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1) pre_op_piggyback should always be decremented.
2) Move fsync resume to just after post_op.
3) fsync stub should be created from afr's local
not from the final response.
Change-Id: I220bb532eb03bea584292f4dd2e816ad0c3e0cf7
BUG: 927146
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4741
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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The changelogging scheme of AFR stores information about the state
of all replicas in all replicas (in the extended attribute of the
respective files on each server) in the form of 'pending counts'
of operations (effectively "dirty flags"). These xattrs are blindly
trusted while performing self-heal, and therefore utmost care has
to be taken while updating and maintaing them.
The most critical updation is the clearing of the pending counts
corresponding to the *other* server in the changelog of a given
server. Before clearing the pending count, we need durability
guarantee of the write which was performed on the other server.
To obtain such a guarantee, it may be necessary to explicitly
introduce an fsync() phase (if the file itself wasn't already
opened with O_SYNC).
This patch introduces the detection of unstable stable writes on
a file and issues explicit fsync() on the servers before performing
the POST-OP clearing of pending flags.
Change-Id: I2171b86a74ec91e40e5877eef0a4e7379578ecf7
BUG: 927146
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/4721
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Change-Id: I834fd5adab6e328ed106e413fc06e4280d1d24b2
BUG: 888174
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4497
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Change-Id: I307a77e90e1852f5e43d50e347f7b52468105389
BUG: 888174
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4447
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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