Running "mdb_stat testdb" gives me the same "Resource Busy" error.
It looks like mdb.c:2941 is checking if the return address from mmap() is the same as the hint passed in. Is there a problem with just using the mmap() return address? It looks like the mmap() is successful but just allocating to a different place.
Ben Johnson wrote:
I posted this to openldap-bugs but I didn't see it actually posted to the archive so I'll try in openldap-technical. I have LMDB integrated and it's working smoothly except for this issue.
---- Original Message ----
I'm an author of an open source database called Sky (http://skydb.io/) and I'm interested in porting the backend off LevelDB and move it over to LMDB. I pulled down the LMDB code using the instructions on Ferenc Szalai's gomdb (https://github.com/szferi/gomdb) README:
git clone -b mdb.master --single-branch git://git.openldap.org/openldap.git
When I ran "make test" against the code it seems to run through most of the tests but I get a "Resource Busy" error at one point. Here's the full output:
https://gist.github.com/benbjohnson/5628725
I'm running Mac OS X 10.8.3 and here's the output of my gcc -v:
MacOSX and FreeBSD are somewhat dicy. If you can run the failing command ("mdb_stat testdb") by hand, successfully, it's probably fine.
$ gcc -v Using built-in specs. Target: i686-apple-darwin11 Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1 Thread model: posix gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
Let me know if you need any other info from me.
Ben Johnson ben@skylandlabs.com <mailto:ben@skylandlabs.com>
Ben Johnson ben@skylandlabs.com <mailto:ben@skylandlabs.com>
-- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
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