Hallo, Stephane,
Du meintest am 11.04.11:
> What's the implication of having disks of differing sizes? Does
> that mean that the extra space on larger disks is lost?
Seems to work.
I've tried:
/dev/sda 140 GByte
/dev/sdb 140 GByte
/dev/sdc 70 GByte
mkfs.btrfs -d raid0 -m raid1 /dev/sdb1 /dev/sdc1
mounted, more than 140 GByte free
Filled with more than 140 GByte (/dev/sdc1 was full to the brim)
btrfs device add /dev/sda1 ...
btrfs filesystem balance ...
Needed many hours, but then more than 210 GByte were usable.
Filled up to about 220 GByte; /dev/sdc1 was again full to the brim
btrfs device delete /dev/sdc1
umount
mount
All looks as expected, only the 2 bigger devices are seen, and they
contain the expected files.
And that looks good: my major interest in btrfs is working in that way -
adding a bigger device, deleting a smaller device.
Kernel 2.6.38.1
btrfs from november 2010
Only the values shown with "df" and "btrfs filesystem df" need getting
used to; maybe "available" has to be seen as "at least available".
Viele Gruesse!
Helmut
--
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
