User manual

Chapter 6: Management with the CLI
209
logdrv
Usage
logdrv [-a <action>] [-l <LdId>] [-c <Ld count>] [-v]
logdrv -a locate -l <LdID>
logdrv -a mod -l <LdId> -s "<list of ld settings>"
Summary
The logdrv command displays information about the logical drives and changes
logical drive settings.
To create a logical drive, see the array command on page 190.
Options
-a <action> Specifies the action to perform.
list (Default) Displays a summary of one or more logical
drives.
mod Changes logical drive settings.
locate Locates a logical drive within the enclosure by flashing
drive carrier LEDs.
-l [<LD ID>] Logical drive ID.
-c [<LD count>] Logical drive count. Requires the -a list option.
-s ["<option>=<value>"]Specifies the logical drive settings to change.
alias= A user-specified name for the logical drive.
Up to 32 characters, containing alpha-numeric
characters, blank spaces and underscores. Beginning
and ending blank spaces are discarded.
WritePolicy= Specifies logical drive write policy.
writethru Writes are not cached.
writeback Writes are cached. Note: Cannot be set if ReadPolicy is
set to “nocache.”
ReadPolicy= Specifies logical drive read policy.
readahead Reads extra data to help reduce read times of sequential
data.
readcache Caches reads in the case the same request is made
again.
nocache No caching algorithm.
PreferredCtrlId= Specifies which controller the LD is prefers for LUN
affinity. Valid value is 1 or 2.
-v Verbose mode. Used with -a list.