tree 7645c8d74ce8900aeefdc590d50f69bd8b8299c3
parent 5988b528c2fcb455fa89808f39089c21ee4b1f30
author Evgeny Antyshev <eantyshev@virtuozzo.com> 1479730638 +0000
committer Evgeny Antyshev <eantyshev@virtuozzo.com> 1479823895 +0000

Make get_partitions() work for partitioned disks

In general case, attached disks could be partitioned,
and this leads to multiple records in /proc/partitions,
for my laptop which is:
evgeny@eantyshev2:~$ cat /proc/partitions
major minor  #blocks  name

   8        0  125034840 sda
   8        1     524288 sda1
   8        2     249856 sda2
   8        3  124259328 sda3
   8       16  976762584 sdb
  11        0    1048575 sr0
 252        0 1084366848 dm-0
 252        1   16650240 dm-1

QEMU adds block devices as unpartitioned disks, so that
we have 1 disk <-> 1 partition match. But this is just
an implementation specific coincidence.
Because the attached disk can have GPT table
and a primary partition covering available disk space, and in this
case it would mean 2 extra devices.

Namely, to run Tempest on Virtuozzo containers, we should allow for
partitioned disks attached.

CT-f9e98104 /# cat /proc/partitions
major minor  #blocks  name

 182   686608    2097152 ploop42913
 182   686609    2095104 ploop42913p1
 182   506688    1048576 ploop31668
 182   506689    1046528 ploop31668p1

Here we see 2 devices for each disk: root disk block device ploop31668,
and partition block device ploop31668p1. We only want to see
root device for each disk, not the partition ones, or
some testcases don't work
(test_verify_created_server_ephemeral_disk naturally expects
device appearance of 1 extra device).

Change-Id: Icd0043b661c41a51acf62cc07cb80c2e9bae56d4