i'm not an expert, but ill do my best to answer. replies interspersed below.
On Sun, Aug 8, 2010 at 8:57 PM, Evert Vorster evors...@gmail.com wrote:
Hi there.
Has anybody got a btrfs root filesystem that is running on a bare
block device? Would lilo be able to boot an initramfs that is living
on such a filesystem?
i haven't [ever] used lilo, but AFIAK no bootloader, with the
exception of maybe syslinux (extlinux), can boot from a btrfs device;
you won't have to worry about the initramfs, because the loader won't
even be able to find the kernel. you'll need a boot partition with a
filesystem supported by the loader.
What I intend to do is to erase all the partitions off my system, make
a btrfs volume on /dev/sda, and then just use subvolumes in stead of
partitions.
Is this folly?
not at all. this is what many of us would like to do, but we run into
the bootloader issues above.
Would having an initramfs be a boon or a bane in this endeavour?
a non-issue, as the bootloader cannot even get the kernel (unless your
booting the kernel/initramfs from a different device...)
Would lilo writing to the mbr of a device that is claimed by btrfs
break the file system?
i don't think so, but i'm not sure.
Do you need to have a partition table to have an MBR?
i just read about this recently. IIRC, the partition table is within
the 512 byte MBR; it's a 64 byte section starting at byte 446. so...
no :-)
C Anthony
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