[... Once upon a time I asked about Linux support of >2TB filesystems ...]
Okay, task is over and we have a 2.5TB ext3 filesystem (eventually not 6TB),
it looks stable also.
Here are the findings:
1. For >2TB, one must use a "gpt" type partition table and not the default,
msdos one. Same goes for MS-Windows, if I got it right.
1.1 fdisk doesn't support gpt, we used parted.
1.2 grub doesn't seem to either support gpt or such huge disk/partition. We
could afford booting from another, small disk (/boot comes back to
live? :) ), so that did it.. So we didn't research the grub thing too deep.
2. At the beginning we used an msdos partition for the big disk. It didn't
give errors immediately! only when accessing the >2TB blocks problem occurred
(i.e. when running fsck, or after few days of writing..).
3. CentOS5 (and thus RHEL5) partitioning config tool ("disk druid", I think?)
doesn't handle big disks/partition automatically: it created msdos partition
table.
Thanks again for your replies.
- Oren
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