* [linux-lvm] lvm2 low space handling
@ 2014-10-07 21:07 Oliver Rath
2014-10-08 9:40 ` Zdenek Kabelac
0 siblings, 1 reply; 2+ messages in thread
From: Oliver Rath @ 2014-10-07 21:07 UTC (permalink / raw)
To: LVM general discussion and development
Hi list,
how can I get some email, if a thin pool runs full? On my syslog i found
the following messages:
Oct 7 21:29:25 dmicn20 kernel: [1115276.145019] device-mapper: thin:
252:13: reached low water mark for metadata device: sending event.
Oct 7 21:29:33 dmicn20 kernel: [1115284.693816] device-mapper: thin:
252:13: reached low water mark for metadata device: sending event.
Oct 7 21:29:35 dmicn20 kernel: [1115286.086837] device-mapper: thin:
252:13: reached low water mark for metadata device: sending event.
Oct 7 21:29:36 dmicn20 kernel: [1115287.369534] device-mapper: thin:
252:13: reached low water mark for metadata device: sending event.
Oct 7 21:29:55 dmicn20 kernel: [1115306.290745] device-mapper: thin:
252:13: reached low water mark for metadata device: sending event.
...
How can i find these messages?
Tfh!
Oliver
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [linux-lvm] lvm2 low space handling
2014-10-07 21:07 [linux-lvm] lvm2 low space handling Oliver Rath
@ 2014-10-08 9:40 ` Zdenek Kabelac
0 siblings, 0 replies; 2+ messages in thread
From: Zdenek Kabelac @ 2014-10-08 9:40 UTC (permalink / raw)
To: LVM general discussion and development
Dne 7.10.2014 v 23:07 Oliver Rath napsal(a):
> Hi list,
>
> how can I get some email, if a thin pool runs full? On my syslog i found
> the following messages:
>
>
> Oct 7 21:29:25 dmicn20 kernel: [1115276.145019] device-mapper: thin:
> 252:13: reached low water mark for metadata device: sending event.
> Oct 7 21:29:33 dmicn20 kernel: [1115284.693816] device-mapper: thin:
> 252:13: reached low water mark for metadata device: sending event.
> Oct 7 21:29:35 dmicn20 kernel: [1115286.086837] device-mapper: thin:
> 252:13: reached low water mark for metadata device: sending event.
> Oct 7 21:29:36 dmicn20 kernel: [1115287.369534] device-mapper: thin:
> 252:13: reached low water mark for metadata device: sending event.
> Oct 7 21:29:55 dmicn20 kernel: [1115306.290745] device-mapper: thin:
> 252:13: reached low water mark for metadata device: sending event.
> ...
>
> How can i find these messages?
Have you enabled thin threshold in lvm.conf?
thin_pool_autoextend_threshold = 70
thin_pool_autoextend_percent = 20
Currently there is not yet better policy support for filled thin pool devices.
And yes - you need to trap syslog messages if you want monitoring for filled
pool - there is no other support yet (i.e. dbus messaging)
Zdenek
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