Re: [gentoo-user] fdisk - expanding a partition beyond 2TB
On 27 Aug 2008, at 05:28, Dave Oxley wrote: ... I've just added a fourth disk to my Raid 5 set increasing the capacity from 1.5TB to 2.25TB. I have 4 partitions on this volume set; the fourth of which is 1.49TB which is then further subdivided using lvm2. ... Hi there, Is the problem that you've got 4 partitions this prevents you form making a 5th? Because using LVM I would simply create a new partition and add it to the volume group. The contents *should* indeed remain intact if one simply deletes the partition recreates at the same starting point, yet larger. I'm sure I've used parted as well as cfdisk for this sort of thing in the past, yet hesitate to recommend either as I would fear making a typo with an unfamiliar tool, thereby rendering my data mythical. Stroller.
Re: [gentoo-user] fdisk - expanding a partition beyond 2TB
Stroller wrote: On 27 Aug 2008, at 05:28, Dave Oxley wrote: ... I've just added a fourth disk to my Raid 5 set increasing the capacity from 1.5TB to 2.25TB. I have 4 partitions on this volume set; the fourth of which is 1.49TB which is then further subdivided using lvm2. ... Hi there, Is the problem that you've got 4 partitions this prevents you form making a 5th? Because using LVM I would simply create a new partition and add it to the volume group. The contents *should* indeed remain intact if one simply deletes the partition recreates at the same starting point, yet larger. I'm sure I've used parted as well as cfdisk for this sort of thing in the past, yet hesitate to recommend either as I would fear making a typo with an unfamiliar tool, thereby rendering my data mythical. Stroller. Yes, part of the problem is that I can't create a fifth partition. However, even if possible, this wouldn't have been my ideal solution anyway as it would negate some of the performance benefit gained from having one huge partition over the whole array. But my real question is, as I've reached the max partition for the msdos partition table, can I migrate to a GPT partition table without losing my data? Cheers, Dave.
Re: [gentoo-user] fdisk - expanding a partition beyond 2TB
Hi, Dave Oxley a écrit : So basically does anyone have any experience moving from an fdisk partition table to a GNU parted partition table without losing filesystems, data, etc? A partition table is a partition table, whatever is the tool you use to handle it. I didn't met your problem with size limitation but lost partition table and changed partitions tables on drives. For this, i used different tools, even proprietary ones, and never had conflict, except with Vista special partition (that has a bigger size than the actual disk size xD ) My two cents, Jil.
[gentoo-user] fdisk - expanding a partition beyond 2TB
All, I've just added a fourth disk to my Raid 5 set increasing the capacity from 1.5TB to 2.25TB. I have 4 partitions on this volume set; the fourth of which is 1.49TB which is then further subdivided using lvm2. So using fdisk I deleted partition 4 and recreated it from the same position which expanded the partition to 1.99TB. I later realised that it should have expanded to 2.24TB so I did some googling and found that you can't create a partition 2TB with fdisk. I found a page that suggested using GNU parted to create partitions of this size but it didn't mention whether this would work to expand a partition. So basically does anyone have any experience moving from an fdisk partition table to a GNU parted partition table without losing filesystems, data, etc? Cheers, Dave.
