From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Linux Software RAID is really RAID? Date: Tue, 03 Jul 2007 17:15:32 +0900 Message-ID: <468A05A4.60006@gmail.com> References: <46815C3F.6090204@wasp.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <46815C3F.6090204@wasp.net.au> Sender: linux-ide-owner@vger.kernel.org To: Brad Campbell Cc: Johny Mail list , linux-raid@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-raid.ids Brad Campbell wrote: > Johny Mail list wrote: >> Hello list, >> I have a little question about software RAID on Linux. >> I have installed Software Raid on all my SC1425 servers DELL by >> believing that the md raid was a strong driver. >> And recently i make some test on a server and try to view if the RAID >> hard drive power failure work fine, so i power up my server and after >> booting and the prompt appear I disconnected the power cable of my >> SATA hard drive. Normaly the MD should eleminate the failure hard >> drive of the logical drive it build, and the server continue to work >> fine like nothing happen. Oddly the server stop to respond and i get >> this messages : >> ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen >> ata4.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0 >> res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) >> ata4: port is slow to respond, please be patient (Status 0xd0) >> ata4: port failed to respond (30sec, Status 0xd0) >> ata4: soft resetting port >> >> After that my system is frozen. How hard is it frozen? Can you blink the Numlock LED? -- tejun