Le 27/09/2015 17:34, Lionel Bouton a écrit : > [...] > It's not clear to me that "btrfs fi defrag <file>" can't interfere with > another process trying to use the file. I assume basic reading and > writing is OK but there might be restrictions on unlinking/locking/using > other ioctls... Are there any I should be aware of and should look for > in Ceph OSDs? This is on a 3.8.19 kernel (with Gentoo patches which > don't touch BTRFS sources) with btrfs-progs 4.0.1. We have 5 servers on > our storage network : 2 are running a 4.0.5 kernel and 3 are running > 3.8.19. The 3.8.19 servers are waiting for an opportunity to reboot on > 4.0.5 (or better if we have the time to test a more recent kernel before > rebooting : 4.1.8 and 4.2.1 are our candidates for testing right now). Apparently this isn't the problem : we just had another similar Ceph OSD crash without any concurrent defragmentation going on. Best regards, Lionel Bouton -- 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
