Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Dirk, Isn't there an error in your numbers ? You say that with you non-custered system you transfer 500GB in 400 seconds, which means more than a GB per second, and I can't figure out how you can achieve that with 100Mb link that can't run faster than roughly 10MB/s. Or did I miss something ? Regards, Pascal. Le 04/04/2012 12:15, Dirk Bonenkamp - ProActive a écrit : > Hi, > > First off all: I posted a similar thread on the OCFS2 mailing list, but > I didn't receive a lot of response. This list seems to be busier, maybe > more luck over here... > > I'm having trouble backing up a OCFS2 file system. I'm using rsync and I > find this way, way slower than rsyncing a 'traditional' file system. > > The OCFS2 filesytem lives on a double primary DRBD setup. DRBD runs on > hardware RAID6, dedicated bonded gigabyte NICs, I get a 160 Mb/s syncer > speed. Read and write speeds are OK on the file system. > > Some figures: > > My OCFS2 filesystem is 3.7 Tb in size, 200 Gb is used, has about 1.5 > million files on it in 95 directories. About 3000 new files are added > each day, few files are changed. > > Rsyncing (directlty to the rsync daemon, no ssh shell overhead) this > filesystem over a Gb connection takes 70 minutes: > > Number of files: 1495981 > Number of files transferred: 2944 > Total file size: 201701039047 bytes > Total transferred file size: 613318155<tel:613318155> bytes > Literal data: 613292255<tel:613292255> bytes > Matched data: 25900 bytes > File list size: 24705311 > File list generation time: 0.001 seconds > File list transfer time: 0.000 seconds > Total bytes sent: 118692 > Total bytes received: 638195567<tel:638195567> > > sent 118692 bytes received 638195567<tel:638195567> bytes 154163.57 > bytes/sec > total size is 201701039047 speedup is 315.99 > > To compare this, I have a similar system (the old, non-HA system doing > the exact same thing), with an ext3 filesystem. This one holds 6.5 > million files, 500 Gb, about 10.000 new files a day. Backup done with > rsync through ssh on a 100 Mbit line takes 400 seconds. > > I'd like to know if somebody has encountered similar problems and maybe > has some tips / insights for me? > > Kind regards, > > Dirk > > > > > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user