mdadm feature suggestion
A message that is not in the archive (sent off-list or not yet received): [email protected]
Quoted 12 lines · On Monday May 5, [email protected] wrote:
Hello,
I've written a "mdadm2sms", which sends me SMS to my mobilephone when something happens to raid.
Yesterday I've got a sms / also written into syslog (standard), that a rebuild has been started, just for data-checking. My suggestion is now, it is possible to add 3 more Events just for this DataCheck event? Like DataCheckStarted, CheckStarted, CheckedFinished and Check20-100 or something? Cause the problem is, you can't trigger a regulary mdadm-datacheck without using syslog. It would be very nice, when it would be possible to trigger a Datacheck with a event command.
I'm sorry, but I don't understand what you are asking for.
When a data-check is run, it should generate events just like when a resync or recovery is run. These will be passed to any --program that you give to mdadm --monitor.
In that program you can differentiate between data-check/resync/recovery by looking in /proc/mdstat.
Do you want the events to be different for the different types of 'resync' (check/sync/recover)?? So you can get an SMS on a resync start but not on a data-check start? Is that it?
I don't understand
"It would be very nice, when it would be possible to trigger a Datacheck with a event command. "
at all. How would an event command trigger a Datacheck???
confused.
NeilBrown
Quoted 17 lines · Neil Brown
Quoted 6 lines · On Monday May 5, [email protected] wrote:
Hello,
I've written a "mdadm2sms", which sends me SMS to my mobilephone when something happens to raid.
Yesterday I've got a sms / also written into syslog (standard), that a rebuild has been started, just for data-checking. My suggestion is now, it is possible to add 3 more Events just for this DataCheck event? Like DataCheckStarted, CheckStarted, CheckedFinished and Check20-100 or something? Cause the problem is, you can't trigger a regulary mdadm-datacheck without using syslog. It would be very nice, when it would be possible to trigger a Datacheck with a event command.I'm sorry, but I don't understand what you are asking for.
When a data-check is run, it should generate events just like when a resync or recovery is run. These will be passed to any --program that you give to mdadm --monitor.
In that program you can differentiate between data-check/resync/recovery by looking in/proc/mdstat.
Quoted 9 lines
Do you want the events to be different for the different types of 'resync' (check/sync/recover)?? So you can get an SMS on a resync start but not on a data-check start? Is that it?
I don't understand
"It would be very nice, when it would be possible to trigger a Datacheck with a event command. "
at all. How would an event command trigger a Datacheck???
I would handle this by configuring syslog to write to a fifo, then running a daemon to read the messages and send whatever SMS you like. I do this on my mail server and firewall systems, both do adaptive configuration of the iptables firewall based on behavior of connected hosts.
See syslog.conf, the "|" feature. My daemon is a perl script which just sucks on the fifo (see mkdev) for the information to process.
Signature · 3 lines
Bill Davidsen <[email protected]> "Woe unto the statesman who makes war without a reason that will still be valid when the war is over..." Otto von Bismark