Date: Fri, 11 Oct 2013 12:23:12 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: <trociny@FreeBSD.org>, "Pete French" <petefrench@ingresso.co.uk> Cc: freebsd-stable@freebsd.org, petefrench@ingresso.co.uk Subject: Re: hast and zfs trim possibly causing some problems in 9.2 Message-ID: <A82E7BE3B1114841B966B94753A4D7A5@multiplay.co.uk> References: <E1VUZwW-0002TR-Br@dilbert.ingresso.co.uk>
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----- Original Message -----
From: "Pete French" <petefrench@ingresso.co.uk>
>> If the device on the secondary node does not supports DELETE, but the
>> device on the primary does, HAST will report to ZFS that DELETE
>> succeeded (although it failed on the secondary), and ZFS will not
>> disable TRIM. Pete, isn't this your case?
>
> Afraid not, both machines are running normal "spinning rust" hard
> drives as the actual storage layer, so there is nothing TRIM capable
> anywhere.
>
> I didnt get much chnace to look at this yesterday, but am looking at the logs
> again now, and I see these messages right up to the time the machine
> fell over. That machine had been up for a long time, and it was still logging
> these messages, so it looks very much as if ZFS did not stop trying to
> issue the TRIM.
What do you see from:
sysctl kstat.zfs.misc.zio_trim
You should be seeing none zero unsupported and zero failed. If this is
not the case its likely hast isnt setting bio_error to ENOTSUP.
Regards
Steve
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