Buffer I/o Error On Device Dm-15
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Buffer I O Error On Device Dm 0 Logical Block
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Kernel Buffer I O Error On Device
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Linux Buffer I O Error On Device
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Bad disk? Date: Wed, 10 Nov 2010 09:39:00 -0500 Yesterday I added a hard drive (to put extra stuff on it) to my ubuntu 10.10 box and created a LVM in it. Then buffer i o error on device sda copied some files to it and restarted the machine to see if it
Buffer I/o Error On Device Dm-3
would mount into the right mountpoint. It didn't. So I decided to see if it was there (vg in question buffer i/o error on device dm-0 logical block redhat is export): raub strangepork:~$ sudo vgscan Reading all physical volumes. This may take a while... /dev/dm-0: read failed after 0 of 4096 at 429496664064: Input/output error /dev/dm-0: read failed after 0 of 4096 http://www.linuxquestions.org/questions/linux-software-2/buffer-i-o-error-on-device-dm-0-a-4175512149/ at 429496721408: Input/output error /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error /dev/dm-0: read failed after 0 of 4096 at 4096: Input/output error /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error Found volume group "export" using metadata type lvm2 Found volume group "root" using metadata type lvm2 raub strangepork:~$ Those dm-0 messages do not make me happy. dmesg and vgchange make https://www.redhat.com/archives/linux-lvm/2010-November/msg00011.html me think the problem is on the new drive: [ 268.024593] scsi 0:0:0:0: Direct-Access ATA ST3500320NS SN04 PQ: 0 ANSI: 5 [ 268.024900] sd 0:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 268.024918] sd 0:0:0:0: Attached scsi generic sg2 type 0 [ 268.024996] sd 0:0:0:0: [sdc] Write Protect is off [ 268.025003] sd 0:0:0:0: [sdc] Mode Sense: 00 3a 00 00 [ 268.025046] sd 0:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 268.025377] sdc: sdc1 [ 268.049853] sd 0:0:0:0: [sdc] Attached SCSI disk [ 335.467482] quiet_error: 3 callbacks suppressed [ 335.467492] Buffer I/O error on device dm-0, logical block 104857584 [ 335.467540] Buffer I/O error on device dm-0, logical block 104857584 [ 335.467589] Buffer I/O error on device dm-0, logical block 104857598 [ 335.467615] Buffer I/O error on device dm-0, logical block 104857598 [ 335.467647] Buffer I/O error on device dm-0, logical block 0 [ 335.467671] Buffer I/O error on device dm-0, logical block 0 [ 335.467703] Buffer I/O error on device dm-0, logical block 1 [ 335.467734] Buffer I/O error on device dm-0, logical block 104857599 [ 335.467762] Buffer I/O error on device dm-0, logical block 104857599 [
- How to Rebuild Linux LVM Date: Sun, 3 Dec 2006 16:04:18 +1100 Hi, I have done something foolish and would like to know if my error is https://www.redhat.com/archives/linux-lvm/2006-December/msg00002.html recoverable. I have a locally connected hardware raid controller (Adaptec 2410SA) which running https://www.redhat.com/archives/dm-devel/2006-March/msg00160.html in Raid 5 with 3 x 500G drives and a total capacity of 935GB. The array is recognised in the OS [FC5] as /dev/sdd. I have LVM running on /dev/sdd with a Volume Group "NewVolGroup" and Logical Volume "NewLV" I intended to do the following: 1. Add another drive to the error on hardware array expanding its capacity from ~936MB to ~1.36TB 2. In the hardware raid controller keep the existing logical device [/dev/sdd] at 936MB and create a new logical device [dev/sde] to absorb the spare capacity. 3. Add a new PV /dev/sde to NewVolGroup 4. Expand the capacity of NewVolGroup hopefully all without data loss. What I actually did (in error) was extend the error on device logical device in the raid array to a total capacity of 1.36TB instead of adding the new capacity as a new logical device. Now LVM is all screwed up as it is expecting to find a PV of 936MB capacity not 1.36TB at /dev/sdd My question is can I recover this LVM group or have I lost the data and need to start again (groan). The volume group in question is /dev/NewVolGroup/NewLV. The physical raid device is /dev/sdd. I am getting device mapper errors left right and centre. I assume I need to restore the PV metadata but maybe that is pointless given it is no longer pointing to a volume of the same size. Failing a solution my next step is to fry the partition and recreate the LVM. Some detail follows. I have limited raid and lvm experience so any thoughts welcome. Tom ############################## [root ~]# mount /dev/NewVolGroup/NewLV /newdir mount: you must specify the filesystem type [root ~]# tail /var/log/messages Nov 29 15:59:41 syd001 kernel: Buffer I/O error on device dm-2, logical block 0 Nov 29 15:59:41 syd001 kernel: Buffer I/O error on device dm-2, logical bloc
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