2011-07-08 12:15:08 -0400, Chris Mason: [...] > I'd definitely try without -o compress_force. [...] Just started that over the night. I'm running a "dstat -df" at the same time and I'm seeing substantive amount of disk writes on the disks that hold the source FS (and I'm rsyncing from read-only snapshot subvolumes in case you're thinking of atimes) almost more than onto the drive holding the target FS!? --dsk/sda-- --dsk/sdb-- --dsk/sdc-- --dsk/sdd-- read writ: read writ: read writ: read writ 1000k 0 : 580k 0 :2176k 0 : 0 0 1192k 0 : 76k 0 : 988k 0 : 0 0 436k 0 : 364k 0 :1984k 0 : 0 33M 824k 0 : 812k 0 :4276k 0 : 0 0 3004k 0 :2868k 0 :5488k 0 : 0 0 796k 564k: 640k 25M:2284k 4600k: 0 0 108k 0 : 68k 23M: 648k 35M: 0 0 1712k 12k:1644k 12k:2476k 7864k: 0 0 732k 0 : 620k 0 :3192k 0 : 0 0 1148k 0 :1116k 0 :3532k 0 : 0 19M 1392k 0 :1380k 0 :4416k 0 : 0 7056k 1336k 0 :1212k 0 :6664k 0 : 0 3148k 820k 0 : 784k 0 :4528k 0 : 0 48M 1336k 0 :1340k 0 :3964k 0 : 0 8996k 1528k 0 :1280k 0 :2908k 0 : 0 0 1352k 0 :1216k 0 :3880k 0 : 0 0 864k 0 : 888k 0 :1684k 0 : 0 0 1268k 0 :1208k 0 :3072k 0 : 0 0 (source FS is on sda4+sdb+sdc, target on sdd, sda alsa has an ext4 FS) How can that be? Some garbage collection, background defrag or something like that? But then, if I stop the rsync, those writes stop as well. -- Stephane -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
