I made the leap to a btrfs root partition for my netbook with a fresh install of F15.
Everything seems to work fine and I have done some fair amount of Googling for information and come across https://btrfs.wiki.kernel.org/index.php/Getting_started which offers some great (incomplete) info but nothing Fedora specific. I have some questions about how to move forward to take advantage of btrfs: 1) Is there any kind of integration of btrfs with the included apps (For example: automatic snapshots before yum updates allowing easy rollbacks, deja dup backing up a btrfs snapshot so that currently changing data doesn't affect the backup process, a kiosk mode that rolls back a home directory to a known state after logout, etc.) or is that the next step to take advantage of all the new bells and whistles and F15 is just a test-btrfs-as-a-ext4-replacement release? 2) I see (using 'mount') that the root is btrfs along with some (what appear to be) subvolumes for /tmp, /var/tmp and /home yet 'btrfs device scan' shows no information. Does 'btrfs device scan' only scan unmounted devices or is this a bug? 3) I have read at Phoronix that using the transparent compression offers a fair performance gain ( http://www.phoronix.com/scan.php?page=article&item=btrfs_space_cache&num=1 ) with mixed results when combining that with space cache. Has the space cache+compression degradation seen in some benchmarks been fixed in F15? Also, is using transparent compression simply a matter of adding the correct mount flag to /etc/fstab or is there a more complex conversion process to be followed that needs to be done offline? 4) Since this is a netbook with a modest Atom processor, would enabling transparent compression just load the CPU such that any performance is negated or cause significant battery drain? Thank you for any experience you have to offer. /Mike -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
