Dear all, Having set up a software raid using the command: mdadm --create /dev/md0 --level=5 --raid-devices=4 /dev/hda5 /dev/hdb5 /dev/hdc5 /dev/hdd5 I can make an ext3 file system okay. If I then disable one drive using the command: mdadm /dev/md0 -f /dev/hdd5 -r /dev/hdd5 I seem to have some trouble in re-enabling the drive again using the command: mdadm /dev/md0 -a /dev/hdd5 or raidhotadd /dev/md0 /dev/hdd5 What is missing here to rebuild a degraded raid? The doc http://unthought.net/Software-RAID.HOWTO/Software-RAID.HOWTO.txt suggests it is possible to grow a raid0/5 file system, but I tried mdadm /dev/md0 -a /dev/hdd6 mdadm /dev/md0 -G resize2fs /dev/md0 they don't seem to do much to extend a raid 5 file system. Any idea? Many thanks.
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