Collins, Kevin L. schrieb: > My problem comes in when I go to access the space on the MD1000. I > created a single RAID10 array with a single hot-spare on the unit. This > equates to about 6 TB of useable space. But using fdisk, I can only > create a _/single/_ 2 TB partition. I'd obviously like to access all of > the 6 TB. That's because dos partition tables cannot address more than 2 TB
> > So, I've done a bit of research and found that to get past this limit, I > need to use parted and GPT labeled drives. Which seems to be the proper > way to get this done. But I've never used GPT labeled drives and I'm > concerned about issues with failures, recoveries and expansions. > after all gpt is just another on-disk format for describing your partitions. You can use standard "parted" to edit the gpt. Concerning failures: gpt is definitely not more error-prone than dos disklabel Concerning recovery: people just need to know how to create a gpt disklabel (i.e. type "mklabel gpt" at the parted prompt) Concerning expansion: AFAICT gpt gives you at least the same functionality as the old dos labels. Thus, extendin the partition with parted and run pvextends it should work (haven't done that yet, I always add new LUNs for expansion). > > Questions: > > 1). Am I going down the proper road? One of them, yes. > 2). Is there a better way? Dunno, but there are other ways: - just use the whole device without partitioning (i.e. pvcreate /dev/sdX instead of /dev/sdx1) - let the md1000 split your LUN into parts of 2 TB each (I don't know wether md1000 supports it, but it should) and join them into one VG > 3). What hurdles will I need to overcome? Depends... I hope you don't want to boot off that volume... > > Oh, one other little detail about this server. When it's deployed it > will be in an offsite location with only SSH access, so making things > easy is the goal here. Everyone who is used to parted will be able to create and manage gpt partition tables. Regards, Andreas -- Solvention Egermannstr. 6-8 53359 Rheinbach Tel: +49 2226 158179-0 Fax: +49 2226 158179-9 http://www.solvention.de mailto:[email protected]
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