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Bug 1494475

Summary: Anaconda thinpool volume size not calculate correctly when using --grow
Product: Red Hat Enterprise Linux 7 Reporter: Paul Dwyer <pdwyer>
Component: python-blivetAssignee: David Lehman <dlehman>
Status: CLOSED ERRATA QA Contact: Release Test Team <release-test-team-automation>
Severity: high Docs Contact:
Priority: high    
Version: 7.4CC: dlehman, jmontleo, jstodola, pdwyer, rhandlin, sauchter
Target Milestone: rcKeywords: Regression
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: python-blivet-0.61.15.69-1 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-04-10 18:23:13 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Paul Dwyer 2017-09-22 11:03:36 UTC 
Description of problem:
Anaconda when using --grow option for thinpool volume on RHEL 7.4 does not make calculation correctly, whereas RHEL 7.3 did 
Anaconda fails with traceback below when trying to create volume

Version-Release number of selected component (if applicable):
RHEL7.4
anaconda 21.48.22.121-1

How reproducible:
every time using attached kickstart file

Steps to Reproduce:
1. Created small vm with 40Gb space
2. install using attached kickstart
3. anaconda errors out

Actual results:
traceback

anaconda 21.48.22.121-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/devices/storage.py", line 488, in create
    raise errors.DeviceCreateError(str(e), self.name)
  File "/usr/lib/python2.7/site-packages/blivet/deviceaction.py", line 293, in execute
    self.device.create()
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 373, in processActions
    action.execute(callbacks)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 380, in doIt
    self.devicetree.processActions(callbacks)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 230, in turnOnFilesystems
    storage.doIt(callbacks)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 204, in doInstall
    turnOnFilesystems(storage, mountOnly=flags.flags.dirInstall, callbacks=callbacks_reg)
  File "/usr/lib64/python2.7/threading.py", line 765, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 227, in run
    threading.Thread.run(self, *args, **kwargs)
DeviceCreateError: ('lvcreate failed for vg_system/lv_system_thinpool: running /sbin/lvm lvcreate --thinpool vg_system/lv_system_thinpool --size 9244m --poolmetadatasize 16 --chunksize 64 --config  devices { preferred_names=["^/dev/mapper
/", "^/dev/md/", "^/dev/sd"] }  failed', 'vg_system-lv_system_thinpool')


Expected results:
Installation to succeed

Additional info:
This disk layout worked on RHEL7.3

Further testing shows that specifying exact size works but using --grow doesn't
e.g.
logvol none --fstype="None" --thinpool --name=lv_system_thinpool --vgname=vg_system --chunksize=64 --size=9212 --metadatasize=16
Comment 5 David Lehman 2017-12-20 19:15:47 UTC 
Logs from the successful 7.3 installation would be useful. Is it possible to get them?
Comment 9 David Lehman 2018-02-02 19:37:48 UTC 
I was able to reproduce the failure and the following patch solves the issue for me:

  https://github.com/storaged-project/blivet/pull/654
Comment 11 Jan Stodola 2018-02-22 13:03:23 UTC 
Reproduced on RHEL-7.4 GA
Verified with python-blivet-0.61.15.69-1.el7, compose RHEL-7.5-20180221.0

Moving to VERIFIED.
Comment 14 errata-xmlrpc 2018-04-10 18:23:13 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0982