[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 12:07:43 PST 2018
#2764: corrupt data written to FCELL and DCELL rasters, hard to re-produce
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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 mmetz):
Replying to [comment:19 dylan]:
> Replying to [comment:18 dylan]:
> > Replying to [comment:17 mmetz]:
> >
> > > I have added more informative warnings and errors in trunk r72030,1.
> >
>
> Switched back to ZLIB compression and got the following error:
>
> {{{
> WARNING: ZLIB decompression error -3: data error
> ERROR: Error uncompressing fp raster data for row 2000 of <beam.206>:
error
> code -1
> }}}
>
> 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).
--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2764#comment:20>
GRASS GIS <https://grass.osgeo.org>
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