HP B-series Switch Accelerators Linux Manuel d'utilisateur télécharger pdf (Page 20)

Software installation 20

The options file contains documentation for the various settings: two of which, MOUNTS and

KILL_PROCS_ON_UMOUNT, are discussed in more detail in the "Handling IO Accelerator driver unloads (on

page 20)."

Mounting filesystems

The IO Accelerator driver is not loaded in the initrd, and, (built kernel) therefore, using the standard

method for mounting filesystems (/etc/fstab), does not work.

To set up auto-mounting of a filesystem hosted on an IO Accelerator:

1. Add the mnt command to /etc/fstab.

2. Add the noauto option to /etc/fstab.

For example:

o /dev/fcta /mnt/fioa ext3 defaults,noauto 0 0

o /dev/fctb1 /mnt/iodrive ext3 defaults,noauto 0 0

To have the init script mount these drives after the driver is loaded and unmount them before the driver is

unloaded, add a list of mount points to the options file. For more information, see "Using module parameters

(on page 20)."

For the filesystem mounts shown in the previous example, the line in the options file appears similar to the

following:

MOUNTS="/mnt/fioa /mnt/iodrive"

Handling IO Accelerator driver unloads

By default, the init script searches for any processes holding open a mounted filesystem, kills them, and

then enables the filesystem to be unmounted. This behavior is controlled by the option

KILL_PROCS_ON_UMOUNT in the options file. If these processes are not killed, then the filesystem cannot be

unmounted. This might keep the IO Accelerator from unloading cleanly, causing a significant delay on the

subsequent boot.

Setting the IO Accelerator driver options

This section explains how to set IO Accelerator options.

Using module parameters

The following table describes the module parameters you can set by editing the

/usr/modprobe.d/iomemory-vsl.conf file and changing the values.

IMPORTANT: To take effect, these changes must be completed before the IO Accelerator is

loaded.

Module parameter Default

(minimum/maxi

mum)

Description

auto_attach

True Attach the device on startup.

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HP B-series Switch Accelerators Linux Manuel d'utilisateur Page 20