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The sha1sum of a file may update the access time of that file.
If this happens while a brick is down, as it is forced in the
test, that brick doesn't get the update, getting out of sync.
When the brick is restarted, self-heal repairs the file, but
the test shouldn't access brick contents until self-heal finishes.
If this is combined with a kill of another brick before self-heal
has finished repairing the file, the volume could become inaccessible.
Since the purpose of these tests is only to check ec functionality
(there is another test that checks self-heal), the test that corrupts
the file has been removed.
Additional checks to validate the state of the volume have been added
to avoid some timing issues.
This is a backport of http://review.gluster.org/8892/
BUG: 1149118
Change-Id: I8a40b7f07fc8ecd2c721bad1bcdd351dd8504155
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/8902
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
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This patch implements the Galois Field multiplications using pure C
code without any assembler support. This makes the ec xlator portable
to other architectures.
In the future it will be possible to use an optimized implementation
of the multiplications using architecture dependent facilities (it
will be automatically detected and configured). To allow bricks with
different machine word sizes to be able to work seamlessly in the
same volume, the minimum fragment length to be stored in any brick
has been fixed to 512 bytes. Otherwise, different implementations
will corrupt the data (SSE2 used 128 bytes, while new implementation
would have used 64).
This patch also removes the '-msse2' option added on patch
http://review.gluster.org/8396/
This is a backport of http://review.gluster.org/8413/
Change-Id: Iaf6e4ef3dcfda6c68f48f16ca46fc4fb61a215f4
BUG: 1140845
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/8701
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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An 'ls -a1' on an empty volume seems to return 3 entries instead
of the expected 2 ('.' and '..') in the build servers. I changed
the test to a simple 'stat', which is enough and more reliable.
This is a backport of http://review.gluster.org/8313.
Change-Id: I12d0f47394ad378b40fc9b86507cdb3543f99970
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/8313
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/8417
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Two new options have been added to the 'create' command of the cli
interface:
disperse [<count>] redundancy <count>
Both are optional. A dispersed volume is created by specifying, at
least, one of them. If 'disperse' is missing or it's present but
'<count>' does not, the number of bricks enumerated in the command
line is taken as the disperse count.
If 'redundancy' is missing, the lowest optimal value is assumed. A
configuration is considered optimal (for most workloads) when the
disperse count - redundancy count is a power of 2. If the resulting
redundancy is 1, the volume is created normally, but if it's greater
than 1, a warning is shown to the user and he/she must answer yes/no
to continue volume creation. If there isn't any optimal value for
the given number of bricks, a warning is also shown and, if the user
accepts, a redundancy of 1 is used.
If 'redundancy' is specified and the resulting volume is not optimal,
another warning is shown to the user.
A distributed-disperse volume can be created using a number of bricks
multiple of the disperse count.
Change-Id: Iab93efbe78e905cdb91f54f3741599f7ea6645e4
BUG: 1118629
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/7782
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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