This is a good idea for a feature addition, but there currently is no select() support in the driver for reading events.
Vicky Gonzalez wrote:
Thanks again for all of your help Sean!
I thought I'd ask the rest of the folks here if there was a way for the MD driver to notify my process that something bad occurred or of a status change? So instead of me polling for status from the driver directly(using ioctls) or the mdadm(using ioctls & mdstat), can I register with the driver or and OS interrupt to catch something when changes occur?
Thanks! ~Vicky
-----Original Message----- From: Sean Kormilo [mailto:skormilo@nortelnetworks.com] Sent: Monday, April 14, 2003 11:31 AM To: Vicky Gonzalez Cc: Linux-RAID mailinglist Subject: Re: Ways to query RAID status
Vicky,
It depends upon what you are trying to monitor, and how you are trying to monitor it.
You have the following basic options: 1) /proc/mdstat 2) mdadm (from Neil Brown - should be many references to it on the mailing list archives) 3) ioctl (if you want to query from a C program)
The ioctl interface is missing the ability to query raid rebuild status. If that is something which interests you, let me know as I created a small patch to add a new ioctl to query raid rebuild information.
Sean.
Are the other ways to query the status of the RAID other than from querying the /proc/mdstat file? If I should ask a different list or need to look through the archives first , could someone please point me in the right direction.
Many Thanks!
~Vicky -
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