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<div>I've got a PMR open about this ... Will email you the number directly.</div>
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<div>Looking at the man page for ld.gold, it looks to set '<b style="color: rgb(51, 51, 51); font-family: inherit; font-size: 12px; orphans: 2; widows: 2;">--posix-fallocate'</b> by default. In fact, testing with '-Xlinker -no-posix-fallocate' does indeed make
the code compile.</div>
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<div>Simon</div>
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<span style="font-weight:bold">From: </span>"<a href="mailto:vpuvvada@in.ibm.com">vpuvvada@in.ibm.com</a>" <<a href="mailto:vpuvvada@in.ibm.com">vpuvvada@in.ibm.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, 23 August 2017 at 13:36<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>" <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>>, Simon Thompson <<a href="mailto:S.J.Thompson@bham.ac.uk">S.J.Thompson@bham.ac.uk</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [gpfsug-discuss] AFM weirdness<br>
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<div><font size="2" face="sans-serif">I believe this error is result of preallocation failure, but traces are needed to confirm this. AFM caching modes does not support preallocation of blocks (ex. using fallocate()). This feature is supported only in AFM
DR.</font><br>
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<font size="2" face="sans-serif">~Venkat (<a href="mailto:vpuvvada@in.ibm.com">vpuvvada@in.ibm.com</a>)</font><br>
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<font size="1" color="#5f5f5f" face="sans-serif">From: </font><font size="1" face="sans-serif">"Simon Thompson (IT Research Support)" <<a href="mailto:S.J.Thompson@bham.ac.uk">S.J.Thompson@bham.ac.uk</a>></font><br>
<font size="1" color="#5f5f5f" face="sans-serif">To: </font><font size="1" face="sans-serif">gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>></font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Date: </font><font size="1" face="sans-serif">08/23/2017 03:48 PM</font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Subject: </font><font size="1" face="sans-serif">Re: [gpfsug-discuss] AFM weirdness</font><br>
<font size="1" color="#5f5f5f" face="sans-serif">Sent by: </font><font size="1" face="sans-serif"><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></font><br>
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<tt><font size="2">OK so I checked and if I run directly on the "AFM" FS in a different "non<br>
AFM" directory, it works fine, so its something AFM related ...<br>
<br>
Simon<br>
<br>
On 23/08/2017, 11:11, "<a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a> on behalf<br>
of Simon Thompson (IT Research Support)"<br>
<<a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a> on behalf of<br>
<a href="mailto:S.J.Thompson@bham.ac.uk">S.J.Thompson@bham.ac.uk</a>> wrote:<br>
<br>
>We're using an AFM cache from our HPC nodes to access data in another GPFS<br>
>cluster, mostly this seems to be working fine, but we've just come across<br>
>an interesting problem with a user using gfortran from the GCC 5.2.0<br>
>toolset.<br>
><br>
>When linking their code, they get a "no space left on device" error back<br>
>from the linker. If we do this on a node that mounts the file-system<br>
>directly (I.e. Not via AFM cache), then it works fine.<br>
><br>
>We tried with GCC 4.5 based tools and it works OK, but the difference<br>
>there is that 4.x uses ld and 5x uses ld.gold.<br>
><br>
>If we strike the ld.gold when using AFM, we see:<br>
><br>
>stat("program", {st_mode=S_IFREG|0775, st_size=248480, ...}) = 0<br>
>unlink("program") = 0<br>
>open("program", O_RDWR|O_CREAT|O_TRUNC|O_CLOEXEC, 0777) = 30<br>
>fstat(30, {st_mode=S_IFREG|0775, st_size=0, ...}) = 0<br>
>fallocate(30, 0, 0, 248480) = -1 ENOSPC (No space left on<br>
>device)<br>
><br>
><br>
><br>
>Vs when running directly on the file-system:<br>
>stat("program", {st_mode=S_IFREG|0775, st_size=248480, ...}) = 0<br>
>unlink("program") = 0<br>
>open("program", O_RDWR|O_CREAT|O_TRUNC|O_CLOEXEC, 0777) = 30<br>
>fstat(30, {st_mode=S_IFREG|0775, st_size=0, ...}) = 0<br>
>fallocate(30, 0, 0, 248480) = 0<br>
><br>
><br>
><br>
>Anyone seen anything like this before?<br>
><br>
>... Actually I'm about to go off and see if its a function of AFM, or<br>
>maybe something to do with the FS in use (I.e. Make a local directory on<br>
>the filesystem on the "AFM" FS and see if that works ...)<br>
><br>
>Thanks<br>
><br>
>Simon<br>
><br>
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