From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: Which raid card to buy for Sarge Date: Thu, 01 Apr 2004 12:03:12 +0400 Sender: linux-raid-owner@vger.kernel.org Message-ID: <406BCCC0.8070104@wasp.net.au> References: <406B9F3E.4020701@wasp.net.au> <406BAC2F.8090407@pobox.com> <406BAF18.8010005@wasp.net.au> <20040401074921.GA27234@bluff> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20040401074921.GA27234@bluff> To: Sandro Dentella Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Sandro Dentella wrote: > On Thu, Apr 01, 2004 at 09:56:40AM +0400, Brad Campbell wrote: > >>Jeff Garzik wrote: >> >> >>>>it out and insert the new drive in the array. The array starts >>>>rebuilding - no effect on the uptime and only a slight loss in >>>>throughput. Plus it's seamless. >>> >>>Yeah, md+mdadm can do all this right now, provided the hardware and >>>driver support is there... >>> >> >>Yes, my point however is for low budget stuff with software raid the driver >>support is not yet there in a vanilla kernel. >>I can't just whack a sata drive off one of my promise SATA150-TX4 >>controllers, pop another one in and have the kernel rescan the partition >>table and realise a new drive was present. (YET!) > > > I'm sort of confused... which are the combinations that allow me to hotswap a > disk w/ software raid. I don't mind doing some mdadm operations, I'm just > interested in how I can avoid rebooting. > > I thought I couldn't, now I learn you can "provided the hardware and driver > support is there"... can you detail a little more? Yup. Currently, SCSI has the hardware and driver support. SATA has the hardware support, but not the driver support (Yet). Regards, Brad