[CentOS] rescheduling sector linux raid ?
Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792231 raid1: sda1: rescheduling sector 451792168 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 note lines: sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror Is one disk going down? cat /proc/mdstat still shows software raid array as working one. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
At Mon, 14 Feb 2011 20:13:31 +0200 CentOS mailing list centos@centos.org wrote: Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792231 raid1: sda1: rescheduling sector 451792168 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 note lines: sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror Is one disk going down? cat /proc/mdstat still shows software raid array as working one. One disk is probably starting to fail. Are you getting SMART errors? Have a look in /var/log/messages for smartd messages as well as kernel I/O errors. -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
take a closer look at the message it states: end_request: I/O error, dev sda, sector 451792263 this usually indicates there is corruption on the disk. the meaning is quite simple, you have a problem with your first disk /dev/sda , and you need to investigate it further. first of all run a smartctl --all /dev/sda look for FAIL messages, this will help indicate the cause of the I/O error. second step - to be sure its a bad disk ( sometimes it's not actually the disk ). check the cable connecting the disk , and replace it with a fresh one if available. also, i would recommend to check the power cable/supply this might cause I/O errors also. On Mon, Feb 14, 2011 at 8:39 PM, Robert Heller hel...@deepsoft.com wrote: At Mon, 14 Feb 2011 20:13:31 +0200 CentOS mailing list centos@centos.org wrote: Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792231 raid1: sda1: rescheduling sector 451792168 sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 20 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 note lines: sd 0:0:0:0: SCSI error: return code = 0x0600 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror Is one disk going down? cat /proc/mdstat still shows software raid array as working one. One disk is probably starting to fail. Are you getting SMART errors? Have a look in /var/log/messages for smartd messages as well as kernel I/O errors. -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Best Regards, Yonatan Pingle RHCT | RHCSA | CCNA1 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
end_request: I/O error, dev sda, sector 451792231 You should run: smartctl -a /dev/sda Look for something like this line: Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 If that last value is greater than 0, replace the drive... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
2011/2/14 compdoc comp...@hotrodpc.com: end_request: I/O error, dev sda, sector 451792231 You should run: smartctl -a /dev/sda Look for something like this line: Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 If that last value is greater than 0, replace the drive... Value is 0, on both drives. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
Value is 0, on both drives. It's still possible to have a bad sector, but not have it show up in the Reallocated Sector Count. What does this line say: Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 Is the last value greater than zero? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
2011/2/14 compdoc comp...@hotrodpc.com: Value is 0, on both drives. It's still possible to have a bad sector, but not have it show up in the Reallocated Sector Count. What does this line say: Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 Is the last value greater than zero? last value is 0, on both drives. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
last value is 0, on both drives. Looks to me like Smart thinks the drives are fine. Are they over-heating? What drives are they? Have a model number? Ever run memtest86+ on the system? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rescheduling sector linux raid ?
2011/2/14 compdoc comp...@hotrodpc.com: last value is 0, on both drives. Looks to me like Smart thinks the drives are fine. Are they over-heating? Hard to say, system is about 4++ years old :) What drives are they? Have a model number? maybe it just wise to install new server.. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
