OpenAFS Master Repository branch, openafs-stable-1_8_x, updated. openafs-stable-1_8_0pre4-13-g1f10f08

[Gerrit Code Review]

The following commit has been merged in the openafs-stable-1_8_x branch:
commit 1f10f087264cb39a8354c0baf71eb1fa13071466
Author: Marcio Barbosa <mbarbosa@sinenomine.net>
Date:   Mon Aug 21 15:50:14 2017 -0400

    ubik: update ubik_dbVersion during SDISK_SendFile
    
    The ubik_dbVersion global represents the sync site's database version
    and it is mostly used by the remote sites for sanity checks. Currently,
    this global is updated when database changes are made on the sync site
    (SDISK_Commit or SDISK_SetVersion), as well as every time we vote "yes"
    for the sync-site in a beacon reply. Unfortunately, ubik_dbVersion is
    not updated when a copy of the sync site's database is received via
    DISK_SendFile, and it won't get updated until our next "yes" vote.
    During this window, the current database version will not match
    ubik_dbVersion. As a result, any write transaction during this time
    frame will fail on the remote site in question.
    
    To fix this problem, do not wait for the next beacon packet to update
    ubik_dbVersion when the sync site's database is received; just update
    it when we get the new database. Since no write transactions are
    allowed while the db is transferring, ubik_dbVersion can be safely
    updated.
    
    Reviewed-on: https://gerrit.openafs.org/12716
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
    Reviewed-by: Andrew Deason <adeason@dson.org>
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
    (cherry picked from commit 50c1d1088d2adcbb37b6a9d23fdd63617b1267be)
    
    Change-Id: Icbbe9efb9c8dab9ac69237380e824d4a523a53d3
    Reviewed-on: https://gerrit.openafs.org/12885
    Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

 src/ubik/remote.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

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