Administrace komentářů

dobry den

jenom dodam, ze postup uvedeny v odkazu u me funguje az po pridani modprobe dm-mod.

a at je to tady cele:

root@setapouch:~# dd if=/dev/zero of=zkouska bs=$((1024*1024)) count=1024
1024+0 vstoupivších záznamů
1024+0 vystoupivších záznamů
1 073 741 824 bajtů (1,1 GB) zkopírováno, 18,1613 s, 59,1 MB/s
root@setapouch:~# losetup -f zkouska 
root@setapouch:~# cat /proc/partitions
major minor  #blocks  name

   8     0   78150744 sda
   8     1    1959898 sda1
   8     2   76188262 sda2
   7     0    1048576 loop0
root@setapouch:~# fdisk /dev/loop0
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x73740bc7.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-130, default 1): 
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-130, default 130): 65

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (66-130, default 66): 
Using default value 66
Last cylinder or +size or +sizeM or +sizeK (66-130, default 130): 
Using default value 130

Command (m for help): p

Disk /dev/loop0: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x73740bc7

      Device Boot      Start         End      Blocks   Id  System
/dev/loop0p1               1          65      522081   83  Linux
/dev/loop0p2              66         130      522112+  83  Linux

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 22: Nepřípustný argument.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
root@setapouch:~# modprobe dm-mod
root@setapouch:~# kpartx -a /dev/loop0
root@setapouch:~# cat /proc/partitions
major minor  #blocks  name

   8     0   78150744 sda
   8     1    1959898 sda1
   8     2   76188262 sda2
   7     0    1048576 loop0
 253     0     522081 dm-0
 253     1     522112 dm-1
root@setapouch:~# ls /dev/dm-*
/dev/dm-0  /dev/dm-1
root@setapouch:~# kpartx -d /dev/loop0
root@setapouch:~# losetup -d /dev/loop0
root@setapouch:~# cat /proc/partitions 
major minor  #blocks  name

   8     0   78150744 sda
   8     1    1959898 sda1
   8     2   76188262 sda2
root@setapouch:~#

marek