Topic
  • 2 replies
  • Latest Post - ‏2012-05-21T22:32:47Z by UNIX-OS
UNIX-OS
UNIX-OS
4 Posts

Pinned topic Read/Write activity on backup file system disk

‏2012-05-06T02:43:08Z |
Hi,

we collect iostat every 30 seconds, I see IO (read & write) activity on backup file system, there should no activity during day time, backup jobs runs only early morning. mounted backup file system with noatime option, so there no access time update. server is running AIX 6.1 TL 4.

I see this activity on all the backup file system, What is this IO activity? how can we find which process doing this io activity?


Disks:                     xfers                                read                                write                                  queue                    time -------------- -------------------------------- ------------------------------------ ------------------------------------ -------------------------------------- --------- %tm    bps   tps  bread  bwrtn   rps    avg    min    max time fail   wps    avg    min    max time fail    avg    min    max   avg   avg  serv hdisk59          0.0 136.4    0.0   0.0  136.4    0.0   0.0    0.0    0.0     0    0   0.0   0.4    0.4    0.4     0    0   0.0    0.0    0.0    0.0   0.0   0.0  16:25:34 hdisk59          0.0 136.4    0.0   0.0  136.4    0.0   0.0    0.0    0.0     0    0   0.0   0.4    0.4    0.4     0    0   0.0 0.0    0.0    0.0   0.0   0.0  16:26:34 hdisk59          0.0 136.4    0.0   0.0  136.4    0.0   0.0    0.0    0.0     0    0   0.0   0.4    0.4    0.4     0    0   0.0    0.0    0.0    0.0   0.0   0.0  16:27:34 hdisk59          0.0 136.5    0.0   0.0  136.5    0.0   0.0    0.0    0.0     0    0   0.0   0.4    0.4    0.4     0    0   0.0    0.0    0.0    0.0   0.0   0.0  16:28:34 hdisk59          0.0 136.4    0.0   0.0  136.4    0.0   0.0    0.0    0.0     0    0   0.0   0.5    0.5    0.5     0    0   0.0    0.0    0.0    0.0   0.0   0.0  16:29:34 hdisk59          0.0  34.1    0.1  34.1    0.0    0.1   2.5    0.3    4.7     0    0   0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0   0.0   0.0  22:27:35 hdisk59          0.0  17.0    0.0  17.0    0.0    0.0   0.3    0.3    0.3     0    0   0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0   0.0   0.0  22:28:05 hdisk59          0.0  17.0    0.0  17.0    0.0    0.0   0.2    0.2    0.2     0    0   0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0   0.0   0.0  22:28:35 hdisk59          0.0  17.1    0.0  17.1    0.0    0.0   0.3    0.3    0.3     0    0   0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0   0.0   0.0  22:29:05 hdisk59          0.0  17.0    0.0  17.0    0.0    0.0   0.3    0.3    0.3     0    0   0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0   0.0   0.0  22:29:35
Updated on 2012-05-21T22:32:47Z at 2012-05-21T22:32:47Z by UNIX-OS
  • SystemAdmin
    SystemAdmin
    2402 Posts

    Re: Read/Write activity on backup file system disk

    ‏2012-05-20T19:56:13Z  
    Hi,

    Which iostat command options did you use ?
  • UNIX-OS
    UNIX-OS
    4 Posts

    Re: Read/Write activity on backup file system disk

    ‏2012-05-21T22:32:47Z  
    Hi,

    Which iostat command options did you use ?
    I used this command
    
    iostat -TVlt 30