I have vmware and virtualbox VMs on btrfs SSD. I read in https://btrfs.wiki.kernel.org/index.php/SysadminGuide#When_To_Make_Subvolumes certain types of data (databases, VM images and similar typically big files that are randomly written internally) may require CoW to be disabled for them. So for example such areas could be placed in a subvolume, that is always mounted with the option "nodatacow". Does this apply to SSDs, too? -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher@xxxxxxxxxxxxxxxxxxxx Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<20161125082840.GA32711@xxxxxxxxxxxxxxxxxxxx> -- 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
