From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Scobie Subject: Reallocating sd device Date: Tue, 10 Jun 2008 07:49:09 +1200 Message-ID: <484D8935.70905@sauce.co.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.sauce.co.nz ([210.48.49.72]:55479 "EHLO smtp.sauce.co.nz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753344AbYFITqy (ORCPT ); Mon, 9 Jun 2008 15:46:54 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Testing a 16 SATA drive (/dev/sd[c-r]1), md RAID, with drives installed in a hotswap SAS/SATA enclosure. Failed out /dev/sdd1, ejected the drive from the enclosure, reinserted it and the system added it back as /dev/sds: Jun 9 11:24:37 flash2 kernel: mptsas: ioc0: removing sata device, channel 0, id 30, phy 5 Jun 9 11:24:37 flash2 kernel: sd 4:0:1:0: [sdd] Synchronizing SCSI cache Jun 9 11:24:37 flash2 kernel: sd 4:0:1:0: [sdd] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK Jun 9 11:26:38 flash2 kernel: mptsas: ioc0: attaching sata device, channel 0, id 30, phy 5 Jun 9 11:26:38 flash2 kernel: scsi 4:0:17:0: Direct-Access ATA WDC WD7500AYYS-0 4G30 PQ: 0 ANSI: 5 Jun 9 11:26:38 flash2 kernel: sd 4:0:17:0: [sds] 1465149168 512-byte hardware sectors (750156 MB) Rebooting shows the offline drive back as /dev/sdd. Is there a safe, (OK to do on a mounted, active array), way of changing the sds back to sdd, prior to adding it back into the array, without having to reboot? Regards, Richard