* AHCI hot replace sdX incrementing
@ 2007-04-09 17:43 Gaston, Jason D
2007-04-10 9:50 ` Jeff Garzik
0 siblings, 1 reply; 2+ messages in thread
From: Gaston, Jason D @ 2007-04-09 17:43 UTC (permalink / raw)
To: Jeff Garzik, linux-ide
Hello,
When I hot-remove a SATA HD in AHCI mode and then hot-plug the drive
back in again, the /dev/sdX number changes to the next available number.
Is this going to be a problem when using a RAID array that includes that
drive?
Thanks,
Jason
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: AHCI hot replace sdX incrementing
2007-04-09 17:43 AHCI hot replace sdX incrementing Gaston, Jason D
@ 2007-04-10 9:50 ` Jeff Garzik
0 siblings, 0 replies; 2+ messages in thread
From: Jeff Garzik @ 2007-04-10 9:50 UTC (permalink / raw)
To: Gaston, Jason D; +Cc: linux-ide
Gaston, Jason D wrote:
> When I hot-remove a SATA HD in AHCI mode and then hot-plug the drive
> back in again, the /dev/sdX number changes to the next available number.
> Is this going to be a problem when using a RAID array that includes that
> drive?
Well, it's certainly something you have to deal with. You have to tell
the RAID driver you added a component to the system. Ideally mdadm or
udev should take care of that, but I'm not sure it's all there yet.
In any case, it's a new device so, while inconvenient for some
scenarios, I think it is best to represent a new device with a new
device node. Various entities are still probably holding references to
the old device, and you don't want the system to think that you plugged
in the _same_ device again.
Jeff
^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-04-10 9:50 ` Jeff Garzik
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