LAB

%Raid ( a disk fail)

1.create raid5

#mdadm -C /dev/md0 -l 5 -n 3 /dev/sdb{5,6,7}
#mkfs.ext3 /dev/md0
#cat /proc/mdstat

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LAB:

Raid

1. create raid1

Disk /dev/sdb: 3253 MB, 3253469184 bytes
101 heads, 62 sectors/track, 1014 cylinders
Units = cylinders of 6262 * 512 = 3206144 bytes

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(2) Creating Logical Volumes

1. fdisk /dev/sdb (Partition Type: 8e)
2. pvcreate /dev/sdb2
3. vgcreate vg0 /dev/sdb2
4. lvcreate -L 100M -n data vg0
5. mkfs.ext3 /dev/vg0/data

%check
#pvs
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Advanced Filesystem Management

Tools:

#tar

#dump
#restore
Ex:
dump -0u -f /dev/nst0 /dev/hda2
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LAB

%create a new filesystem

#fdisk -l /dev/sdb

Disk /dev/sdb: 3253 MB, 3253469184 bytes
101 heads, 62 sectors/track, 1014 cylinders
Units = cylinders of 6262 * 512 = 3206144 bytes

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