# Dmesg errors **URL:** \ **Category:** Red Hat\ **Created:** [April 5, 2015, 2:54am UTC](https://community.unix.com/t/dmesg-errors/351724 "2015-04-05T02:54:02Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jegaraman](https://community.unix.com/letter_avatar/jegaraman/32/6_449c533f586939b6e5f246632a46421f.png) [@jegaraman](https://community.unix.com/u/jegaraman)\ **Post date:** [April 5, 2015, 2:54am UTC](https://community.unix.com/t/dmesg-errors/351724/1 "2015-04-05T02:54:02Z")
Dear All , Very recently I find there are a lot of I/O errors in our Red HAt Linux Server. Pl find the below ```nohighlight end_request: I/O error, dev sdcp, sector 0 sd 7:0:0:32784: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdn, sector 0 sd 7:0:0:33289: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdo, sector 0 sd 7:0:0:33538: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdae, sector 0 sd 7:0:0:37404: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdau, sector 0 sd 7:0:0:41485: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdbk, sector 0 sd 7:0:0:45056: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdca, sector 0 sd 7:0:0:45824: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdcq, sector 0 sd 7:0:0:45056: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdca, sector 0 sd 7:0:0:33290: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdp, sector 0 sd 7:0:0:33552: SCSI error: return code = 0x00010000 ``` Kindly request you to let me know what to see regarding this. Thanks and Rgds., Rj ---
**Author:** ![sea](https://community.unix.com/user_avatar/community.unix.com/sea/32/2946_2.png) [@sea](https://community.unix.com/u/sea)\ **Post date:** [April 5, 2015, 4:03am UTC](https://community.unix.com/t/dmesg-errors/351724/2 "2015-04-05T04:03:51Z")
I'd suggest to boot of a livecd and run a fschk on /dev/sda. Did you try to mount your partitions using letters instead of numbers? hth ---
**Author:** ![jegaraman](https://community.unix.com/letter_avatar/jegaraman/32/6_449c533f586939b6e5f246632a46421f.png) [@jegaraman](https://community.unix.com/u/jegaraman)\ **Post date:** [April 5, 2015, 4:23am UTC](https://community.unix.com/t/dmesg-errors/351724/3 "2015-04-05T04:23:12Z")
Dear Sea , I will send the output below of the hard disk partitions . Pl find below ```nohighlight Disk /dev/sda: 440.0 GB, 440076861440 bytes 255 heads, 63 sectors/track, 53502 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 83 Linux /dev/sda2 14 53502 429650392+ 8e Linux LVM Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 380G 221G 140G 62% / /dev/sda1 99M 15M 80M 16% /boot tmpfs 7.7G 2.9G 4.9G 38% /dev/shm none 7.7G 40K 7.7G 1% /var/lib/xenstored /dev/mapper/vg01-mntvol 1007G 638G 319G 67% /mnt1 172.x.x.x.:/med/poll_d 597G 344G 238G 60% /med ``` I have not run fsck to it. Kindly let me know should i have to do it. And also , let me know is the disk issue or any thing else. Thanks and Regards , Rj ---
**Author:** ![Don\_Cragun](https://community.unix.com/user_avatar/community.unix.com/don_cragun/32/2682_2.png) [@Don\_Cragun](https://community.unix.com/u/Don_Cragun)\ **Post date:** [April 5, 2015, 5:12am UTC](https://community.unix.com/t/dmesg-errors/351724/4 "2015-04-05T05:12:53Z")
Moderator comments were removed during original forum migration. ---
**Author:** ![jegaraman](https://community.unix.com/letter_avatar/jegaraman/32/6_449c533f586939b6e5f246632a46421f.png) [@jegaraman](https://community.unix.com/u/jegaraman)\ **Post date:** [April 5, 2015, 5:26am UTC](https://community.unix.com/t/dmesg-errors/351724/5 "2015-04-05T05:26:18Z")
I am sorry don , out of urgency , i have posted like this...henceforth , will not do it. ---
**Author:** ![sea](https://community.unix.com/user_avatar/community.unix.com/sea/32/2946_2.png) [@sea](https://community.unix.com/u/sea)\ **Post date:** [April 5, 2015, 6:01am UTC](https://community.unix.com/t/dmesg-errors/351724/6 "2015-04-05T06:01:08Z")
Might been mislead by the 'sd' values... I'm no hardware guy, but what is the output of `lsscsi` ? ---
**Author:** ![jegaraman](https://community.unix.com/letter_avatar/jegaraman/32/6_449c533f586939b6e5f246632a46421f.png) [@jegaraman](https://community.unix.com/u/jegaraman)\ **Post date:** [April 6, 2015, 6:09am UTC](https://community.unix.com/t/dmesg-errors/351724/7 "2015-04-06T06:09:00Z")
Dear Sea , The command lsscsi is not available here .... Rgds Rj ---
**Author:** ![sea](https://community.unix.com/user_avatar/community.unix.com/sea/32/2946_2.png) [@sea](https://community.unix.com/u/sea)\ **Post date:** [April 6, 2015, 7:49am UTC](https://community.unix.com/t/dmesg-errors/351724/8 "2015-04-06T07:49:59Z")
As root: ```nohighlight yum install lsscsi ``` hth