On Sat, May 09, 2015 at 08:32:37PM +0200, Stefano Zacchiroli wrote: > And while we are at it: is the persistent journal backup-safe? or does > the binary format get in the way, implying risks to backup incomplete / > corrupted log entries?
Starting from version 219, it's not, at least on btrfs. The culprit is FS_NOCOW, used intentionally for a minor speed increase. It does break all backup schemes that rely on btrfs functionality (same-disk snapshots, btrfs-send/receive). Besides breaking CoW, it also degrades behaviour for unclean shutdowns. This flag should never be set other than by the sysadmin. -- // If you believe in so-called "intellectual property", please immediately // cease using counterfeit alphabets. Instead, contact the nearest temple // of Amon, whose priests will provide you with scribal services for all // your writing needs, for Reasonable and Non-Discriminatory prices. -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150511104052.ga13...@angband.pl
