Comments on: Lessfs-1.3.1 has been released

By: Gianni

Gianni — Tue, 01 Feb 2011 22:40:26 +0000

sorry cut & paste left some part

root@dedup:~/lessfs-1.3.1# diff lib_tc.c lib_tc.c.orig
1299,1301d1298
< float dedup=0;
< float orig=0;
<
1318,1319d1314
stbuf.st_size;
real_size;
1325,1326d1319
stbuf.st_size;
real_size;
1336,1337d1328
< lines[count++] = as_sprintf("File Dedup Original Perc\n");
< lines[count++] = as_sprintf("%i %.0f %.0f %3.2f\n",count,dedup,orig,dedup/orig*100);

root@dedup:~/lessfs-1.3.1# tail -2 /dedup/.lessfs/lessfs_stats
File Dedup Original Perc
93 59168874496 61916155904 95.56

By: Gianni

Gianni — Tue, 01 Feb 2011 22:37:32 +0000

Good night!!!

I’m testing lessfs with some mailbox: too much little file so that my little script to get stat from lessfs_stat became very slow…so i tried to make a “little patch” for lib_tc.c just to describe my idea:

After this mod i add 2 line at bottom of lessfs_stat so we just need to read that 2 line to get some fast summary:

root@dedup:~/lessfs-1.3.1# tail -2 /dedup/.lessfs/lessfs_stats
File Dedup Original Perc
93 59168874496 61916155904 95.56

Perhaps it should be better to put that info in some other file or produce in some other way i dont know.

This is just for suggest my idea

Happy dedup
Gianni

By: richard

richard — Tue, 01 Feb 2011 19:36:38 +0000

When I would do a mklessfs and then a service lessfs start, nothing would happen. I haven’t tried making a lessfs.cfg-hamsterdb in /etc.

By: John

John — Sun, 30 Jan 2011 07:31:11 +0000

Also, I built a spec file for hamsterdb tonight, if anyone is interested.

By: Nix

Nix — Fri, 28 Jan 2011 21:58:40 +0000

Turning off transactions while hamsterdb is active yields a fatal error:

start_flush_commit : failed to commit transaction() returned error -8: Invalid parameter

because txn was never initialized, but you unconditionally call ham_txn_commit() and ham_txn_begin() in commit_transactions() without checking config->transactions first.

(I’m not clear if this option is even *meant* to work with hamsterdb, though.)

By: John

John — Fri, 28 Jan 2011 01:39:34 +0000

Instead of rebuilding your tarball, consider adding a line like this in the %build section of the spec file:

cp etc/lessfs.cfg-hamsterdb etc/lessfs.cfg

By: Richard

Richard — Wed, 19 Jan 2011 19:33:41 +0000

I can’t seem to get lessfs to start. I’m going to try testing with 1.2.2.6

By: Richard

Richard — Wed, 19 Jan 2011 18:56:04 +0000

sorry to hog the forum but are -o kernel_cache,negative_timeout=0,entry_timeout=0,attr_timeout=0,use_ino,readdir_ino,default_permissions,allow_other,big_writes,max_read=65536,max_write=65536
not needed anymore? they are not in the init.d/lessfs anymore.

By: Richard

Richard — Wed, 19 Jan 2011 17:54:14 +0000

Okay, after an rpmbuild –rebuild lessfs-1.3.1-1.src.rpm
went into SOURCES untarred the tgz, copied lessfs.cfg-hamsterdb to lessfs.cfg and tarred the directory and then did an rpmbuild –bb SPEC/lessfs.spec and build completed.

rpm -Uvh succeeded. Interesting, there is no hamsterdb dependency.

By: Richard

Richard — Wed, 19 Jan 2011 17:42:55 +0000

Darn src rpm is “failing” on Fedora12 because it can’t find the lessfs.cfg in /etc. I’m going to try to copying the lessfs.cfg-hamsterdb, but so far I haven’t found the right place. Probably going to have to untar then retar. I’ll post an update.