On 15 March, 2009 - Harry Putnam sent me these 1,7K bytes: > > Summary: > I'm doing something wrong here but not sure what. Put a 250gb and > 500gb disk into zpool but only 229gb is available > > I have a 250 gb disk and a 500gb disk installed and configured as > raidz1. both have efi labels when viewed with format/fdisk. > > fdisk c3d1: > Total disk size is 30401 cylinders > Cylinder size is 16065 (512 byte) blocks > > Cylinders > Partition Status Type Start End Length % > ========= ====== ============ ===== === ====== === > 1 EFI 0 30401 30402 100 > > fdisk c4d0: > Total disk size is 60800 cylinders > Cylinder size is 16065 (512 byte) blocks > > Cylinders > Partition Status Type Start End Length % > ========= ====== ============ ===== === ====== === > 1 EFI 0 60800 60801 100 > > > After creating the zpool with: > zpool create zbk raidz1 c3d1(250gb) c4d0(500gb) (with no errors) > > zpool status zbk > pool: zbk > state: ONLINE > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > zbk ONLINE 0 0 0 > raidz1 ONLINE 0 0 0 > c3d1 ONLINE 0 0 0 > c4d0 ONLINE 0 0 0 > > errors: No known data errors > > > But then df -h shows only 229gb available > > df -h /zbk > Filesystem Size Used Avail Use% Mounted on > zbk 229G 22K 229G 1% /zbk
You are using raidz1 (which is less useful when you just have 2 disks, use a mirror instead for same safety but higher performance) which can't use more space than the smallest disk.. so half of the larger disk is unused in this case. 250 vs 229GB is 1000 vs 1024 when counting MB/kB etc. For redundant storage, use disks of the same size.. If you just want to add up both disks together (and lose all data if one disk goes belly up), create it with: zpool create zkb c3d1 c4d0 I seem to recall that ZFS should complain and point out that they are of (major) different size.. But apparently not.. /Tomas -- Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/ |- Student at Computing Science, University of Umeå `- Sysadmin at {cs,acc}.umu.se _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
