Multiple Path I/O - IBM
网页With Multiple Path I/O (MPIO), a device can be uniquely detected through one or more physical connections, or paths. A path-control module (PCM) provides the path management functions. An MPIO-capable device driver can control more than one type of target device. A PCM can support one or more specific devices.
Path control module attributes
网页The set of user changeable attributes is defined by the device vendor. A device-specific PCM can have device and path attributes. The following are the device attributes for the AIX default PCMs: algorithm. Determines the methodology by which the I/O is distributed across the paths for a device.
pcmpath query device <n> - IBM: AIX - Tek-Tips
网页2001年6月7日 · There are three pcmpath commands that offer this feature: pcmpath query device pcmpath query essmap pcmpath query portmap The following is a sample output of this new option in 'pcmpath query device'.
Migrate to AIXPCM using "Manage_Disk_Drivers" Command - IBM
网页Using the "manage_disk_drivers" command allows users to switch Path Control Modules on an AIX system without direct or extended application impact. However, a reboot of the host is required to make the change effective.
网页The SDDPCM provides enhanced utilities (pcmpath commands) to show mappings from adapters, paths, devices, as well as performance and error statistics than can be useful in SAN management for those supported devices.
网页The SDDPCM provides enhanced utilities (pcmpath commands) to show mappings from adapters, paths and devices as well as performance and error statistics than can be useful in SAN management for those supported devices.
SDDPCM path selection - IBM: AIX - Tek-Tips
网页2006年8月8日 · Yes, you are right, that command is pcmpath, and the driver is called sddpcm. Installing one more FC adapter is not an option. As far as I know, 12 paths is a limitaton built in SDDPCM. It is fairly sure that we have …
网页A new pcmpath command has been added to allow the user to dynamically change the timeout_policy attribute setting. pcmpath set device <n>/<n> <m> timeout_policy <option>. For detailed information regarding this pcmpath command, refer to …
AIX Running PCMPATH Connected to SVC. Lost Access to LUNs …
网页2013年11月21日 · P770 running AIX with Pcmpath connected to IBM SAN Volume Controller. One of the path failed due to Node failure in SVC. during that period, the server was rebooted and the LUNs was visible after the reboot.
Which AIX command's output is this? - Unix & Linux Stack Exchange
网页2012年3月7日 · The vpaths are the give-away. Original SDD (used via the datapath command) created vpaths, while the newer and better supported SDDPCM (used via the pcmpath command) uses hdisks only.
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