Date: Fri, 20 Feb 2015 11:21:35 +0000 From: Dr Josef Karthauser <joe@tao.org.uk> To: Bob Bishop <rb@gid.co.uk> Cc: stable@freebsd.org Subject: Re: ada drives keep timing out! Message-ID: <1BFD18FF-D3A7-4230-9425-CEDC7DC94181@tao.org.uk> In-Reply-To: <938BC03E-2C47-4381-9D21-5849E9E6E126@gid.co.uk> References: <064CF905-DF19-40A7-8CE8-D9FFE17913EE@tao.org.uk> <938BC03E-2C47-4381-9D21-5849E9E6E126@gid.co.uk>
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> On 20 Feb 2015, at 11:14, Bob Bishop <rb@gid.co.uk> wrote: >=20 > Hi, >=20 >> On 20 Feb 2015, at 10:34, Dr Josef Karthauser <joe@tao.org.uk> wrote: >>=20 >> Hi there, >>=20 >> I reported this last year, but I=E2=80=99d like to revisit it as it = must have a software remedy. I know that I=E2=80=99m not the only one to = have reported the problem. >>=20 >> I have a ZFS pool with a number of western digital drives in it (WDC = WD1000FYPS-01ZKB0 02.01B01). >=20 > WD Green Power drives. I've had similar problems, sometimes they take = a looooong time to come ready; the controller times out waiting for = drive ready and the rest you know. >=20 > Depending on the controller there may be nothing you can do. Maybe = it's possible to turn off the drives's green features. I replaced the = drives with something that works.=20 >=20 Hi Bob, In this case other report no such issues on the same hardware running = Linux, so it seems to me to be an internal timeout issue within FreeBSD, = or maybe Linux retries more than FreeBSD and so doesn=E2=80=99t = experience the issue that we do. It=E2=80=99s clear that FreeBSD is = proactively disconnecting the drive when the timeout occurs. So, maybe = there=E2=80=99s something that can be done there. Joe=
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