Buffer I/o Error On Device Dm-4 Logical Block 0
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Buffer I O Error On Device Sdb Logical Block 0
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Buffer I O Error On Device Sdc1 Logical Block
Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 07-24-2014, 09:59 AM #1 MikeyCarter Member Registered: Feb 2003 Location: Orangeville Distribution: Fedora Posts: 465 Rep: Buffer I/O error on device dm-0 [ 7947.411100]
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Buffer I/o Error On Device Dm-0 Logical Block Redhat
my AIX server? How do I access Dell OpenManage? How do I find my AIX server’s IP address? How do I manage Linux print queues? How do I increase the size of my http://www.linuxquestions.org/questions/linux-software-2/buffer-i-o-error-on-device-dm-0-a-4175512149/ 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 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 http://kb.eclipseinc.com/kb/can-i-safely-ignore-io-errors-on-dm-devices/ 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), these messages can be ignored. By their definition, snapshot LVs are temporal in nature; they are created, destroyed and expire when changes written to them exceed their predefined capacity. To determine if the dm device points to a snapshot LV: First, locate the "dm" device number in the logs (in our example, 20): [root@eclipse ~]# grep "I/O error" /var/log/messages May 16 04:04:52 eclipse kernel: Buffer I/O er
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 http://unix.stackexchange.com/questions/98208/i-o-errors-on-linux-lvm 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 error on 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 error on device 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 recover data from a fai