02-23-2006
Epilog
OK, so I have a window with glance running to watch the internal operations of my dd command. The top few lines of glance are activity bars showing overall system utilization. For hours, disk usage was at 100%. Then I noticed that it dropped to 0. No disk utilization at all. Did my dd finish? Nope. It is still running. Both of my file pointers froze at exactly 34359738368. I allowed this situation to persist for a hour or so, mostly because I was busy with something else. Then I killed the dd command. I am certain it would have "ran" for another 4 days if I have let it. Or another 4 years. glance said that dd was in I/O wait and that (to me) points the finger towards the driver. If a gigabyte is 2^30, then 34359738368 is exactly 32 GB. That is a larger number than will fit into 32 bits. So the kernel, the driver, and dd are all in 64 bit mode. But apparently, the driver bumped into some other limit.
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LEARN ABOUT OPENSOLARIS
metaimport
metaimport(1M) System Administration Commands metaimport(1M)
NAME
metaimport - imports disk sets into existing Solaris Volume Manager configurations
SYNOPSIS
metaimport -s setname [-n] [-f] [-v] [disks]...
metaimport -r [-v] [disks]...
metaimport -V
metaimport -?
DESCRIPTION
The metaimport command allows the importing of disk sets, including replicated disk sets, into an existing Solaris Volume Manager configu-
ration. Replicated disk sets are disk sets created using remote replication software.
The default Solaris Volume Manager configuration specifies a maximum number of disk sets that can be configured. The metaimport command
fails if importing the disk set would result in exceeding the number of disk sets configured on the system. To increase the number of disk
sets allowed on a system, see the .
Use metaset(1M) or metastat(1M) to view the configuration of the imported set.
You must run metaimport as root.
metaimport requires a functional Solaris Volume Manager configuration before it runs.
OPTIONS
The following options are supported:
-f Force the import, even if a quorum of replicas from the imported disk set is not available. This option could result in cor-
rupt configurations and should only be used when metaimport fails with the "Insufficient quorum detected; exiting" error. If
only a partial disk set is available, this option might be necessary to successfully import. Some or all data could be cor-
rupted or unavailable when importing a partial set or a set lacking a replica quorum.
-n Does not actually perform the operation, but shows the output or errors that would have resulted from the operation, had it
been run.
-r Report on the non-configured disk sets found on the system. If no disk device or LUN is specified, metaimport reports on all
non-configured disk sets attached to the system. When the name of one disk is specified, metaimport reports on the disk set
(or virtual LUN) containing the specified disk. If two or more disks are specified, metaimport reports on the set (or sets,
if they belong to different disk sets) containing the specified disks. If two or more disks are specified, metaimport reports
on the set (or sets, if they belong to different disk sets) containing the specified disks.
This option can be used in conjunction with the -v option to give verbose output on each disk set reported.
-s setname Specify the disk set name to use when importing. The imported disk set will be called setname, without regard to the name it
may have had on a different system.
-v Verbose. Provides detailed information about the metadb replica location and status. It also provides detailed information
about the disk set configuration and status similar to the "metastat -c" output.
-V Version information.
-? Display a help message.
EXAMPLES
Example 1 Importing a Disk Set
The following example creates a disk set called blue and identifies c1t5d0 as a disk containing a state database replica from the disk set
being imported.
# metaimport -s blue c1t5d0
Example 2 Reporting Disk Sets to Import
The following example scans all disks and LUNs attached to the system and configured as part of the system. It scans for disks that could
be part of a disk set to be imported. Components that are already part of the Solaris Volume Manager configuration are ignored.
This use of metaimport provides suggested forms of the metaimport command to use to actually import the disk sets that have been found. You
can specify a component on the command line to reduce the scope of the scan and generate results more quickly.
# metaimport -r
EXIT STATUS
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWmdu |
+-----------------------------+-----------------------------+
|Interface Stability |Stable |
+-----------------------------+-----------------------------+
SEE ALSO
mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M),
metarecover(1M), metareplace(1M), metaroot(1M), metaset(1M), metastat(1M), metasync(1M), metattach(1M), md.tab(4), md.cf(4), mddb.cf(4),
attributes(5)
SunOS 5.11 28 Oct 2005 metaimport(1M)