Reescaneo de tapes

Hay un servidor Solaris 10 el cual el cual tiene un nivel de parches bajo y por cuestiones con el proveedor no se puede actualizar. Cuando se reinicia una librería de tapes conectada por HBA, deja de ver los tapes y no se pueden hacer backups.
El procedimiento que se realiza para corregir esto es el siguiente:

Se listan los dispositivos y se ve que están en estado "failed":

[root@solaris10]:/>cfgadm -al
Ap_Id Type Receptacle Occupant Condition
N0.IB6 PCI-X_I/O_B connected configured ok
N0.IB6::pci0 io connected configured ok
N0.IB6::pci1 io connected configured ok
N0.IB6::pci2 io connected configured ok
N0.IB6::pci3 io connected configured ok
N0.SB0 CPU_V3 connected configured ok
N0.SB0::cpu0 cpu connected configured ok
N0.SB0::cpu1 cpu connected configured ok
N0.SB0::cpu2 cpu connected configured ok
N0.SB0::cpu3 cpu connected configured ok
N0.SB0::memory memory connected configured ok
N0.SB2 CPU_V3 connected configured ok
N0.SB2::cpu0 cpu connected configured ok
N0.SB2::cpu1 cpu connected configured ok
N0.SB2::cpu2 cpu connected configured ok
N0.SB2::cpu3 cpu connected configured ok
N0.SB2::memory memory connected configured ok
N0.SB4 unknown empty unconfigured unknown
c0 scsi-bus connected configured unknown
c0::dsk/c0t0d0 CD-ROM connected configured unknown
c1 scsi-bus connected configured unknown
c1::dsk/c1t0d0 disk connected configured unknown
c1::dsk/c1t1d0 disk connected configured unknown
c1::rmt/0 tape connected configured unknown
c2 scsi-bus connected unconfigured unknown
c3 fc-fabric connected configured unknown
c3::50060e8004eabf20 disk connected configured unknown
c4 fc-fabric connected configured unknown
c4::100000e00222e5d7 unknown connected unconfigured unknown
c4::100000e00222fdad unavailable connected configured failed
c4::100000e00222fe25 unavailable connected configured failed
c4::100000e002233d02 unavailable connected configured failed
c4::100000e002233f76 unavailable connected configured failed
c4::100000e002234b9f unavailable connected configured failed
c4::100000e00242fdad unavailable connected configured failed
c4::100000e00242fe25 unavailable connected configured failed
c4::100000e002433d02 unavailable connected configured failed
c4::100000e002433f76 unavailable connected configured failed
c4::100000e002434b9f unavailable connected configured failed
c5 fc-fabric connected configured unknown
c5::50060e8004eabf70 disk connected configured unknown
c6 fc connected unconfigured unknown
[root@solaris10]:/>

Se hace un reescaneo de dispositivos, borrando los que ya no ve:

[root@solaris10]:/>devfsadm -Cv
devfsadm[22389]: verbose: removing file: /dev/rmt/1
devfsadm[22389]: verbose: removing file: /dev/rmt/1n
devfsadm[22389]: verbose: removing file: /dev/rmt/1b
devfsadm[22389]: verbose: removing file: /dev/rmt/1bn
devfsadm[22389]: verbose: removing file: /dev/rmt/1l
devfsadm[22389]: verbose: removing file: /dev/rmt/1m
.
.
.

El administrador de los switch de SAN borra la zona de la librería y se vuelve a escanear dispositivos en el servidor:

[root@solaris10]:/>devfsadm -Cv
[root@solaris10]:/>cfgadm -al
Ap_Id Type Receptacle Occupant Condition
N0.IB6 PCI-X_I/O_B connected configured ok
N0.IB6::pci0 io connected configured ok
N0.IB6::pci1 io connected configured ok
N0.IB6::pci2 io connected configured ok
N0.IB6::pci3 io connected configured ok
N0.SB0 CPU_V3 connected configured ok
N0.SB0::cpu0 cpu connected configured ok
N0.SB0::cpu1 cpu connected configured ok
N0.SB0::cpu2 cpu connected configured ok
N0.SB0::cpu3 cpu connected configured ok
N0.SB0::memory memory connected configured ok
N0.SB2 CPU_V3 connected configured ok
N0.SB2::cpu0 cpu connected configured ok
N0.SB2::cpu1 cpu connected configured ok
N0.SB2::cpu2 cpu connected configured ok
N0.SB2::cpu3 cpu connected configured ok
N0.SB2::memory memory connected configured ok
N0.SB4 unknown empty unconfigured unknown
c0 scsi-bus connected configured unknown
c0::dsk/c0t0d0 CD-ROM connected configured unknown
c1 scsi-bus connected configured unknown
c1::dsk/c1t0d0 disk connected configured unknown
c1::dsk/c1t1d0 disk connected configured unknown
c1::rmt/0 tape connected configured unknown
c2 scsi-bus connected unconfigured unknown
c3 fc-fabric connected configured unknown
c3::50060e8004eabf20 disk connected configured unknown
c4 fc-fabric connected configured unknown
c4::100000e00222fe25 tape connected configured unusable
c4::100000e002233d02 tape connected configured unusable
c4::100000e002233f76 tape connected configured unusable
c4::100000e002234b9f tape connected configured unusable
c4::100000e00242fdad tape connected configured unusable
c4::100000e00242fe25 tape connected configured unusable
c4::100000e002433d02 tape connected configured unusable
c4::100000e002433f76 tape connected configured unusable
c4::100000e002434b9f tape connected configured unusable
c5 fc-fabric connected configured unknown
c5::50060e8004eabf70 disk connected configured unknown
c6 fc connected unconfigured unknown
[root@solaris10]:/>

Ya aparecen en estado "unusable", ahora el administrador de SAN vuelve a presentar la zona de la librería, se reescanea y se vuelven a listar:

[root@solaris10]:/>devfsadm -Cv
[root@solaris10]:/>cfgadm -al
Ap_Id Type Receptacle Occupant Condition
N0.IB6 PCI-X_I/O_B connected configured ok
N0.IB6::pci0 io connected configured ok
N0.IB6::pci1 io connected configured ok
N0.IB6::pci2 io connected configured ok
N0.IB6::pci3 io connected configured ok
N0.SB0 CPU_V3 connected configured ok
N0.SB0::cpu0 cpu connected configured ok
N0.SB0::cpu1 cpu connected configured ok
N0.SB0::cpu2 cpu connected configured ok
N0.SB0::cpu3 cpu connected configured ok
N0.SB0::memory memory connected configured ok
N0.SB2 CPU_V3 connected configured ok
N0.SB2::cpu0 cpu connected configured ok
N0.SB2::cpu1 cpu connected configured ok
N0.SB2::cpu2 cpu connected configured ok
N0.SB2::cpu3 cpu connected configured ok
N0.SB2::memory memory connected configured ok
N0.SB4 unknown empty unconfigured unknown
c0 scsi-bus connected configured unknown
c0::dsk/c0t0d0 CD-ROM connected configured unknown
c1 scsi-bus connected configured unknown
c1::dsk/c1t0d0 disk connected configured unknown
c1::dsk/c1t1d0 disk connected configured unknown
c1::rmt/0 tape connected configured unknown
c2 scsi-bus connected unconfigured unknown
c3 fc-fabric connected configured unknown
c3::50060e8004eabf20 disk connected configured unknown
c4 fc-fabric connected configured unknown
c4::100000e00222e5d7 unknown connected unconfigured unknown
c4::100000e00222fdad tape connected configured unknown
c4::100000e00222fe25 tape connected configured unknown
c4::100000e002233d02 tape connected configured unknown
c4::100000e002233f76 tape connected configured unknown
c4::100000e002234b9f tape connected configured unknown
c4::100000e00242fdad tape connected configured unknown
c4::100000e00242fe25 tape connected configured unknown
c4::100000e002433d02 tape connected configured unknown
c4::100000e002433f76 tape connected configured unknown
c4::100000e002434b9f tape connected configured unknown
c5 fc-fabric connected configured unknown
c5::50060e8004eabf70 disk connected configured unknown
c6 fc connected unconfigured unknown
[root@solaris10]:/>

Ahora aparecen en estado "unknown" lo que quiere decir que ya los ve bien y se pueden usar las tapes de la librería.