[CentOS] Broken output for fdisk -l

[Johnny Hughes]

On 07/12/2016 11:52 AM, Hersh wrote:
> Hi,
> 
> There was some problem with our system so I re-installed the server with
> CentOS 7. Now, when I am trying to run 'fdisk -l' command, it is returning
> a broken output.
> 
> It throws this error- "fdisk: cannot open /dev/sdc: Input/output error".
> 
> There are valid /dev/sdd and /dev/sde devices which are mounted and they
> are accessible but, somehow /dev/sdc is having a problem and 'fdisk -l' is
> not returning the full output.
> 
> Below is an output of fdisk -l for reference. Any suggestion on how to fix
> this would be very helpful.
> 
> ----------------------------
> 
> [root at localhost ~]# fdisk -l
> 
> Disk /dev/sda: 1932.7 GB, 1932735283200 bytes, 3774873600 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk label type: dos
> Disk identifier: 0x0004118b
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *        2048     1026047      512000   83  Linux
> /dev/sda2         1026048  3774873599  1886923776   8e  Linux LVM
> 
> Disk /dev/sdb: 1664.6 GB, 1664568262656 bytes, 3251109888 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk label type: dos
> Disk identifier: 0x00000081
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1   *          63  3251106179  1625553058+  83  Linux
> fdisk: cannot open /dev/sdc: Input/output error
> [root at localhost ~]#
> [root at localhost ~]# df -h
> Filesystem                  Size  Used Avail Use% Mounted on
> /dev/mapper/centos-root      50G  4.8G   46G  10% /
> devtmpfs                     63G     0   63G   0% /dev
> tmpfs                        63G  300K   63G   1% /dev/shm
> tmpfs                        63G   18M   63G   1% /run
> tmpfs                        63G     0   63G   0% /sys/fs/cgroup
> /dev/mapper/MD3200-results   19T  9.0T  9.3T  50% /data/results
> /dev/sdb1                   1.5T  234M  1.5T   1% /share
> /dev/mapper/centos-home     1.8T  5.5G  1.7T   1% /home
> /dev/sda1                   497M  158M  340M  32% /boot
> tmpfs                        13G   32K   13G   1% /run/user/1000
> tmpfs                        13G   36K   13G   1% /run/user/0
> /dev/sde                    917G  625G  247G  72% /media/usb
> [root at localhost ~]# fdisk -l /dev/sdc
> fdisk: cannot open /dev/sdc: Input/output error
> [root at localhost ~]#

Sounds like a bad drive.  I would start by looking for errors in
/var/log/messages and dmesg.

You could check the connection cable if anyone has had the machine open.



-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: OpenPGP digital signature
URL: <http://lists.centos.org/pipermail/centos/attachments/20160712/8256a4b5/attachment.sig>