List Readers - I have a Dell server that uses the Perc 6i controller and had 5 1Tb disks installed (1 for OS and the other 4 in a Raid0 for a large storage pool). The owner of the server wanted me to swap out the 1Tb disks for 2Tb disks - easy enough I thought, but I ran into some issues trying to clone the OS disk to the new 2Tb disk, so I just did a re-install. So basically we now have 5 2Tb disks (1 for OS and the other 4 in a Raid0) like before. I was able to copy off the data that was on the original Raid0 volume and put it back on the newly created one that is now 8Tb and that worked well enough. But since I was unable to clone the original OS disk, and proceeded to simply re-install the OS, the owner apparently wants his $HOME directory copied off (which of course resides on the 1Tb OS disk). So, being a SAS disk, I purchased an ICY Dock which allows me to mount the SAS disk in an external enclosure, and plug it in via USB (SAS -> SATA -> USB). However when I do a 'fdisk -l /dev/sdc' I receive the following: [root at gc-server2 ~]# fdisk -l /dev/sdc Disk /dev/sdc: 2199.0 GB, 2199023255552 bytes 255 heads, 63 sectors/track, 267349 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdc doesn't contain a valid partition table Two things are a bit unusual here, first of all its not a 2Tb disk, and secondly why cant I read the partition table. Originally the OS was on an LVM volume and by default it was setup as /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 My question is, is there a way to connect and mount this via USB and be able to get the $HOME directory stuff off that I failed to copy off before removing the disk? Thanks in advance Michael ================================== P Please consider the environment before printing this e-mail Cleveland Clinic is ranked one of the top hospitals in America by U.S.News & World Report (2009). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100524/b0807ae1/attachment.html>
Weiner, Michael wrote, On 05/24/2010 10:28 AM:> List Readers - > > > > I have a Dell server that uses the Perc 6i controller and had 5 1Tb > disks installed (1 for OS and the other 4 in a Raid0 for a large storage > pool).> > > [root at gc-server2 ~]# fdisk -l /dev/sdc > > > > Disk /dev/sdc: 2199.0 GB, 2199023255552 bytes > > 255 heads, 63 sectors/track, 267349 cylinders > > Units = cylinders of 16065 * 512 = 8225280 bytes > > > > Disk /dev/sdc doesn't contain a valid partition table >Are you sure that the Perc was not presenting you with a logical disk (Volume)? One I received from dell, with RHEL on it, was setup with 8 disks in a raid5 and the controller was presenting the whole array as two drives, i.e., no physical drives are presented to the OS. BTW had your support contract ran out with Dell/RH?> > > Two things are a bit unusual here, first of all its not a 2Tb disk, and > secondly why cant I read the partition table. > > > > Originally the OS was on an LVM volume and by default it was setup as > > > > /dev/VolGroup00/LogVol00 / ext3 defaults > 1 1 >you might get lucky with a vgscan or lvmdiskscan, however my bet is on having to put all the drives back in a perc array.> > > My question is, is there a way to connect and mount this via USB and be > able to get the $HOME directory stuff off that I failed to copy off > before removing the disk? > > > > Thanks in advance > > Michael >-- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter
On Mon, May 24, 2010 at 10:28 AM, Weiner, Michael <weinerm at ccf.org> wrote:> List Readers ? > > I have a Dell server that uses the Perc 6i controller and had 5 1Tb disks > installed (1 for OS and the other 4 in a Raid0 for a large storage pool). > The owner of the server wanted me to swap out the 1Tb disks for 2Tb disks ? > easy enough I thought, but I ran into some issues trying to clone the OS > disk to the new 2Tb disk, so I just did a re-install. So basically we now > have 5 2Tb disks (1 for OS and the other 4 in a Raid0) like before. I was > able to copy off the data that was on the original Raid0 volume and put it > back on the newly created one that is now 8Tb and that worked well enough. > But since I was unable to clone the original OS disk, and proceeded to > simply re-install the OS, the owner apparently wants his $HOME directory > copied off (which of course resides on the 1Tb OS disk). So, being a SAS > disk, I purchased an ICY Dock which allows me to mount the SAS disk in an > external enclosure, and plug it in via USB (SAS -> SATA -> USB). However > when I do a ?fdisk ?l /dev/sdc? I receive the following: > > [root at gc-server2 ~]# fdisk -l /dev/sdc > > Disk /dev/sdc: 2199.0 GB, 2199023255552 bytes > 255 heads, 63 sectors/track, 267349 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Disk /dev/sdc doesn't contain a valid partition table > > Two things are a bit unusual here, first of all its not a 2Tb disk, and > secondly why cant I read the partition table. > > Originally the OS was on an LVM volume and by default it was setup as > > ?/dev/VolGroup00/LogVol00 /?????????????????????? ext3??? defaults??????? 1 > 1 > > My question is, is there a way to connect and mount this via USB and be able > to get the $HOME directory stuff off that I failed to copy off before > removing the disk? > > Thanks in advance > MichaelSince the disk was connected through a RAID controller it's most likely that the disk is formatted for the custom format that the RAID controller uses. The controller then presents that disk to the OS. You're going to have to put the drive back into the server so the PERC can see it, then you might be able to get to the LVMs. PS. You did something like this without making backups first? PPS. You might have a reason, but it would be irresponsible not to point out that by using RAID0 you now have an exponential risk of losing all of that data.