yahoo-eng-team team mailing list archive

[James Falcon <1291820@xxxxxxxxxxxxxxxxxx>]

Tracked in Github Issues as https://github.com/canonical/cloud-
init/issues/2432

** Bug watch added: github.com/canonical/cloud-init/issues #2432
   https://github.com/canonical/cloud-init/issues/2432

** Changed in: cloud-init
       Status: Triaged => Expired

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/1291820

Title:
  cc_mounts.py fails to remove ephemeral entry from fstab

Status in cloud-init:
  Expired

Bug description:
  1) Create an m1.small instance starting with a stock Raring AMI.
  2) Create a new EBS-backed AMI from that instance
  3) Create a t1.micro instance with user-data 

  mounts:
  - [ephemeral0, null]

  4) look at /etc/fstab

  Expected: There should be no entry for the ephemeral device.

  Actual: There is

  /dev/xvdb       /mnt/ephemeral  auto
  defaults,nobootwait,comment=cloudconfig 0       2

  cc_mounts.py adds the entry to fstab in step 1) but then fails to
  remove the entry in step 3) because it bails out prematurely in line

  https://github.com/number5/cloud-
  init/blob/0.7.2/cloudinit/config/cc_mounts.py#L155

  before it has a chance to filter the line in

  https://github.com/number5/cloud-
  init/blob/0.7.2/cloudinit/config/cc_mounts.py#L175

  The relevant (I hope) log lines are

  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] helpers.py[DEBUG]: Running config-disk-setup using lock (<FileLock using file '/var/lib/cloud/instances/i-77144128/sem/config_disk_setu
  p'>)
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] util.py[DEBUG]: Writing to /var/lib/cloud/instances/i-77144128/sem/config_mounts - wb: [420] 19 bytes
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] helpers.py[DEBUG]: Running config-mounts using lock (<FileLock using file '/var/lib/cloud/instances/i-77144128/sem/config_mounts'>)
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Attempting to determine the real name of ephemeral0
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Ignorming nonexistant named mount ephemeral0
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Attempting to determine the real name of ephemeral0
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Ignoring nonexistant default named mount ephemeral0
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Attempting to determine the real name of swap
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] DataSourceEc2.py[DEBUG]: Unable to convert swap to a device
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Ignoring nonexistant default named mount swap
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: Skipping non-existent device named ephemeral0
  Mar 13 06:28:08 ip-10-222-249-176 [CLOUDINIT] cc_mounts.py[DEBUG]: No modifications to fstab needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1291820/+subscriptions