[Bug 1427859] [NEW] ISST-SAN:Need a common format for partition listing using kpartx, fdisk.distrib and ls -l

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== Comment: #0 - LEKSHMI C. PILLAI <lekshmi.cpillai at in.ibm.com> - 2015-02-25 09:02:18 ==
This is a KVM guest with Ubuntu 15.04.

I am facing issues with format with partition listing using different
commands

In zap06 I created partitions on mpath29 using fdisk.distrib

Before partition creation:

root at zap06:/dev/mapper# fdisk.distrib  -l /dev/mapper/mpath29---------->
Disk /dev/mapper/mpath29: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath29--------------->
root at zap06:/dev/mapper# ls -l mpath29--------------------------------->
lrwxrwxrwx 1 root root 7 Feb 24 08:46 mpath29 -> ../dm-6
root at zap06:/dev/mapper# 

After Partition  creation:

root at zap06:/dev/mapper# fdisk.distrib -l
/dev/mapper/mpath29--------------->

Disk /dev/mapper/mpath29: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xce509b1c

Device                Boot    Start      End  Sectors Size Id Type
/dev/mapper/mpath29p1          2048     2048        0   0B 83 Linux
/dev/mapper/mpath29p2          4096 10489855 10485760   5G 83 Linux
/dev/mapper/mpath29p3      10489856 20975615 10485760   5G 83 Linux

root at zap06:/dev/mapper# kpartx -r /dev/mapper/mpath29
mpath29p2 : 0 10485760 /dev/mapper/mpath29 4096--------------
mpath29p3 : 0 10485760 /dev/mapper/mpath29 10489856-------------------

But instead of names like mpath29pX, the actual device nodes have names
like mpath29-partX:

root at zap06:/dev/mapper# ls -l /dev/mapper/mpath29*
lrwxrwxrwx 1 root root       7 Feb 25 01:30 /dev/mapper/mpath29 -> ../dm-6
brw-rw---- 1 root disk 252, 68 Feb 25 01:30 /dev/mapper/mpath29-part2
brw-rw---- 1 root disk 252, 69 Feb 25 01:30 /dev/mapper/mpath29-part3
root at zap06:/dev/mapper# 

After that I created the filesystem on these partitions using the
convention "mpath-part2".Its created successfully and I am able to mount
it

root at zap06:/dev/mapper# mount | grep "29"
/dev/mapper/mpath29-part2 on /Fs29 type ext4 (rw)
/dev/mapper/mpath29-part3 on /FS29_1 type xfs (rw)
root at zap06:/dev/mapper# 

Thanks
Lekshmi

** Affects: multipath-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: architecture-ppc64le bugnameltc-122065 severity-high targetmilestone-inin---
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ISST-SAN:Need a common format for partition listing using kpartx,fdisk.distrib and ls -l
https://bugs.launchpad.net/bugs/1427859
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