Buffer I/o Error On Device Dm-3 Logical Block
Contents |
Customer Profit Analyzer Internet Gateway Application ICE Workstations Backups Faxing Printers Thin Clients Virtualization Scanners Outbound Email Services Linux Technical Support Advisories ECLA-20110330-1 buffer i/o error on device dm-3 logical block 0 Search Search for: Recent Posts Best practices for securing the Eclipse
Buffer I/o Error On Device Dm-4 Logical Block
database server Badlock Security Alert How to set the destination of the backup report email? DROWN buffer i/o error on device dm-2 logical block SSL Security Alert March 2016 Configure Postfix Relay with Google Apps Popular Posts How do I reboot my AIX server? How do I access Dell OpenManage? How do
Buffer I/o Error On Device Dm-1
I find my AIX server’s IP address? How do I manage Linux print queues? How do I increase the size of my AIX dump device? Links Eclipse Support Site Admin Can I safely ignore I/O errors on dm devices? The root user of a system using may occasionally receive a message similar to the following in the daily buffer i o error on device sdb logical block logwatch email: --------------------- Kernel Begin ------------------------ WARNING: Kernel Errors Present Buffer I/O error on device dm-7, ...: 11 Time(s) EXT3-fs error (device dm-7): e ...: 90 Time(s) lost page write due to I/O error on dm-7 ...: 11 Time(s) Likewise, you may notice similar error messages in the /var/log/messages file: May 16 04:04:52 eclipse kernel: lost page write due to I/O error on dm-20 May 16 04:04:52 eclipse kernel: Buffer I/O error on device dm-20, logical block 0 May 16 04:04:52 eclipse kernel: lost page write due to I/O error on dm-20 May 16 04:04:52 eclipse kernel: Buffer I/O error on device dm-20, logical block 0 May 16 04:04:52 eclipse kernel: lost page write due to I/O error on dm-20 May 16 04:04:52 eclipse kernel: Buffer I/O error on device dm-20, logical block 0 May 16 04:04:52 eclipse kernel: lost page write due to I/O error on dm-20 If the device mapper (dm-n) device(s) mentioned in the messages refer to a snapshot logical volume (LV
- 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 recoverable. I have a https://www.redhat.com/archives/linux-lvm/2006-December/msg00002.html locally connected hardware raid controller (Adaptec 2410SA) which running 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 http://unix.stackexchange.com/questions/98208/i-o-errors-on-linux-lvm 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 hardware array expanding its capacity from ~936MB error on 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 logical device in the raid array to a total capacity of 1.36TB error on device 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 block 1 Nov 29 15:59:41 syd001 kernel: Buffer I/O error on device dm-2, logical block 2 Nov 29 15:59:41 syd001 kernel: Buffer I/O e
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top I/O errors on Linux LVM up vote 4 down vote favorite I have a CentOS 6 box with LVM setup and one of the PVs is a USB disk (I know). One of them is getting the error: Oct 30 10:57:07 alpha01 kernel: lost page write due to I/O error on dm-3 Oct 30 10:57:07 alpha01 kernel: Buffer I/O error on device dm-3, logical block 4 Which is causing problems with all of the LVs on it. pvs shows the PV as unknown device. I can ls to the logical volumes and they show up in lvdisplay, but first I get a bunch of IO errors. I made sure the cables are secure between the USB drive. What should I do to get this back up and running for the meanwhile? Should I unmount each LV and run an fsck.ext4 on each one like fsck.ext4 -y /dev/vg1/lv_logvolname ? linux lvm fsck share|improve this question asked Oct 30 '13 at 15:06 Gregg Leventhal 2,29032752 In addition to fsck, if the external drive is SMART capable, checking the drive status/health and running the drive self tests may be useful. Backing up all the data may also be important. –rickhg12hs Oct 30 '13 at 15:44 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted I usually don't go the route of running an fsck and assume the disk is failing or has bad sectors. I definitely wouldn't run the fsck using the -y, since this will give fsck to attempt to start moving blocks which may exacerbate the problem. Instead I'll run a tool such as Spinrite (Commercial) or HDAT2 (freeware) on the disk to do the analysis & potential repair. What else? See my other answers to these questions for additional methods: fsck -cc /dev/sdb1 gives this result. Is everything okay> Detect damaged audio CD The 2nd link provides details about another tool, safecopy for attempting to r