I try to understand what exactly is trimmed in case of btrfs. Using installation in QEMU I see that host file size is about 9GB, allocated size in guest approximately matches it and used space in guest is 7.6GB. After some experimenting it looks like host size follows "Device allocated" value in "btrfs filesystem usage" which leads me to believe trim only considers space outside of allocated chunks. Is it correct? -- 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
