On Mon, Jun 24, 2019 at 03:42:24PM +0000, Chris Olson via CentOS wrote:
> We have a very old Dell desk top machine that has been running
> CentOS 6 for the past five years. It received a new, 1 TB disk
> and additional memory before the OS installation. It has been
> the primary Linux machine in our smallest and most remote field
> office. It has been updated at least once a week and has all
> current dates installed.
>
> Boot-up this morning lasted about six times as long as usual.
> Disk access, as indicated by the disk activity light, is almost
> continuous and for extended periods of time when ever something
> is done that requires the disk. Everything observed happens
> whether or not the machine is connected to our network. All of
> our files appear to be accessible if one is patient.
>
> One theory put forward is that some application is running that
> uses up CPU and disk bandwidth. Another theory is that thereare disk errors, mostly corrected by EDCS features. We do not
> see any rogue applications and error logs show no disk issues.
>
> This is a mysterious issue that we hope to circumvent by putting
> a new disk and installing CentOS 7 from DVD. Our hope is that
> the current disk can be mounted externally on the new CentOS
> system using a USB to SATA adapter and that data can be moved
> off of the old disk.
>
> Advice regarding this issue and any possible diagnostic methods
> will be greatly appreciated.
>
> df -k output:
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Filesystem 1K-blocks Used Available Use% Mounted on
> /dev/mapper/vg_delle520-lv_root
> 51475068 12110896 36742732 25% /
> tmpfs 1928152 176 1927976 1% /dev/shm
> /dev/sda1 487652 211073 250979 46% /boot
> /dev/mapper/vg_delle520-lv_home
> 905124888 246856176 612284356 29% /home
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
If it had not been booted in a while, it may have been running
the file system check (fsck) program. I think if fsck has not
been run in 6 months, it automatically happens at boot.
jl
--
Jon H. LaBadie jon@xxxxxxxxxx
11226 South Shore Rd. (703) 787-0688 (H)
Reston, VA 20190 (703) 935-6720 (C)
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