10-31-2008
Seems like you use SDD that creates vpath devices from the hdisks. The hdisks appear as often as there are paths, i.e. if you see every hdisk four times there are four paths from your server's FC adapter to the storage box. To make the best use of the multi path I/O you need to use the vpath devices for creating/extending a vg and must not use the hdisk devices. Basic SDD commands are hd2vp (to create vpath devices from hdisks) vp2hd (to remove the vpath device) and dpovgfix (if the vpath configuration got messed up).
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Correct
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hdisk2
::::::::::::
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LEARN ABOUT OPENSOLARIS
devid_cache
devices(4) File Formats devices(4)
NAME
devices, devid_cache, snapshot_cache, mdi_scsi_vhci_cache, mdi_ib_cache, devname_cache - device configuration information
SYNOPSIS
/etc/devices
/etc/devices/devid_cache
/etc/devices/snapshot_cache
/etc/devices/mdi_scsi_vhci_cache
/etc/devices/mdi_ib_cache
/etc/devices/devname_cache
DESCRIPTION
The directory /etc/devices is a repository of device-related data. Files in this directory are used to preserve this information across
reboots and are created and updated as necessary by the system.
There are no administrative actions necessary with respect to files in /etc/devices. Should the contents of a file become corrupted or an
update fail, the file can simply be removed. The system re-creates the file as necessary.
SEE ALSO
devfsadm(1M), dev(7FS), ddi_devid_compare(9F), ddi_devid_compare(9F)
NOTES
Files in this directory do not constitute an API. Files might not exist or might have a different content or interpretation in a future
release. The existence of this notice does not imply that any other documentation that lacks this notice constitutes an API.
SunOS 5.11 8 Jun 2006 devices(4)