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ii(7d) [opensolaris man page]

ii(7D)								      Devices								    ii(7D)

NAME
ii - Instant Image control device DESCRIPTION
The ii device is a control interface for Instant Image devices and controls the Instant Image module through the ioctl(2) interface. Instant Image is a point-in-time volume copy facility for the Solaris operating environment that is administered through the iiadm(1M) com- mand. With Instant Image, you can create an independent point-in-time copy of a volume or a master volume-dependent point-in-time view. You can also independently access the master and shadow volume for read and write operations. Instant Image also lets you update the shadow volume from the master volume or restore the master volume from the shadow. (Restore operations to volumes can be full or incremental). Instant Image supports fast volume re-synchronization, letting you create a new point-in-time volume copy by updating the specified volume with only changed data. To create a shadow volume you need a: 1. Master volume to be shadowed. 2. Shadow volume where the copy will reside. This volume must be equal to or larger than the master volume. 3. Administrative bitmap volume or file for tracking differences between the shadow and master volumes. The administrative bitmap volume or file must be at least 24Kbytes in size and requires 8KBytes for each GByte (or part thereof) of master volume size, plus an additional 8KBytes overhead. For example, to shadow a 3GByte master volume, the administration volume must be 8KBytes + (3 * 8KBytes) =32KBytes in size. The Instant Image module uses services provided by the SDBC and SD_GEN modules. The SV module is required to present a conventional block device interface to the storage product interface of the Instant Image, SDBC and SD_GEN modules. When a shadow operation is suspended or resumed, the administration volumes may be stored in permanent SDBC storage or loaded and saved to and from kernel memory. The ii_bitmap variable in the /kernel/drv/ii.conf configuration file determines the administration volume storage type. A value of 0 indicates kernel memory, while a value of 1 indicates permanent SDBC storage. If the system is part of a storage prod- ucts cluster, use the 1 value (permanent storage), otherwise use kernel memory (0 value). FILES
kernel/drv/ii 32- bit ELF kernel module (x86). /kernel/drv/ii.conf Configuration file. ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |x86 | +-----------------------------+-----------------------------+ |Availability |SUNWiu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ SEE ALSO
iiadm(1M), ioctl(2), attributes(5), sv(7D) SunOS 5.11 8 Jun 2007 ii(7D)

Check Out this Related Man Page

VGDISPLAY(8)						      System Manager's Manual						      VGDISPLAY(8)

NAME
vgdisplay - display attributes of volume groups SYNOPSIS
vgdisplay [-A|--activevolumegroups] [-c|--colon] [-d|--debug] [-h|--help] [--ignorelockingfailure] [-P|--partial] [-s|--short] [-v[v]|--verbose [--verbose]] [--version] [VolumeGroupName...] DESCRIPTION
vgdisplay allows you to see the attributes of VolumeGroupName (or all volume groups if none is given) with it's physical and logical vol- umes and their sizes etc. vgs (8) is an alternative that provides the same information in the style of ps (1). OPTIONS
See lvm for common options. -A, --activevolumegroups Only select the active volume groups. -c, --colon Generate colon separated output for easier parsing in scripts or programs. N.B. vgs (8) provides considerably more control over the output. The values are: 1 volume group name 2 volume group access 3 volume group status 4 internal volume group number 5 maximum number of logical volumes 6 current number of logical volumes 7 open count of all logical volumes in this volume group 8 maximum logical volume size 9 maximum number of physical volumes 10 current number of physical volumes 11 actual number of physical volumes 12 size of volume group in kilobytes 13 physical extent size 14 total number of physical extents for this volume group 15 allocated number of physical extents for this volume group 16 free number of physical extents for this volume group 17 uuid of volume group -s, --short Give a short listing showing the existence of volume groups. -v, --verbose Display verbose information containing long listings of physical and logical volumes. If given twice, also display verbose runtime information of vgdisplay's activities. --version Display version and exit successfully. SEE ALSO
lvm(8), vgs(8), pvcreate(8), vgcreate(8), lvcreate(8) Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) VGDISPLAY(8)
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