I have two devices that used to be part of a now corrupt RAID10 configuration. When I try to reuse them to create a RAID1, it only uses about 1 third of the diskspace available.
# fdisk -l /dev/sdg
Disk /dev/sdg: 255 heads, 63 sectors, 8924 cylinders Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System /dev/sdg1 1 8924 71681998+ fd Linux raid autodetect
# fdisk -l /dev/sdn
Disk /dev/sdn: 255 heads, 63 sectors, 8924 cylinders Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System /dev/sdn1 1 8924 71681998+ fd Linux raid autodetect
# mdadm --create --verbose /dev/md5 --level=1 --raid-devices=2 /dev/sdg /dev/sdn
mdadm: /dev/sdg appears to contain an ext2fs file system
size=419520K mtime=Mon May 2 17:04:04 2005
mdadm: /dev/sdn appears to contain an ext2fs file system
size=419520K mtime=Mon May 2 17:04:04 2005
mdadm: size set to 139904K
Continue creating array? n
If I try to add the --size option, even a size that is 139904K or less, it tells me the size is invalid:
# mdadm --create --verbose /dev/md5 --level=1 --raid-devices=2 /dev/sdg /dev/sdn --size=139904K
mdadm: invalid size: 139904K
I did reboot the system after fdisk'ing the devices.
Do I need to low-level format these devices to be able to reuse them?
Kind regards,
Herta
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