Re: ZFS secondarycache on SSD problem on r255173

Still worth testing with the problem version installed but
with trim disabled to see if that clears the issues, if
nothing else it will confirm / deny if trim is involved.

    Regards
    Steve

----- Original Message ----- 
From: "Vitalij Satanivskij" <satan_at_ukr.net>
To: "Steven Hartland" <killing_at_multiplay.co.uk>
Cc: "Justin T. Gibbs" <gibbs_at_FreeBSD.org>; "Vitalij Satanivskij" <satan_at_ukr.net>; <freebsd-current_at_freebsd.org>; "Borja Marcos" 
<borjam_at_sarenet.es>; "Dmitriy Makarov" <supportme_at_ukr.net>
Sent: Thursday, October 17, 2013 7:12 AM
Subject: Re: ZFS secondarycache on SSD problem on r255173


> Hello.
>
> SSD is Intel SSD 530 series (INTEL SSDSC2BW180A4 DC12)
>
> Controler is onboard intel sata controler, motherboard is Supermicro X9SRL-F so it's Intel C602 chipset
>
> All cache ssd connected to sata 2 ports.
>
> System has LSI MPS controler (SAS2308) with firmware version - 16.00.00.00, but only hdd's (36 1TB WD RE4 drives)
> connected to it.
>
>
> Steven Hartland wrote:
> SH> Ohh stupid question what hardware are you running this on,
> SH> specifically what SSD's and what controller and if relavent
> SH> what controller Firmware version?
> SH>
> SH> I wonder if you might have bad HW / FW, such as older LSI
> SH> mps Firmware, which is know to causing corruption with
> SH> some delete methods.
> SH>
> SH> Without the ashift fixes, you'll be sending short requests
> SH> to the disk which will then ignore them, so I can see a
> SH> potential corrilation there.
> SH>
> SH> You could rule this out by disabling ZFS TRIM with
> SH> vfs.zfs.trim.enabled=0 in /boot/loader.conf
> SH>
> SH>     Regards
> SH>     Steve
> SH>
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