Hi, I have a btrfs file system /b1 on /dev/sdb with 2 subvolumes and 2 snapshots of them. I have written a code which takes 2 disks as input source: /dev/sdb and destination as /dev/sdc and copies entire disk in 512 byte chunks to desination /dev/sdc. my source btrfs /dev/sdb is mounted /b1 currently and mount command show the same. I ran above program and it is successful. and now everything in /dev/sdb is copied to /dev/sdc but after this when I run mount command at CLI, i am seeing strange behaviour and output show /dev/sdc is mounted on /b1. Some how it changes device from /dev/sdb to /dev/sdc on the fliy. I also tried to cd to /b1 (which make /b1 is in use) and ran same program, still after copy from /dev/sdb to /dev/sdc, mount shows /dev/sdc is mounted on /b1 what could be the reason for this? does btrfs do any polling or something? since /dev/sdb and /dev/sdc contains same data, i can mount /dev/sdc independently. -- 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
