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Bug 1522750

Summary: vdo --logfile should not allow block device
Product: Red Hat Enterprise Linux 7 Reporter: Jakub Krysl <jkrysl>
Component: vdoAssignee: Ken Raeburn <raeburn>
Status: CLOSED ERRATA QA Contact: Jakub Krysl <jkrysl>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.5CC: awalsh, bjohnsto, jkrysl, limershe, lmiksik, sweettea
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: 6.1.0.100 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-04-10 15:48:32 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 Jakub Krysl 2017-12-06 11:28:10 UTC 
Description of problem:
When using option --logfile with value of block device, logging fails:

# vdo create --device=/dev/sdl --logfile=/dev/sdk --name vdo --verbose
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 774
Creating VDO vdo
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file Logger.py, line 52
    pvcreate -qq --test /dev/sdl
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file Command.py, line 165
vdo: ERROR -   Device /dev/sdl excluded by a filter.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 822
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 829

# lsblk
NAME                    MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
--snip--
sdk                       8:160  0  5.5T  0 disk
sdl                       8:176  0  5.5T  0 disk


# vdo modify --readCache enabled --logfile /dev/sdk
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 774
vdo: ERROR - Missing required argument '--name'
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 822
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 875, in emit
    self.flush()
  File "/usr/lib64/python2.7/logging/__init__.py", line 835, in flush
    self.stream.flush()
IOError: [Errno 28] No space left on device
Logged from file vdo, line 829


Version-Release number of selected component (if applicable):
vdo-6.1.0.72-12

How reproducible:
100%

Steps to Reproduce:
1. use --logfile $block_device

Actual results:
python IO errors

Expected results:
ERROR: Cannot use block device as logging file

Additional info:
Comment 3 Jakub Krysl 2018-01-02 08:42:08 UTC 
# vdo create --device=/dev/mapper/rhel_hp--dl380pg8--09-home --logfile=/dev/mapper/rhel_hp--dl380pg8--09-home --name=vdo_test
usage: vdo create [-h] -n <volume> --device <devicepath>
                  [--activate {disabled,enabled}]
                  [--blockMapCacheSize <megabytes>]
                  [--blockMapPeriod <period>]
                  [--compression {disabled,enabled}]
                  [--deduplication {disabled,enabled}]
                  [--emulate512 {disabled,enabled}] [--force]
                  [--indexMem <gigabytes>] [--readCache {disabled,enabled}]
                  [--readCacheSize <megabytes>]
                  [--sparseIndex {disabled,enabled}]
                  [--vdoAckThreads <threadCount>]
                  [--vdoBioRotationInterval <ioCount>]
                  [--vdoBioThreads <threadCount>]
                  [--vdoCpuThreads <threadCount>]
                  [--vdoHashZoneThreads <threadCount>]
                  [--vdoLogicalSize <megabytes>]
                  [--vdoLogicalThreads <threadCount>]
                  [--vdoLogLevel {critical,error,warning,notice,info,debug}]
                  [--vdoPhysicalThreads <threadCount>]
                  [--vdoSlabSize <megabytes>] [--writePolicy {async,sync}]
                  [-f <file>] [--logfile <pathname>] [--verbose]
vdo create: error: argument --logfile: /dev/mapper/rhel_hp--dl380pg8--09-home is a block device
Comment 6 errata-xmlrpc 2018-04-10 15:48:32 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/RHEA-2018:0871