11-06-2013
Ask concept soft partition vs hard partition
Hi Experts
I would like to know different between soft partition concept and hard partition concept on solaris.
Here is little explanation between soft partition concept and hard partition concept on solaris.
Soft Partition:
1TB total space available in storage in all mapped to the OS to be configured to each partition so that each partition of the file system is set by the OS (control and manage partitions is done by the OS)
Hard Partition:
1TB total space available in storage is divided into multiple partitions to be configured for each file system in the OS, the division is done at the level of storage, so as not to burden the performance of the OS (control and managed by storage).
Which one the best configuration for solaris system? On this storage running SAP system.
Really appreciate for every comments.
Thanks
Edy
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LEARN ABOUT DEBIAN
metarecover
metarecover(1M) System Administration Commands metarecover(1M)
NAME
metarecover - recover soft partition information
SYNOPSIS
/sbin/metarecover [-n] [-v] [-s setname] component -p
/sbin/metarecover [-n] [-v] [-s setname] component -p {-d}
/sbin/metarecover [-n] [-v] [-s setname] component -p {-m}
DESCRIPTION
The metarecover command scans a specified component to look for soft partition configuration information and to regenerate the configura-
tion.
OPTIONS
The following options are supported:
-d Recover soft partitions in the metadevice state database from the extent headers on the device. Options -d and -m are mutu-
ally exclusive.
-m Regenerate the extent headers and reapplies them to the underlying device based on the soft partitions listed in the
metadevice state database. Options -d and -m are mutually exclusive.
-n Do not actually perform the operation. Show the output or errors that would have resulted from the operation, had it been
run.
-p Regenerate soft partitions based on the metadevice state database or extent headers on the underlying device. If neither -d
nor -m are specified, this option compares the soft partition information in the metadevice state database to the extent
headers.
-s setname Specify the name of the diskset on which metarecover works. Using the s option causes the command to perform its function
within the specified diskset. Without the -s option, the metarecover command operates on the metadevices and/or hot spare
pools in the local diskset.
This option is required to recover former sps from a diskset component or raw-device. setname must be identical to the
former setname in which the sps were created. The set numbers, however, seem irrelevant.
-v Verbose mode, displaying the changes being made.
OPERANDS
The following operand is supported:
component Specifies the c*t*d*s* number of the disk or slice containing the partitions, or the device name (for example, d10) of the
metadevice containing the partitions.
component can be a slice name, component name, /dev/dsk path, or /dev/rdsk path.
EXAMPLES
Example 1: Updating Metadevice State Database Based on Disk Extent Headers
A disk containing soft partitions is moved from one system to another. The system administrator would like to use the existing soft parti-
tions. metarecover updates the metadevice state database based on the extent headers on the disk.
# metarecover -v c0t3d0s2 -p -d
Example 2: Updating Metadevice State Database Based on Incomplete Soft Partition Creation
A system crashes in the middle of creating a new soft partition. The soft partition is in the creating state and the driver does not let
that device be opened. metarecover rewrites the extent headers for the partially created soft partition and mark it as Okay.
# metarecover -v c0t3d0s2 -p -m
Example 3: Updating Extent Headers Based on Metadevice State Database
Someone accidentally overwrote a portion of a disk leaving extent headers destroyed. metarecover rewrites the extent headers to ensure a
valid soft partition configuration, though user data is not recovered.
# metarecover -v d5 -m
Example 4: Validating Soft Partition Configuration
To validate the existing soft partition configuration, use metarecover with only the -p flag.
# metarecover c0t3d0s2 -p
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWmdr |
+-----------------------------+-----------------------------+
SEE ALSO
mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M),
metarename(1M), metareplace(1M), metaroot(1M), metaset(1M), metassist(1M), metastat(1M), metasync(1M), metattach(1M), md.tab(4), md.cf(4),
mddb.cf(4), md.tab(4), attributes(5), md(7D)
Solaris Volume Manager Administration Guide
SunOS 5.10 2 Jun 2004 metarecover(1M)