Robert White
2014-Oct-23 22:27 UTC
Mounting(multiply)? Options(stored)? Options(barriers)?
I've got several questions about mount features that I've been unable to find definitive answers for. ITEM: So there are some mount options that I'd like to be able to pin onto a media like compress=lzo on a thumb drive I expect to get crowded. Is there a feature equivalent to the -o option to tune2fs either present or planned? ITEM: Is there a means (or a plan for a means) to use a subvol as a means to prevent/change active features from propigating to a subdirectory? An example would be a means to turn off autodefrag or compression for a subvolume full of virtual machine images, whilest having it active for the bulk of the filesystem. ITEM: If I make one file system and have subvols /__System /home and /VMs and mount those as / /home and /usr/local/VMs respectively, with differing feature options for each, will those options be separately honored or will the last-mounted or first-mounted subvolume's options take dominant effect? Compression, auto-defragment, and commit interval being of primary concern. ITEM: Is there a no-compress attribute (or something similar) for negating compress= mount options on specific files or directories? How about a no-autodefrag? (I'm about to set up a system and some standards that may last many years and I'm trying to find the reasonable bounds of where I need to do hard partitioning.) --Rob. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html