Re: no hotplugging support (FIXME)

[Robert Hancock <hancockrwd@gmail.com>]

Todd and Margo Chester wrote:
> Hi Jeff,
> 
> I am having a nasty problem with hot swapping a removable (not
> eSATA) drive I use for backup on several servers.  It is reported
> over on
> http://bugs.centos.org/view.php?id=3391
> 
> Trying to help me find a work around to the problem at
> http://www.centos.org/modules/newbb/viewtopic.php?topic_id=18608&start=0#forumpost68783 
> 
> Alan posted your ata_piix.c code at
> http://centos.toracat.org/ajb/tmp/toddandmargo/ata_piix.c
> He pointed out
> 
> 1483 /* no hotplugging support (FIXME) */
> 1484 if (!in_module_init)
> 1485 return -ENODEV;
> 
> What do you mean by the comment in line 1483?  Is there some
> know issue with hot swapping SATA drives?

If you're using the ata_piix driver then it means your motherboard is 
not in AHCI mode, so hotplugging is not supported by either the driver 
or controller. You have to enable AHCI for SATA hotplug to work on Intel 
controllers.