From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Ceuleers Subject: Re: Preventative replacement of active RAID1 disks Date: Sat, 21 Jan 2012 18:01:42 +0100 Message-ID: <4F1AEF76.8000200@gmail.com> References: <4F16FB90.5000905@gmail.com> <4F1AE34D.8030209@iki.fi> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4F1AE34D.8030209@iki.fi> Sender: linux-raid-owner@vger.kernel.org To: Anssi Hannula Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 01/21/2012 05:09 PM, Anssi Hannula wrote: > Model Family: Seagate Barracuda 7200.12 family >> Device Model: ST3500418AS >> 7 Seek_Error_Rate 0x000f 079 060 030 Pre-fail >> Always - 97304022 > [...] > > I don't think these indicate any issue with the drives, all of my > Seagate disks have random big values in that attribute (from 11717390 to > 103488378525). Thanks for your response. Perhaps the Seek_Error_Rate isn't what's wrong, but something's definitely wrong. The read performance on these disks is _extremely_ poor. I've decided to go ahead with the replacement, and the first of the resyncs is progressing at an erratic rate, anywhere between 30MB/s and 17kB/s. At this rate it'll take 24h.