Bug 1020543 - Moving one storage domain to maintenance makes the entire data center unusable
Moving one storage domain to maintenance makes the entire data center unusable
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: vdsm (Show other bugs)
Unspecified Unspecified
urgent Severity urgent
: ---
: 3.3.0
Assigned To: Federico Simoncelli
Leonid Natapov
: Regression
Depends On:
Blocks: 3.3snap1
  Show dependency treegraph
Reported: 2013-10-17 17:16 EDT by Federico Simoncelli
Modified: 2016-02-10 13:40 EST (History)
11 users (show)

See Also:
Fixed In Version: is20
Doc Type: Bug Fix
Doc Text:
Previously, moving one storage domain to maintenance mode triggered an SPM contention between hosts, and caused the entire data center to become unusable. This was due to a regression which caused a KeyError on isoprefix for inactive domains. This update fixes the KeyError, so now when a storage domain is moved to maintenance the rest of the storage pool is still usable.
Story Points: ---
Clone Of:
Last Closed: 2014-01-21 11:18:45 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: Storage
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
abaron: Triaged+

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Tracker ID Priority Status Summary Last Updated
oVirt gerrit 20250 None None None Never
oVirt gerrit 20300 None None None Never

  None (edit)
Description Federico Simoncelli 2013-10-17 17:16:47 EDT
Description of problem:
Moving one storage domain to maintenance makes the entire data center unusable.

The SPM contention moves from one host to another and it never succeeds as the following traceback can be found in vdsm.log:

Thread-708::ERROR::2013-10-17 17:13:23,196::task::850::TaskManager.Task::(_setError) Task=`04c8d8de-c8fe-4ecf-9651-c837278de8c3`::Unexpected error
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/task.py", line 857, in _run
    return fn(*args, **kargs)
  File "/usr/share/vdsm/logUtils.py", line 45, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/storage/hsm.py", line 2562, in getStoragePoolInfo
    if domInfo[sdUUID]['isoprefix']:
KeyError: 'isoprefix'

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

How reproducible:

Steps to Reproduce:
1. put one of the domain in maintenance

Actual results:
The entire storage pool remains in the contending state (unusable) and the SPM moves from one host to another. No further action is allowed.

Expected results:
The selected storage domain should be moved to maintenance and the rest of the pool should be still usable.
Comment 4 Leonid Natapov 2013-11-24 08:55:16 EST
si24.1 fixed.
Comment 5 Charlie 2013-11-27 19:29:23 EST
This bug is currently attached to errata RHBA-2013:15291. If this change is not to be documented in the text for this errata please either remove it from the errata, set the requires_doc_text flag to 
minus (-), or leave a "Doc Text" value of "--no tech note required" if you do not have permission to alter the flag.

Otherwise to aid in the development of relevant and accurate release documentation, please fill out the "Doc Text" field above with these four (4) pieces of information:

* Cause: What actions or circumstances cause this bug to present.
* Consequence: What happens when the bug presents.
* Fix: What was done to fix the bug.
* Result: What now happens when the actions or circumstances above occur. (NB: this is not the same as 'the bug doesn't present anymore')

Once filled out, please set the "Doc Type" field to the appropriate value for the type of change made and submit your edits to the bug.

For further details on the Cause, Consequence, Fix, Result format please refer to:


Thanks in advance.
Comment 6 errata-xmlrpc 2014-01-21 11:18:45 EST
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.


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