On 09/26/2015 08:40 PM, Xen wrote:
I think LVM can actually do most or everything of what BtrFS can do at the filesystem level. Not sure. But it seems that way. And I think it is more elegant and less complicated.
LVM is a storage manager. You can think of it as a substitute for partitioning. If you partition with the conventional tools like fdisk and family then the partitions are 'hard', they are at the BIOS level. While there are kludges like gparted, the concept is that you manage the hard partitions outside of the OS, Granted that most of us do use fsisk to partition, perhaps as BOOT, SWAP and now since grub/grub2 can handle it, put everything else in a LVM logical partition, which is 'software defined'. Oh, right, its a trend; its sort of a virtualization of disk space, like we have virtual networks . Many people feel its humbug and I can't blame them; its certainly 'deferred design'. But LVM is NOT, repeat NOT, a file system. Contrariwise BtrFS *is* a storage manager, a complete storage manager. All the way down from file to device layout management. You *can* put it on a disk with no partitioning and it manages the space and delivers the file system view. It reminds me of the old (but still in use) IBM CICS, where everything was within CICS, teleprocessing (what we think of as telnet, ssh), data transfer (what we think of as UUCP or FTP) database management and more. With LVM you can choose what file system goes into the logical partitions. There is no such analogue for BtrFS. One <strike>Ring</strike> filesystem to rule them all. And its assimilating like the Borg. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org