I've done 1. before and it works okay. Like you say, it's just a little scary modifying the partition table, but it works. I'd back up your data first though. -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Soeren Grunewald Sent: Wednesday, 11 May 2011 2:43 a.m. To: General Red Hat Linux discussion list Subject: [lvm] Howto resize LVM on GPT partition. Hi All, We had a RHEL5.6 server which was installed with default settings on a HW raid system. The raid was originally setup as raid1 with 2x2TB. Soon we run out of storage, so we migrate to raid5. Now we have ~4TB, but can't access the storage, because MBR supports only partitions up to 2TB. So I've converted the MBR to GPT and fixed grub to boot again. That was quite easy (following http://www.rodsbooks.com/gdisk/mbr2gpt.html). But now i need to resize the physical LVM partition. And this is something which makes me nervous. Normally i would use fdisk to delete part2 and recreate it. Using parted and resize command does not work because it is a LVM partition. and mkpart does not know LVM as partition type too. Finally i can use pvresize, but i have no idea if pvresize is working correctly with GPT partitions and/or partitions size > 2TB. In the end i have 2 options. 1) try pvresize and pray - the way it should be, but scary 2) create a new LVM partition and add it to the volume group. - uncool So has anyone here done something before or any other ideas/comments? Below some print outs which might be helpful. parted: Model: AMCC 9690SA-4I DISK (scsi) Disk /dev/sda: 4000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 32.3kB 107MB 107MB ext3 Linux/Windows data 2 107MB 2000GB 2000GB Linux LVM lvm pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name VolGroup00 PV Size 1.82 TB / not usable 225.00 KB Allocatable yes PE Size (KByte) 32768 Total PE 59601 Free PE 1 Allocated PE 59600 PV UUID C0dkqJ-QObR-qx8I-EQZh-LV65-w2Df-nFJhw lvdisplay --- Logical volume --- LV Name /dev/VolGroup00/LogVol00 VG Name VolGroup00 LV UUID lBPFKP-OYX9-rPVU-f2RN-iO4q-Z9LP-RyFbUs LV Write Access read/write LV Status available # open 1 LV Size 1.81 TB Current LE 59351 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Name /dev/VolGroup00/LogVol01 VG Name VolGroup00 LV UUID 1uJ9kD-l9WD-gEjQ-grAz-uppa-Un3d-HijG6w LV Write Access read/write LV Status available # open 1 LV Size 7.78 GB Current LE 249 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 -- Kind regards, Soeren -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list ========================================================== For more information on the Television New Zealand Group, visit us online at tvnz.co.nz ========================================================== CAUTION: This e-mail and any attachment(s) contain information that is intended to be read only by the named recipient(s). This information is not to be used or stored by any other person and/or organisation. -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
