#9460: Many Maxima-related doctest failures on sage.math
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Reporter: mpatel | Owner: mvngu
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.5
Component: doctest | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by drkirkby):
Replying to [comment:14 was]:
> > David Kirkby has had some suspicions about the way the disk storing
the home directories on
> > sage.math is set up. I wonder if that's causing the problem here.
>
> That could be. If true, it definitely means that we have a serious bug
in Sage -- not our filesystem. Here's my build setup:
>
> * I make a symlink: /home/wstein/build -> /scratch/wstein/build
> * I build in /home/wstein/build.
>
> William
In this case, since William's '/scratch', I would tend to agree the bug is
in Sage, not the file system. That said, I am not 100% sure, since you are
mounting a local file sysmem on an NFS one. If the NFS one can't be trust,
can the file system that's mounted on the NFS one? I would however tend to
think it would be OK, but I'm not 100% sure.
I know for a fact there are issues on 't2' with the NFS file system
exported by 'disk - it is clearly logged
{{{
Jul 6 12:06:06 t2 nfs: [ID 236337 kern.info] NOTICE: [NFS4][Server:
disk][Mntpt: /home]NFS op OP_SETATTR got error NFS4ERR_DELAY causing
recovery action NR_DELAY.
Jul 6 12:06:06 t2 nfs: [ID 236337 kern.info] NOTICE: [NFS4][Server:
disk][Mntpt: /home]NFS op OP_CLOSE got error NFS4ERR_STALE causing
recovery action NR_STALE.
Jul 6 12:06:06 t2 nfs: [ID 286389 kern.info] NOTICE: [NFS4][Server:
disk][Mntpt: /home]File ./palmieri/t2/sage-4.5.alpha3/local/bin/python2.6
(rnode_pt: 3003cad4018) was closed due to NFS recovery error on server
disk(failed to recover from NFS4ERR_STALE NFS4ERR_STALE)
Jul 6 12:06:06 t2 nfs: [ID 941083 kern.info] NOTICE: NFS4 FACT SHEET:
Jul 6 12:06:06 t2 Action: NR_STALE
Jul 6 12:06:06 t2 NFS4 error: NFS4ERR_STALE
Jul 6 13:25:28 t2 nfs: [ID 236337 kern.info] NOTICE: [NFS4][Server:
disk][Mntpt: /home]NFS op OP_CLOSE got error NFS4ERR_STALE causing
recovery action NR_STALE.
Jul 6 13:25:28 t2 nfs: [ID 286389 kern.info] NOTICE: [NFS4][Server:
disk][Mntpt: /home]File
./palmieri/t2/sage-4.5.alpha3/local/lib/gap-4.4.12/bin/gap.sh (rnode_pt:
6004da64c50) was closed due to NFS recovery error on server disk(failed to
recover from NFS4ERR_STALE NFS4ERR_STALE)
Jul 6 13:25:28 t2 nfs: [ID 941083 kern.info] NOTICE: NFS4 FACT SHEET:
Jul 6 13:25:28 t2 Action: NR_STALE
Jul 6 13:25:28 t2 NFS4 error: NFS4ERR_STALE
}}}
I would bet a pound to a penny this is a result of disabling the ZIL Log,
which is bad practice - see
[http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disabling_the_ZIL_.28Don.27t.29
Disabling the ZIL (Don't)]
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9460#comment:19>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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