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56
Alphabetical list of commands
When a disk group is quarantined, its disks become write-locked, its volumes become inaccessible,
and it is not available to hosts until it is dequarantined. If there are interdependencies between the
quarantined disk group’s volumes and volumes in other disk groups, quarantine may temporarily
impact operation of those other volumes.
Depending on the operation, the length of the outage, and the settings associated with the
operation, the operation may automatically resume when the disk group is dequarantined or may
require manual intervention. A disk group can remain quarantined indefinitely without risk of data
loss.
A disk group is dequarantined when it is brought back online, which can occur in three ways:
•
If the inaccessible disks come online, making the disk group
FTOL
, the disk group is
automatically dequarantined.
•
If after 60 seconds from being quarantined the disk group is
QTCR
or
QTDN
, the disk group is
automatically dequarantined. The inaccessible disks are marked as failed and the disk group
status changes to
CRIT
(critical) or
FTDN
(fault tolerant with a down disk). If the inaccessible
disks later come online, they are marked as
LEFTOVR
(leftover).
•
The
dequarantine
command is used to manually dequarantine the disk group. If the
inaccessible disks later come online, they are marked as
LEFTOVR
(leftover). If event 172 was
logged, do not use the
dequarantine
command. Instead follow the event’s
recommended-action text. If event 485 was logged, use the
dequarantine
command only as
specified by the event’s recommended-action text to avoid data corruption or loss.
When a disk group is dequarantined, event 173 is logged.
A quarantined disk group can be fully recovered if the inaccessible disks are restored. Make sure
that all disks are properly seated, that no disks have been inadvertently removed, and that no cables
have been unplugged. Sometimes not all disks in the disk group power up. Check that all enclosures
have restarted after a power failure. If these problems are found and then fixed, the disk group
recovers and no data is lost.
If the inaccessible disks cannot be restored (for example, they failed), and the disk group’s status is
FTDN
or
CRIT
, and compatible spares are available to replace the inaccessible disks, reconstruction
will automatically begin.
If a replacement disk (reconstruct target) is inaccessible at power up, the disk group becomes
quarantined. When the disk is found, the disk group is dequarantined and reconstruction starts. If
reconstruction was in process, it continues where it left off.
NOTE:
The only commands allowed for a quarantined disk group are
dequarantine
. If you delete a quarantined disk group and its inaccessible disks later come online, the disk
group will reappear as quarantined or offline and you must delete it again (to clear those disks).
Min. role
manage
Syntax
dequarantine
vdisk
vdisk
Parameters
vdisk
vdisk
The name or serial number of the disk group to remove from quarantine. A name that includes a
space must be enclosed in double quotes.
Содержание AssuredSAN 6004
Страница 11: ...Document conventions and symbols 11 TIP Provides helpful hints and shortcuts...
Страница 58: ...58 Alphabetical list of commands exit Description Log off and exit the CLI session Min role monitor Syntax exit...
Страница 107: ...set led 107 Identify drawer 1 in enclosure 1 set led drawer 1 1 on Identify fan 1 in enclosure 1 set led fan 1 1 on...
Страница 114: ...114 Alphabetical list of commands See also set cli parameters show protocols...
Страница 139: ...show controller statistics 139 See also reset all statistics reset controller statistics...
Страница 153: ...show disk statistics 153 See also reset all statistics reset disk error statistics reset disk statistics show disks...
Страница 162: ...162 Alphabetical list of commands See also show power supplies...
Страница 207: ...show volume reservations 207 Basetypes volume reservations status See also release volume show volumes...