corrupt file on mirror?

corrupt file on mirror?

[Ben Woodcroft]

Hi,

I just came across this, not sure what to make of it:

Found valid signature for 
/gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
From 
https://mirror.hydra.gnu.org/guix/nar/gzip/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
Downloading dhc2iy...-gcc-5.4.0-lib (30.1MiB installed)...
  gcc-5.4.0-lib 189KiB/s 00:01 | 187KiB transferred
gzip: stdin: invalid compressed data--crc error

gzip: stdin: invalid compressed data--length error
guix substitute: error: corrupt input while restoring 
'/gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib/lib/gcc/x86_64-unknown-linux-gnu/5.4.0/include/cilk/cilk_api.h' 
from #{read pipe}#

Any ideas?
Thanks, ben

Re: corrupt file on mirror?

[Leo Famulari]

On Thu, Apr 06, 2017 at 01:29:21PM +1000, Ben Woodcroft wrote:
> Hi,
> 
> I just came across this, not sure what to make of it:
> 
> Found valid signature for
> /gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
> From https://mirror.hydra.gnu.org/guix/nar/gzip/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
> Downloading dhc2iy...-gcc-5.4.0-lib (30.1MiB installed)...
>  gcc-5.4.0-lib 189KiB/s 00:01 | 187KiB transferred
> gzip: stdin: invalid compressed data--crc error
> 
> gzip: stdin: invalid compressed data--length error
> guix substitute: error: corrupt input while restoring '/gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib/lib/gcc/x86_64-unknown-linux-gnu/5.4.0/include/cilk/cilk_api.h'
> from #{read pipe}#

I've been seeing lots of gzip errors on my private mirror, too, but so
far I haven't investigated.

Re: corrupt file on mirror?

[Ludovic Courtès]

Hello,

Leo Famulari <leo@famulari.name> skribis:

> On Thu, Apr 06, 2017 at 01:29:21PM +1000, Ben Woodcroft wrote:
>> Hi,
>> 
>> I just came across this, not sure what to make of it:
>> 
>> Found valid signature for
>> /gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
>> From https://mirror.hydra.gnu.org/guix/nar/gzip/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib
>> Downloading dhc2iy...-gcc-5.4.0-lib (30.1MiB installed)...
>>  gcc-5.4.0-lib 189KiB/s 00:01 | 187KiB transferred
>> gzip: stdin: invalid compressed data--crc error
>> 
>> gzip: stdin: invalid compressed data--length error
>> guix substitute: error: corrupt input while restoring '/gnu/store/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib/lib/gcc/x86_64-unknown-linux-gnu/5.4.0/include/cilk/cilk_api.h'
>> from #{read pipe}#

Not sure if someone intervened but this works for me:

  wget -O - https://mirror.hydra.gnu.org/guix/nar/gzip/dhc2iy059hi91fk55dcv79z09kp6500y-gcc-5.4.0-lib |gunzip |wc -c

The error you were showing suggests a truncated file, which indeed
happens occasionally when hydra.gnu.org is overloaded.

I’ve proposed a couple of improvements to ‘guix publish’ to address this
and related issues:

  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=26201#71

Not implemented yet, but feedback and suggestions are welcome!

Thanks,
Ludo’.