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Old 01-07-2013, 07:38 AM   #1
captain118
LQ Newbie
 
Registered: Jan 2013
Distribution: Centos
Posts: 6

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Question Unknown mount point in Centos 5.6


When I do a iostat -x, I see a disk (sdc) that is being utilized at 3.4%. However, when I run mount I do not see the disk mounted. When I look at the partition information about that disk it looks like a os disk. However sda is the os disk. When I run mount it clearly shows this. Any idea what this disk could be? Is there a command other than mount that I can use to see the mounted partitions? I have used this box for years for testing so it could be something obscure.

iostat:
Code:
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.29    0.20    0.68    2.59    0.00   96.24

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda               0.06     0.01  0.07  0.00     3.02     0.06    46.40     0.00    4.13   3.29   0.02
sda1              0.01     0.00  0.01  0.00     0.79     0.00    83.43     0.00    3.13   2.36   0.00
sda2              0.01     0.00  0.00  0.00     0.01     0.00    54.50     0.00    5.64   3.17   0.00
sda3              0.00     0.00  0.00  0.00     0.00     0.00    55.61     0.00    5.99   5.65   0.00
sda4              0.00     0.00  0.00  0.00     0.00     0.00     2.00     0.00    0.93   0.93   0.00
sda5              0.04     0.01  0.06  0.00     2.22     0.06    40.22     0.00    4.30   3.45   0.02
sdb               0.00     0.00  0.00  0.00     0.01     0.00    13.40     0.00    6.95   5.64   0.00
sdc               1.77    78.18  2.96 42.86   106.04   968.31    23.45     0.06    1.22   0.75   3.41
sdc1              0.00     0.00  0.00  0.00     0.01     0.00    63.46     0.00    6.41   3.93   0.00
sdc2              1.75    78.18  2.96 42.86   106.02   968.31    23.45     0.06    1.22   0.75   3.41
sdc3              0.01     0.00  0.00  0.00     0.01     0.00    76.92     0.00    1.39   1.07   0.00
sdc4              0.00     0.00  0.00  0.00     0.01     0.00    56.51     0.00    3.03   1.73   0.00
sdd               0.00     0.00  0.00  0.00     0.01     0.00    13.42     0.00    1.87   1.61   0.00
sde               0.00     0.00  0.00  0.00     0.21     0.00   116.27     0.00    2.83   2.75   0.00
sde1              0.00     0.00  0.00  0.00     0.21     0.00   117.64     0.00    2.84   2.77   0.00
hdc               0.00     0.00  0.00  0.00     0.00     0.00     8.15     0.00  177.96 177.88   0.00
dm-0              0.00     0.00  0.00  0.00     0.20     0.00    82.98     0.00    8.12   1.98   0.00
dm-1              0.00     0.00  0.00  0.00     0.00     0.00     3.74     0.00   15.79   0.67   0.00
dm-2              0.00     0.00  0.00  0.00     0.01     0.00     3.29     0.00    8.86   1.72   0.00
mount:
Code:
/dev/sda2 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda5 on /home type ext3 (rw)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/mapper/VG1-LV1 on /data type xfs (rw)
/dev/mapper/VG2_backup-LV2_backup on /backup type xfs (rw)
/dev/mapper/VG_aidedb-LV_aidedb on /mnt/LV_aidedb type xfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
none on /proc/fs/vmblock/mountPoint type vmblock (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/hdc on /media/CentOS_5.6_Final type iso9660 (ro,nosuid,nodev,uid=0)
Thanks

Last edited by captain118; 01-07-2013 at 08:43 AM. Reason: Better Display of iostat command results
 
Old 01-07-2013, 07:58 AM   #2
acid_kewpie
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Distribution: Gentoo, RHEL, Fedora, Centos
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fdisk -l /dev/sdc would probably fill in some of the gaps for you.
 
Old 01-07-2013, 08:38 AM   #3
captain118
LQ Newbie
 
Registered: Jan 2013
Distribution: Centos
Posts: 6

Original Poster
Rep: Reputation: Disabled
Partition

Thats the command I used to determine that the partition structure looked like the os disk. I was wondering if it could be a mirror of the base os or something like that. But it would have to be a software raid and I'm not sure how I would see something like that.

Code:
Disk /dev/sdc: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1          12       96358+  83  Linux
/dev/sdc2              13        2623    20972857+  83  Linux
/dev/sdc3            2624        2880     2064352+  82  Linux swap / Solaris
/dev/sdc4            2881        9407    52428127+  83  Linux
Thanks.

Last edited by captain118; 01-07-2013 at 08:57 AM. Reason: Provide more info.
 
Old 01-10-2013, 08:47 AM   #4
captain118
LQ Newbie
 
Registered: Jan 2013
Distribution: Centos
Posts: 6

Original Poster
Rep: Reputation: Disabled
I have made progress. It is acting like sda is the base os and all the changes made past the point that puppet was installed are being stored on sdc. Does anyone know if this is even possible?
 
  


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