[CentOS] Hard disk activity will not die down

Mon Feb 3 21:13:03 UTC 2020
Laurent Wandrebeck <l.wandrebeck at quelquesmots.fr>


Ext4 is (slowly) initializing group blocks as far as I can remember. Patience should do the trick :)


Le 3 février 2020 20:28:27 GMT+01:00, Chris Pemberton <pchris.bci at gmail.com> a écrit :
>I updated my backup server this weekend from CentOS 7 to CentOS 8.
>OS disk is SSD, /dev/md0 are two 4TB WD mechanical drives.
>No hardware was changed.
>1. wiped all drives
>2. installed new copy of 8 on system SSD
>3. re-created the 4TB mirror /dev/md0 with the same WD mechanical
>4. created the largest single partition possible on /dev/md0 and
>it ext4
>5. waited several hours for the creation of /dev/md0 to finish
>6. copied all data back onto /dev/md0
>Both installs were a full workstation, with Gnome.
>The mirror is mounted via fstab as:
>/dev/md0 /mnt/raid1 ext4 defaults 0 0
>Under CentOS 7 the /dev/md0 mirror was silent when not in use.  Now
>8, the hard drives are constantly "pinged" by some process, at about
>same frequency as a heartbeat monitor.  I can not figure out what
>is keeping them active.  iotop does show a process named
>Is there something I've missed?
>CentOS mailing list
>CentOS at centos.org

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