Re: [lmdb]

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 ben(a)skylandlabs.com <mailto:ben@skylandlabs.com> On May 23, 2013, at 4:55 PM, Howard Chu <hyc(a)symas.com <mailto:hyc@symas.com>> wrote: > 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(a)skylandlabs.com <mailto:ben@skylandlabs.com> <mailto:ben@skylandlabs.com> >> >> >> >> Ben Johnson >> ben(a)skylandlabs.com <mailto: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/