 2010 4:59 am, David Hubbard wrote: From: Behalf Of J. Epperson I'm somehow missing how getting the non-installable smaller GPT VD to be /dev/sda will change that scenario. The other responder echoed one of my initial thoughts when he suggested turning off the external array. That should do it. If I could get the internal raid controller to be /dev/sda, then the RHEL/centos installer will not care about the fact that the external array is too big and would require GPT to boot off of, then the installer would let me proceed. It was only an issue with it being /dev/sda since that made the installer think there was no way to writen an MBR and boot off of it. But, unplugging external did lead me the right direcation. What I've had to do is this: 1) Internal array I had desired to be single RAID 50 across 8 drives. Thanks to Dell's choice of LSI for their current raid controllers and LSI missing the feature that most others seem to have in being able to present parts of one array as multiple logical drives, I ended up having to waste the first two drives to make a RAID 1 mirror smaller than 2 TB and then only six remaining drives in the RAID 50. 2) Unplugged the external array and installed centos using normal non-GPT boot to the raid 1 virtual drive. It installed to /dev/sda. 3) After install, edit /boot/grub/device.map and changed it to show: (hd0) /dev/sdb Then: grub grub device (hd0) /dev/sda device (hd0) /dev/sda grub root (hd0,0) root (hd0,0) Filesystem type is ext2fs, partition type 0x83 grub setup (hd0) setup (hd0) Checking if /boot/grub/stage1 exists... no Checking if /grub/stage1 exists... yes Checking if /grub/stage2 exists... yes Checking if /grub/e2fs_stage1_5 exists... yes Running embed /grub/e2fs_stage1_5 (hd0)... 15 sectors are embedded. succeeded Running install /grub/stage1 (hd0) (hd0)1+15 p (hd0,0)/grub/stage2 /grub/grub.conf... succeeded Done. 4) Reboot, connect external array while server is rebooting, comes back up and boots off of internal array from bios, grub is happy because now it is set up for /dev/sdb. Only downside to this situation is if something were to fail and take the external array down the server won't boot since internal will go back to being /dev/sda. But if the external array is down then we've got issues anyway. :-) Thanks, David ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: omreport storage: are all possible output values documented?
On Mon, Mar 22, 2010 at 06:20, mohan_g_mur...@dell.com wrote: e.g., to find the possible states and properties of an Virtual Disk you can find under the Virtual Disk Properties section (http://support.dell.com/support/edocs/software/svradmin/6.2/en/OMSS/vdm gmt.htm#wp1424964 )of the user guide. Unfortunately this is more geared towards the GUI front-end. For instance, for the status the table says Warning/non-critical, but I think in the omreport output I might see either Warning or non-critical but not Warning/non-critical, right? I downloaded the script Ben pointed to, and that contains a reference of possible values. The problem now is that I tested OMSA 5.5.0, 6.1.0, 6.2.0 and the position of the columns using -fmt ssv keeps changing, the names of the columns do the same (ie: Type - Bus Protocol); ideally this could be documented too, but this I can easily test by running omreport once for every OMSA version and checking the differences. Thanks -- giul...@pobox.com ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: External array showing as /dev/sda
On Mon, March 22, 2010 00:22, Matt Domsch wrote: On Sat, Mar 20, 2010 at 03:17:52PM -0400, David Hubbard wrote: Got a PowerEdge T510 with internal raid plus an H800 controller hooked to an MD1200 external array. Trying to install centos; raid controllers are bus 2 device 0 internal bus 7 device 0 external During setup its identifying /dev/sda as external storage which I don't want. Is there anything I can tweak to make it detect the storage in an order that results in the internal being /dev/sda? Aside from the great suggestions in this thread already (install with the external enclosure disconnected, make sure BIOS boot order is set to use the internal disk first, set up your initrd to load drivers for the internal disk controller first), there's yet another trick which Dell included in Anaconda exactly to handle this... http://linux.dell.com/installermagic.shtml The interesting part is this kickstart directive: part /boot --fstype ext3 --size=1844 --onbiosdisk=80 --asprimary where 80 is the (hex) value for the first int13 disk. And of course you set the int13 disk order in BIOS SETUP (or using DTK). The magic bit is that you really want to use parted or fdisk to first create an empty partition table on every (logical) disk in the system. You don't want to just write zeros to the MBR of every disk. parted and fdisk know how to fill in a unique signature in the appropriate MBR field, which anaconda uses to recognize and pair up the BIOS list of disks with the Linux list of disks. And the Oscar for Best Performance in a Contentious Thread goes to ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
MD3000
Hello, I didn't see a specific email list for the MD3000 DAS with Linux (or the MD3000 in general); is this a good place to ask questions about it? Thanks, -Stephen ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: swapping RAID1 disk and hot-swap disk for restore image test
On Fri, Mar 19, 2010 at 5:37 PM, patrick_fisc...@dell.com wrote: No trouble. Best is to power down the system - remove the raid 1 disks at least that the disk have no connection to the backplane. Test what you want to test- with the single disk as raid 0. After that delete the raid 0 reinsert the disks = import the foreign config and it will work as before IF you are work remote only, I would set the raid 1 disks to offline = if you reenable it, set only one disk online and set the 2nd in a rebuild state. (this you can do after the os has started to see if all is fine and the 2nd mirrored disk can be used separately in worst case scenarios..) Thank you for the instructions, after several messages in this thread the various options are becoming clearer. Yes, we will do the work remotely this time. Feedback on how this worked later in the week! Regards, Gernot Hassenpflug ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
R710 w/ Mixed SSD + SAS Drives
Does anyone have an R710 with a mixture of SAS + SSD drives? I'm trying to build one using a pair of SAS drives for the OS/applications and 4 SSDs for an Oracle database. The R710 documentation (http://www.dell.com/downloads/global/products/pedge/en/server-poweredge -r710-tech-guidebook.pdf - Pages 37-39) seems to say that this is supported, but I can't get the online configuration tool to let me do it. My inside sales person is also unable to get it built. Is it supported to simply buy it with the SAS drives factory installed and buy the SSDs separately to install myself once it gets here? -- Thank You Jefferson Cowart Network and Systems Administrator Claremont University Consortium ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: swapping RAID1 disk and hot-swap disk for restore image test
Hello all, I have some worries about the time for rebuilding RAID1 on 300GiB 15000rpm SAS drives from the PERC6 controller. I did not find specific information on Google searches, but times of 4 hours to approximately 48 hours appear in searches. I see the PERC6 has a maximum transfer of 300MB/s, but I am not sure how much will be available for the rebuild, nor what the limitation of the disks is. I intend to do the rebuild from the BIOS (OS shut off). What kind of rebuild speeds can I envisage? We have about 12 hours (till next morning) in which to do the rebuild provided it can complete successfully, but if possible want to complete it in 1-2 hours (evening). Best regards, Gernot Hassenpflug ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: R710 w/ Mixed SSD + SAS Drives
Which internal controller do you have? H700, PERC 6/i, H200 or SAS 6/iR On Mon, Mar 22, 2010 at 07:45:39PM -0700, Jefferson Cowart wrote: Does anyone have an R710 with a mixture of SAS + SSD drives? I'm trying to build one using a pair of SAS drives for the OS/applications and 4 SSDs for an Oracle database. The R710 documentation (http://www.dell.com/downloads/global/products/pedge/en/server-poweredge -r710-tech-guidebook.pdf - Pages 37-39) seems to say that this is supported, but I can't get the online configuration tool to let me do it. My inside sales person is also unable to get it built. Is it supported to simply buy it with the SAS drives factory installed and buy the SSDs separately to install myself once it gets here? -- Thank You Jefferson Cowart Network and Systems Administrator Claremont University Consortium ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
RE: R710 w/ Mixed SSD + SAS Drives
My existing R710s have PERC 6/i controllers. However, this is for a new server so I can go with whatever controller makes this work. -- Thank You Jefferson Cowart Network and Systems Administrator Claremont University Consortium -Original Message- From: Jeff Ewing [mailto:jew...@aconex.com] Sent: Monday, March 22, 2010 20:43 To: Jefferson Cowart Cc: linux-powere...@lists.us.dell.com Subject: Re: R710 w/ Mixed SSD + SAS Drives Which internal controller do you have? H700, PERC 6/i, H200 or SAS 6/iR On Mon, Mar 22, 2010 at 07:45:39PM -0700, Jefferson Cowart wrote: Does anyone have an R710 with a mixture of SAS + SSD drives? I'm trying to build one using a pair of SAS drives for the OS/applications and 4 SSDs for an Oracle database. The R710 documentation (http://www.dell.com/downloads/global/products/pedge/en/server- poweredge -r710-tech-guidebook.pdf - Pages 37-39) seems to say that this is supported, but I can't get the online configuration tool to let me do it. My inside sales person is also unable to get it built. Is it supported to simply buy it with the SAS drives factory installed and buy the SSDs separately to install myself once it gets here? -- Thank You Jefferson Cowart Network and Systems Administrator Claremont University Consortium ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
