Jason T. Slack-Moehrle wrote:
I have a Drobo, connected to a CentOS 6.4 box. The box sees it as /dev/sdg.
I want to format it ext3 (as they dont support ext4) but when I try I get:
<snip>
So I run: # parted GNU Parted 2.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) select /dev/sdg Using /dev/sdg (parted) print Model: DROBO DroboPro (scsi) Disk /dev/sdg: 17.6TB Sector size (logical/physical): 512B/512B Partition Table: gpt
Number Start End Size File system Name Flags
(parted)
and looking at an example of creating a partition: (parted) mkpart primary 106 16179
I dont know what to do next since I dont see any partitions listed. I dont know what do to for the start and end point, although the man page says "size in MB". Do I just say 0 to (and convert 16.0TB to MB? Yes, I know it says 17.6 TB but this model drobo can only support partitions up to 16tb without making a second partition.
Can anyone provide some advice on that I am missing conceptually?
Several issues. First, if you use 4k blocks, the max filesystem size for ext3 is 16TB (see wikipedia on ext3). Second, I can't remember where, but on some filesystem tool's manpage, I read that the tools have problems going over 16TB. Third, fsck on a 16TB filesystem will take *days*, literally. I'm setting up, right now, a humongous RAID box, and I'll probably be divvying up the 42TB (mirrored!) as 3 14TB filesystems, and they're going to be ext4.
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