Hi Mark,
Do you override the automatic fsck check with tune2fs? It would be a huge bummer to do through a check frequently, I forget the defaults but I think 180 days or a certain number of mounts, iirc.
Jason
On Wed, Apr 10, 2013 at 11:39 AM, m.roth@5-cent.us wrote:
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.
mark
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