On Thu, 21 Dec 2000, rpjday wrote:
> On Thu, 21 Dec 2000, Fred Edmister wrote:
>
> > From my experience, the +'s mean that when the system was
> > configured, those partitions were set to expand to fill the disk should
> > there be any room left... I have one partition set on my servers to
> > expand, I'm not sure what the details are on the expansion... (wether it
> > only expands as needed or just when there is extra space, it automatically
> > claims it.. ) Hope this helps.
> >
> nope, that ain't it. first, why should there be *any* connection
> between making a partition growable during a linux install and what
> kind of attributes that partition gets on the disk afterwards?
>
> second, i just checked, and an explicitly-sized /boot partition
> on one of my hosts has the "+".
>
> i still think it has to do with not being on an even cylinder
> boundary.
ok. when in doubt, read the source. just grabbed the util-linux
RPM and installed it, zipping thru fdisk.c (if you'd like to follow
along, the salient code starts at line 1388, and contains the
following excerpt:
printf(_("%*s Boot Start End Blocks Id System\n"),
w+1, _("Device"));
for (i = 0 ; i < partitions; i++) {
struct pte *pe = &ptes[i];
p = pe->part_table;
if (p->sys_ind) {
unsigned int psects = get_nr_sects(p);
unsigned int pblocks = psects;
unsigned int podd = 0;
if (sector_size < 1024) {
pblocks /= (1024 / sector_size);
podd = psects % (1024 / sector_size);
}
... some stuff deleted ...
/* odd flag on end */ (long) pblocks, podd ? '+' : ' ', <== AHA!!!!!
/* type id */ p->sys_ind,
/* type name */ (type = partition_type(p->sys_ind)) ?
type : _("Unknown"));
check_consistency(p, i);
}
}
so a '+' is printed when the partition is not an even number of
*logical* blocks.
rday
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