[PLUG] Drive partitioning
Elliott Mitchell
ehem at m5p.com
Fri Jan 13 01:24:18 UTC 2006
>From: Robert Kopp <iconoklastic at yahoo.com>
> Logical partitions often serve the needs of Linux users as well as any other kind. My Debian boot partition is a logical partition. I believe you can have only one extended partition per physical IDE drive. How many logical partitions can it contain?
>
Somewhere between "lots" and "infinite". You'll start running out of
device minor numbers at 11 or 59, so those are the limits as far as I
know.
>From: Rich Shepard <rshepard at appl-ecosys.com>
> In my ignorance of all this technical stuff, I have 12 partitions on this
> server/workstation:
>
> /dev/hda3 swap swap defaults 0 0
> /dev/hda1 / reiserfs defaults 1 1
> /dev/hda10 /tmp reiserfs defaults 1 2
> /dev/hda11 /vm reiserfs defaults 1 2
> /dev/hda12 /data1 reiserfs defaults 1 2
> /dev/hda13 /data2 reiserfs defaults 1 2
> /dev/hda2 /boot reiserfs defaults 1 2
> /dev/hda5 /home reiserfs defaults 1 2
> /dev/hda6 /usr reiserfs defaults 1 2
> /dev/hda7 /usr/local reiserfs defaults 1 2
> /dev/hda8 /opt reiserfs defaults 1 2
> /dev/hda9 /var reiserfs defaults 1 2
>
> It's been working just fine for almost 2.5 years.
Cute. Contrast mine...
/dev/md0 / ext3 defaults,ro 12 2
/dev/md1 none swap sw 0 0
proc /proc proc defaults 0 0
tmpfs /tmp tmpfs defaults,nodev,noexec,nosuid,size=16M 0 0
/dev/md5 none jbd defaults 0 1
/dev/md4 /var ext3 defaults,data=journal 12 3
/dev/md3 /usr ext3 defaults,ro,nodev 12 3
/dev/md6 /mnt/lclhme ext3 defaults,nodev,nosuid 12 3
/mnt/lclhme/lcl /usr/local ext3 defaults,bind,ro 0 0
/mnt/lclhme/hme /home ext3 defaults,bind 0 0
#/dev/sdd /mnt/stage ext3 defaults,nodev,noexec,nosuid 0 3
Now I just need #316040 fixed...
>From: Robert Kopp <iconoklastic at yahoo.com>
> According to another source, SCSI has at most 15; IDE, 63
>
> http://lists.debian.org/debian-user/2004/07/msg03408.html
>
> I wonder what the reason for this discrepancy is?
Number of disks you're likely to have and scarcity of device numbers.
Given you can have 15 conventional SCSI disks with only one controller,
you can use a lot of device nodes quickly. With merely 2 disks per
controller, scarcity isn't as a big deal quite as quickly with IDE.
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