* cfdisk will happily create a partition of size zero
@ 2015-01-31 9:58 Benno Schulenberg
2015-02-05 19:59 ` Phillip Susi
0 siblings, 1 reply; 3+ messages in thread
From: Benno Schulenberg @ 2015-01-31 9:58 UTC (permalink / raw)
To: Util-Linux
Hi,
My disk is configured like this:
Disk: /dev/sda
Size: 149.1 GiB, 160041885696 bytes, 312581808 sectors
Label: dos, identifier: 0x5ef35ef3
Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 31262489 31260442 14.9G 83 Linux
/dev/sda2 * 31262490 62508914 31246425 14.9G 83 Linux
/dev/sda3 62508915 93755339 31246425 14.9G 83 Linux
/dev/sda4 93755401 312576704 218821304 104.4G 5 Extended
|-/dev/sda5 93755403 94767434 1012032 494.2M 82 Linux swap / Solari
|-/dev/sda6 94767498 252975554 158208057 75.5G 83 Linux
|-/dev/sda7 252975618 282776129 29800512 14.2G 83 Linux
`-/dev/sda8 282776193 312576704 29800512 14.2G 83 Linux
Free space 312578048 312581807 3760 1.9M
When I delete sda5 to sda8 and then sda4, and then recreate sda4,
and then in the free space create a partition of 1 sector, things
look like this:
/dev/sda4 93755392 312581807 218826416 104.4G 5 Extended
|-/dev/sda5 93757440 93757440 0 0B 83 Linux
`-Free space 93759488 312581807 218822320 104.4G
Strange. Start and end of sda5 are on the same sector?
Anyway, if I then in the free space try to create a partition of
say 123M, the response on the bottombar is (in red):
Start sector 93759488 out of range.
??
Benno
--
http://www.fastmail.com - Access your email from home and the web
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: cfdisk will happily create a partition of size zero
2015-01-31 9:58 cfdisk will happily create a partition of size zero Benno Schulenberg
@ 2015-02-05 19:59 ` Phillip Susi
2015-02-06 9:21 ` Karel Zak
0 siblings, 1 reply; 3+ messages in thread
From: Phillip Susi @ 2015-02-05 19:59 UTC (permalink / raw)
To: Benno Schulenberg, Util-Linux
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 1/31/2015 4:58 AM, Benno Schulenberg wrote:
> /dev/sda4 93755392 312581807 218826416 104.4G 5
> Extended |-/dev/sda5 93757440 93757440 0
> 0B 83 Linux `-Free space 93759488 312581807 218822320
> 104.4G
>
> Strange. Start and end of sda5 are on the same sector?
Looks like there is also an off by one error in the size calculation
since a partition that starts and ends on the same sector does still
occupy that one sector, so its size can not be zero.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: cfdisk will happily create a partition of size zero
2015-02-05 19:59 ` Phillip Susi
@ 2015-02-06 9:21 ` Karel Zak
0 siblings, 0 replies; 3+ messages in thread
From: Karel Zak @ 2015-02-06 9:21 UTC (permalink / raw)
To: Phillip Susi; +Cc: Benno Schulenberg, Util-Linux
On Thu, Feb 05, 2015 at 02:59:42PM -0500, Phillip Susi wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 1/31/2015 4:58 AM, Benno Schulenberg wrote:
> > /dev/sda4 93755392 312581807 218826416 104.4G 5
> > Extended |-/dev/sda5 93757440 93757440 0
> > 0B 83 Linux `-Free space 93759488 312581807 218822320
> > 104.4G
> >
> > Strange. Start and end of sda5 are on the same sector?
>
> Looks like there is also an off by one error in the size calculation
> since a partition that starts and ends on the same sector does still
> occupy that one sector, so its size can not be zero.
It was core of the problem -), all this should be already fixed. Try it.
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-01-31 9:58 cfdisk will happily create a partition of size zero Benno Schulenberg
2015-02-05 19:59 ` Phillip Susi
2015-02-06 9:21 ` Karel Zak
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