=== Configurazione dello storage con lvm2 ===
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__Situazione__\\
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12 dischi  ognuno da 500GB come di seguito divisi:\\
10 dischi (2 catene RAID5)\\
2 spare (1 per catena)\\
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__lvm2__\\
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/home 200GB\\
/data 900GB\\
/scratch_gl 900GB\\
6 volumi fisici, 3 x catena dimensionati come sopra\\
1 unico volume gruppo\\
3 volumi logici in modo da unire 2 volumi fisici di 2 catene diverse\\
es.: /home 400GB (200 di una catena e 200 dell'altra)\\
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__Nomi__\\
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c1d0 prima catena RAID5\\
c1d1 seconda catena RAID5\\
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__Comandi__\\
cd /root\\
sfdisk -d /dev/cciss/c1d0 > c1d0.out\\
cat c1d0.out | sfdisk /dev/cciss/c1d1 (clonato la prima catena sulla seconda)\\
pvcreate /dev/cciss/c1d0p1 /dev/cciss/c1d0p2 /dev/cciss/c1d0p3 /dev/cciss/ c1d1p1 /dev/cciss/c1d1p2 /dev/cciss/c1d1p3\\
vgcreate vg_storage /dev/cciss/c1d0p1 /dev/cciss/c1d0p2 /dev/cciss/c1d0p3 /dev/cciss/ c1d1p1 /dev/cciss/c1d1p2 /dev/cciss/c1d1p3\\
lvcreate -n lv_home vg_storage -l  xxxxx /dev/cciss/c1d0p1 /dev/cciss/c1d1p1\\
...\\
mkfs.ext3 /dev/vg_storage/lv_home\\
mkfs.ext3 /dev/vg_storage/lv_data\\
mkfs.ext3 /dev/vg_storage/lv_scratch_gl\\
(eventualmente fsck /dev/vg_storage/lv_home)\\
/etc/fstab con le nuove partizione lvm:
/dev/vg_storage/lv_home		        /export/home           	ext3    defaults,usrquota 0 0\\
/dev/vg_storage/lv_data 		/data                   	ext3    defaults,usrquota 0 0\\
/dev/vg_storage/lv_scratch_gl   	/scratch_gl     		ext3    defaults,usrquota 0 0\\
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mount /export/home\\
mount /data\\
mount /scratch_gl\\
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/etc/init.d/autofs start\\
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