[GRASS-dev] [GRASS GIS] #2764: corrupt data written to FCELL and DCELL rasters, hard to re-produce

GRASS GIS trac at osgeo.org
Sat Jan 6 14:14:09 PST 2018


#2764: corrupt data written to FCELL and DCELL rasters, hard to re-produce
---------------------+-------------------------
  Reporter:  dylan   |      Owner:  grass-dev@…
      Type:  defect  |     Status:  new
  Priority:  normal  |  Milestone:  7.2.3
 Component:  Raster  |    Version:  unspecified
Resolution:          |   Keywords:
       CPU:  x86-64  |   Platform:  Linux
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Comment (by dylan):

 Replying to [comment:20 mmetz]:

 > > Could there be a lurking zlib compression bug in the code that only
 manifests during parallel invocation, or, when a very large number of rows
 are involved?
 >
 > I don't think so because
 >  1. you can't reproduce the error with a SSD
 >  2. Markus N can't reproduce the error with a SSD
 >  3. I can't reproduce the error with a SSD or an old spinning HDD (no
 RAID) or a NAS with spinning disks and software RAID 5
 >
 > Therefore I guess that something is wrong with your hard drive or there
 is a bug in your filesystem driver or there is a bug in your RAID
 management/configuration (in case you are still using a software RAID 1
 system).

 All good points, except that this iteration of errors have all been
 encountered while working on an ssd exclusively. Unless of course temp
 files are stored outside of the database/mapset.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2764#comment:21>
GRASS GIS <https://grass.osgeo.org>



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