OpenAFS Master Repository branch, master, updated. openafs-devel-1_5_76-4277-g21a8579

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit 21a85792c44e2145eea6d10dc31d58028ba933b8
Author: Michael Meffie <mmeffie@sinenomine.net>
Date:   Tue Feb 18 13:59:59 2014 -0500

    volser: log message for cross-device link errors
    
    Add a log entry to the volume server to help diagnose those pesky
    'Invalid cross-link device' errors returned by vos, which occur when
    a clone volume is located in a different partition than the parent
    read-write volume, or when a read-only volume is on the incorrect
    partition on the server.
    
    With this change, a new log entry is added when the volume server
    fails to create a clone or a read-write volume because a volume with
    the target volume id already exists on a different partition.  For a
    clone volume, this would be a different partition than the
    read-write volume. For a read-only volume, this would be a different
    partition than indicated in the vldb.
    
    Examples:
    
    Volume foobar is on /vicepb, but foobar.backup is incorrectly on
    partition /vicepa.
    
    $ vos backup foobar
    Failed to clone the volume 536870934
    : Invalid cross-device link
    
    VolserLog:
     VCreateVolume: volume 536870936 for parent 536870934 found on /vicepa; unable to create volume on /vicepb.
     1 Volser: Clone: Couldn't create new volume 536870936 for parent 536870934; clone aborted
     ...
    
    The vldb indicates a read-only volume should be on /vicepa on a
    remote site, but the actual volume is on /vicepb.
    
    $ vos release xyzzy
    Failed to create the ro volume: : Input/output error
    The volume 536870921 could not be released to the following 1 sites:
    	                             mantis /vicepa
    VOLSER: release could not be completed
    ...
    
    VolserLog on mantis:
     VCreateVolume: volume 536870922 for parent 536870921 found on /vicepb; unable to create volume on /vicepa.
     ...
    
    Change-Id: Iaa471c46059d598a5095d59580e3b0b8ac6e1992
    Reviewed-on: http://gerrit.openafs.org/10849
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Perry Ruiter <pruiter@sinenomine.net>
    Reviewed-by: D Brashear <shadow@your-file-system.com>

 src/vol/vutil.c       |    6 +++++-
 src/volser/volprocs.c |    3 ++-
 2 files changed, 7 insertions(+), 2 deletions(-)

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