https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207838
Bug ID: 207838
Summary: [zfs] getcwd fails with permission denied under load
Product: Base System
Version: 10.2-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
I have a machine running a large number of nightly builds and unit tests every
night, maybe more than 8000 targets/tests in all compiler/flag combinations.
Every once in a while (on average maybe one per night) a random one of the
builds fails with:
gmake: getcwd: Permission denied
Also sometimes the build of the manual (a python process), fails with:
os.path.join(os.getcwd(), 'dummy'),
OSError: [Errno 13] Permission denied
The system:
FreeBSD <snip> 10.2-RELEASE FreeBSD 10.2-RELEASE #0 r286666: Wed Aug 12
15:26:37 UTC 2015 [email protected]:/usr/obj/usr/src/sys/GENERIC
amd64
The system is running a ZFS mirror on two SSDs and the relevant datasets are:
zssdroot/tmp on /tmp (zfs, local, noatime, nosuid, nfsv4acls)
zssdroot/nightly-builds on /usr/home/mi/h4nn3s/nightly-builds (zfs, local,
noatime, nfsv4acls)
-> the /tmp is not a tmpfs
The situation is a little annoying, because it permanently produces false
positives in the build matrix...
Anything I can do to help diagnose / fix this?
Thank you for your help!
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