On 09/10/24 at 21:10, Jochen Spieker wrote:
Andy Smith:
Hi,
On Wed, Oct 09, 2024 at 08:41:38PM +0200, Franco Martelli wrote:
Do you know whether MD is clever enough to send an email to root when it
fails the device? Or have I to keep an eye on /proc/mdstat?
For more than a decade mdadm has shipped with a service that runs in
monitor mode to do this.
https://manpages.debian.org/bookworm/mdadm/mdadm.8.en.html#MONITOR_MODE
And this is configured here:
# grep -B1 MAILADDR /etc/mdadm/mdadm.conf
# instruct the monitoring daemon where to send mail alerts
MAILADDR root
Yes, I think I have mdadm running properly to achieve that:
~$ pstree -cpan|grep mdadm
|-mdadm,459 --monitor --scan
~$ grep -B1 MAILADDR /etc/mdadm/mdadm.conf
# instruct the monitoring daemon where to send mail alerts
MAILADDR root
I asked this question because I was unsure. In the past it happened
system freeze so I needed to hard reboot the the system, sometime this
caused a "resync" of the array and no email was sent to root. A "resync"
activity falls in the "RebuildStarted" mdadm's event. The man-page says:
...
Only Fail, FailSpare, DegradedArray, SparesMissing and TestMessage cause
Email to be sent.
...
This explain why an email hadn't been sent from mdadm. Thank you very
much Andy and Jochen.
Cheers,
--
Franco Martelli
