[parted-Bugs][303530] partprobe command loses extended partition

[parted-bugs]

Bugs item #303530, was opened at 2006-06-08 07:18
Status: Open
Priority: 3
Submitted By: rich turner (storix-guest)
Assigned to: Nobody (None)
Summary: partprobe command loses extended partition 
Resolution: Wont Fix
Group: Version 1.7.0
Category: parted


Initial Comment:
After running partprobe the kernel loses touch with the extended partition on 
my system. Is this a bug or is this by design? If this is by design then why?

# sfdisk -l /dev/hda
Disk /dev/hda: 39813 cylinders, 16 heads, 63 sectors/track
Warning: extended partition does not start at a cylinder boundary.
DOS and Linux will interpret the contents differently.
Warning: The partition table looks like it was made
  for C/H/S=*/255/63 (instead of 39813/16/63).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/hda1   *      0+     30      31-    248976   83  Linux
/dev/hda2         31    2497    2467   19816177+   5  Extended
/dev/hda3          0       -       0          0    0  Empty
/dev/hda4          0       -       0          0    0  Empty
/dev/hda5         31+   2497    2467-  19816146   8e  Linux LVM

# cat /proc/partitions
major minor  #blocks  name

   3     0   20066251 hda
   3     1     248976 hda1
   3     5   19816146 hda5
   3    64   20066251 hdb
   3    65      32768 hdb1
   3    66   20032983 hdb2

# ls /sys/block/hda
dev  device  hda1  hda5  queue  range  removable  size  stat

# uname -a
Linux rich 2.6.12-10-386 #1 Fri Apr 28 13:13:44 UTC 2006 i686 GNU/Linux

# partprobe -v
partprobe (parted1.7.0)

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>Comment By: Andrew Clausen (clausen-guest)
Date: 2007-02-01 16:01

Message:
libparted uses a (deprecated?) interface called blkpg to inform the kernel of 
the partition table.  Unfortunately, this interface does not support 
overlapping partitions.  The workaround is to simply not inform the kernel of 
extended partitions.

Is there any reason to register an extended partition, other than "that's what 
Linux has always done"?

----------------------------------------------------------------------

Comment By: Andrew Clausen (clausen-guest)
Date: 2007-02-01 16:01

Message:
libparted uses a (deprecated?) interface called blkpg to inform the kernel of 
the partition table.  Unfortunately, this interface does not support 
overlapping partitions.  The workaround is to simply not inform the kernel of 
extended partitions.

Is there any reason to register an extended partition, other than "that's what 
Linux has always done"?

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You can respond by visiting: 
http://alioth.debian.org/tracker/?func=detail&atid=410685&aid=303530&group_id=30287