From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 9 May 2001 09:35:10 +0000 From: "Heinz J. Mauelshagen" Subject: Re: [linux-lvm] SCSI/LVM problems after power outage Message-ID: <20010509093510.B4918@sistina.com> References: Mime-Version: 1.0 In-Reply-To: ; from Evan.Day@SUMMITSITE.COM on Tue, May 08, 2001 at 02:05:16PM -0700 Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Tue, May 08, 2001 at 02:05:16PM -0700, Day, Evan wrote: > It looks like device 2 is having issues: > > SCSI disk error : host 2 channel 0 id 2 lun 0 return code = 18000002 > > However, it has been several years since I worked with Sun machines, so I > could be wrong. Regardless, it doesn't sound like an LVM issue, but a > hardware issue. Unfortunately, I can't offer much recovery advice - most of > my LVM experience is with HP-UX, and we use mirroring (RAID-1) at work - > just unplug the bad drive, plug in a new one, and do a vgsync. I think you > can add a replacement drive to the VG and use pvmove to try and move the PEs > from the bad drive to the new drive, but I wouldn't take my word for it... In case the PEs on the flaky device are still readable: extending your VG and using pvmove is the way to go. Steps needed (crossing your fingers that the flaky drive can still stand this): - install or use an additional drive of at least the size of the flaky one - pvcreate that drive - vgextend the VG by it - pvmove /dev/FlakyDrive - wait until pvmove is done - vgreduce VG /dev/FlakyDrive You should have your LVs offline in case you have an older version than LVM 0.9.1 Beta 7, because they had a pvmove related bug which could cause oopses when you moved PEs in use. BTW: you need to configure MD (RAID 1 or 5) or use hardware raid subsystems to avoid suffering from such flaky disk problems. Regards, Heinz -- The LVM Guy -- > > -----Original Message----- > From: Dave Wapstra [mailto:dave@xs4all.nl] > Sent: Tuesday, May 08, 2001 9:33 AM > To: linux-lvm@sistina.com > Subject: [linux-lvm] SCSI/LVM problems after power outage > > > Hi all, > > After a power outage, our ftp server with LVM has not survived very well. > > System: UltraSparc II, Linux 2.4(2) + io.path + LVM 0.9.1beta6 > > All normal ext2 paritions were fsck'd fine, however, the volume is having > problems. > > The syslog has a lot of SCSI errors: > > May 7 19:15:52 ftp kernel: sym53c8xx_reset: pid=0 reset_flags=1 > serial_number=0 serial_number_at_timeout=0 > Read ahead sectors 120 > Block device 58:0 > > > -Dave > > -- > Dave Wapstra > dave@xs4all.nl > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-