[Bug 1488688] Re: partprobe fails on /dev/mapper/353333330000007d0

[ChristianEhrhardt]

Sorry, I forgot to subscribe back then.

I used Xenial (to check if it is an issue in newer code) and used real
devices (to check if scsi_debug might be the issue).

Following your commands exactly doesn't give me a /dev/mapper entry - only a /dev/sd* device.
But I haven't checked what might be needed to get there as I had real HW around.

With that it ended up as:
1. throwing the error
2. the following links in /dev/mapper
lrwxrwxrwx 1 root root 7 Apr 20 10:53 /dev/mapper/36005076306ffd6b60000000000002403 -> ../dm-1
lrwxrwxrwx 1 root root 7 Apr 20 10:53 /dev/mapper/36005076306ffd6b60000000000002403-part2 -> ../dm-3

Is the issue you want to point out not the (just a message) warning of:
"device-mapper: create ioctl on 36005076306ffd6b60000000000002403p2part2-mpath-36005076306ffd6b60000000000002403 failed: Device or resource busy"

Or is the main issue you point out that you have a ...p2 AND a
...-part2?

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to multipath-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1488688

Title:
  partprobe fails on /dev/mapper/353333330000007d0

Status in multipath-tools package in Ubuntu:
  Triaged

Bug description:
  Steps to reproduce on Ubuntu 14.04 on a virtual machine with no
  /dev/sda device

  # apt-get install linux-image-extra-3.13.0-61-generic
  # modprobe scsi_debug vpd_use_hostno=0 add_host=1 dev_size_mb=200
  # ls -l /dev/mapper
  total 0
  lrwxrwxrwx 1 root root        7 Aug 25 23:00 353333330000007d0 -> ../dm-0
  crw------- 1 root root  10, 236 Aug 25 11:45 control
  # /sbin/sgdisk --new=2:0:100M --change-name=2:'ceph journal' --partition-guid=2:a94ad65f-fadb-4178-851b-5261c06ee3b9 --typecode=2:45b0969e-8ae0-4982-bf9d-5a8d867af560 --mbrtogpt -- /dev/mapper/353333330000007d0
  Warning: The kernel is still using the old partition table.
  The new table will be used at the next reboot.
  The operation has completed successfully.
  # partprobe /dev/mapper/353333330000007d0
  Device /dev/mapper/353333330000007d0p2 not found
  device-mapper: table ioctl on  failed: No such device or address
  Device /dev/mapper/353333330000007d0p2 not found
  device-mapper: table ioctl on  failed: No such device or address
  # ls -l /dev/mapper
  total 0
  lrwxrwxrwx 1 root root        7 Aug 25 23:00 353333330000007d0 -> ../dm-0
  brw-rw---- 1 root disk 252,   2 Aug 25 23:00 353333330000007d0p2
  crw------- 1 root root  10, 236 Aug 25 11:45 control
  # partprobe /dev/mapper/353333330000007d0
  # ls -l /dev/mapper
  total 0
  lrwxrwxrwx 1 root root        7 Aug 25 23:00 353333330000007d0 -> ../dm-0
  brw-rw---- 1 root disk 252,   1 Aug 25 23:00 353333330000007d0-part2
  brw-rw---- 1 root disk 252,   2 Aug 25 23:00 353333330000007d0p2
  crw------- 1 root root  10, 236 Aug 25 11:45 control

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1488688/+subscriptions