Date: Thu, 12 Sep 2024 13:29:28 +0000 From: "Dave Cottlehuber" <dch@skunkwerks.at> To: "Dan Mahoney (Ports)" <freebsd@gushi.org> Cc: questions <questions@freebsd.org> Subject: Re: Zpool status -- why does a suboptimal pool show as "ONLINE"? Message-ID: <312af967-e5bf-4e83-b48b-7c2841719373@app.fastmail.com> In-Reply-To: <378D100E-FFE1-4DA7-9C52-219863A50A24@gushi.org> References: <378D100E-FFE1-4DA7-9C52-219863A50A24@gushi.org>
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On Thu, 12 Sep 2024, at 13:05, Dan Mahoney (Ports) wrote:
> Hey there all,
>
> I have a nagios check that assumes that if I have a suboptimal zfs=20
> zpool, that the word =E2=80=9CDEGRADED=E2=80=9D will appear in the out=
put. One disk of=20
> a two-disk mirror seems to have faulted, but the pool still shows as=20
> =E2=80=9CONLINE=E2=80=9D. I know I=E2=80=99ve seen the word =E2=80=9C=
DEGRADED=E2=80=9D in the past. What=E2=80=99s=20
> different?
>
> pool: zroot
> state: ONLINE
> status: One or more devices are faulted in response to persistent erro=
rs.
> Sufficient replicas exist for the pool to continue functioning=
in a
> degraded state.
> action: Replace the faulted device, or use 'zpool clear' to mark the d=
evice
> repaired.
> config:
>
> NAME STATE READ WRITE CKSUM
> zroot ONLINE 0 0 0
> mirror-0 ONLINE 0 0 0
> ada0p3 FAULTED 4 372 0 too many errors
> ada1p3 ONLINE 0 0 0
>
> errors: No known data errors
>
> 14.1, if it matters, the disks are two innolite SATADOM=E2=80=99s.
Hi Dan
I agree that I would expect the mirror-0 at least to report DEGRADED
or similar. Hopefully one of the zfs people clarifies the logic here.
Practically, what I do is run:
zpool status | grep -v 'with 0 errors' | sha256
and check that this hash remains the same over time. It's obviously
different for each pool. Could that help for nagios?
A+
Dave
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