2.1. SVM

Display status for metadevice or hot spare pool

 metastat
 metastat -p

Affiche les erreurs et les LV des disques

 metastat -a ou -c 

Supprimer les lv des disques

 metaclear

Il arrive qu'un LV soit en maintenance:

 metastat | more
 d90: Mirror
   Submirror 0: d91
     State: Needs maintenance
   Submirror 1: d92
     State: Needs maintenance
   Pass: 1
   Read option: roundrobin (default)
   Write option: parallel (default)
   Size: 143349312 blocks (68 GB)

 #metastat -c (n'existe pas en solaris 8)
 d284             p   34GB d270
 d283             p  4.0GB d270
 d282             p  500MB d270
 d281             p   10GB d270
 d280             p  1.5GB d270
     d270         m   50GB d271
         d271     s   50GB c1t1d0s7
 d84              p   34GB d70
 d83              p  4.0GB d70
 d82              p  500MB d70
 d81              p   10GB d70
 d80              p  1.5GB d70
     d70          m   50GB d71
         d71      s   50GB c1t0d0s7
 d90              m   68GB d91 (maint) d92 (maint)
     d91          s   68GB c1t2d0s6 (last-erred)
     d92          s   68GB c1t3d0s6

Pour voir si le disque est HS faire un format --> analyze --> read on the c1t0d0 disk.

Sinon un metasync peut corriger le problème si le disque n'est pas HS

 #metasync d90

Afficher la table des slices (table des partitions, slice 3)

 #metadb

Mettre en miroir deux luns

Partitionner le 2eme disque à l'identique :

 prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s /dev/rdsk/disque2

Création des metadb de sauvegarde (penser à créer la partition)

 metadb -fac 3 c0t0d0s7 c0t1d0s7

Editer /etc/lvm/md.tab (fichier de configuration du raid logiciel) après modif :

 metainit -af (initialise le miroir)
 metastat (stats du miroir) metaroot d0

editer le fichier /etc/vfstab pour configurer les autres partitions puis reboot

 metattach d0 d2

---

Créer et mettre en mirroir des slices:

Create under c0t0d0s5 four different soft partitions:

d31, d32, d33, d34 as 6GB, 7GB, 4GB and 7GB:
# metainit d31 -p c0t0d0s5 5g
d31: Soft Partition is setup

# metainit d32 -p c0t0d0s5 7500m
d32: Soft Partition is setup

# metainit d33 -p c0t0d0s5 4400m
d33: Soft Partition is setup

# metainit d34 -p c0t0d0s5 7500m
d34: Soft Partition is setup

To create a stripe you should create the exact four slices to the second disk, c0t2d0:

# metainit d41 -p c0t2d0s5 5g
d41: Soft Partition is setup

# metainit d42 -p c0t2d0s5 7500m
d42: Soft Partition is setup

# metainit d43 -p c0t2d0s5 4400m
d43: Soft Partition is setup

# metainit d44 -p c0t2d0s5 7500m
d44: Soft Partition is setup

Now we have four soft partitions, or we can consider them as four different slices, under first disk and another four equal size soft partitions, to the second disk. We could stripe them and create four mount points to install, Oracle software, for instance.

# metainit d51 1 2 d31 d41
d51: Concat/Stripe is setup

# metainit d52 1 2 d32 d42
d52: Concat/Stripe is setup

# metainit d53 1 2 d33 d43
d53: Concat/Stripe is setup

# metainit d54 1 2 d34 d44
d54: Concat/Stripe is setup

Our new volumes are: d51, d52, d53 and d54. These will be our mount points what we are looking for. We just have to format and add them to the vfstab.

# newfs -v /dev/md/rdsk/d51
# newfs -v /dev/md/rdsk/d52
# newfs -v /dev/md/rdsk/d53
# newfs -v /dev/md/rdsk/d54

Create the mount points: /u01 /u02 /u03 and /u04 and mount the previous volumes

# mkdir /u01 /u02 /u03 /u04
# mount -F ufs -o logging /dev/md/dsk/d51 /u01
# mount -F ufs -o logging /dev/md/dsk/d52 /u02
# mount -F ufs -o logging /dev/md/dsk/d53 /u03
# mount -F ufs -o logging /dev/md/dsk/d54 /u04

Afficher le cache ZFS

 echo ::memstat | mdb -k

 Page Summary                Pages                MB  %Tot
 ------------     ----------------  ----------------  ----
 Kernel                    1319269              5153    2%
 ZFS File Data              993669              3881    1%
 Anon                        39776               155    0%
 Exec and libs                4063                15    0%
 Page cache                  38763               151    0%
 Free (cachelist)            44917               175    0%
 Free (freelist)          64662831            252589   96%

 Total                    67103288            262122
 Physical                 65223127            254777