mdadm Centos 5 automatic resync

This made me nervous but it's clearly a cronjob based on the messages log that happens every Sunday at about 4:22.

I actually can't find any evidence of it in cron.d cron.daily but it is there somewhere obviously.

What I don't get is why doesn't this cronjob do a datacheck like Ubuntu's cronscript does?  When you unnecessarily rebuild the array you lose your redundancy during that point which makes your data extremely vulnerable.

*Update I did a grep of "mdadm" in etc but this wouldnt' have come up.

I found the following script is responsible for this "/etc/cron.weekly/99-raid-check".  It gets its config from /etc/sysconfig/raidcheck

 

Jan  9 04:22:01 server05 kernel: md: syncing RAID array md1
Jan  9 04:22:01 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jan  9 04:22:01 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jan  9 04:22:01 server05 kernel: md: using 128k window, over a total of 29302464 blocks.
Jan  9 04:22:01 server05 kernel: md: delaying resync of md2 until md1 has finished resync (they share one or more physical units)
Jan  9 04:27:00 server05 kernel: md: md1: sync done.
Jan  9 04:27:00 server05 kernel: md: syncing RAID array md2
Jan  9 04:27:00 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jan  9 04:27:00 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jan  9 04:27:00 server05 kernel: md: using 128k window, over a total of 488287552 blocks.
Jan  9 06:30:18 server05 kernel: md: md2: sync done.
Jan  2 04:22:01 server05 kernel: md: syncing RAID array md1
Jan  2 04:22:01 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jan  2 04:22:01 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jan  2 04:22:01 server05 kernel: md: using 128k window, over a total of 29302464 blocks.
Jan  2 04:26:57 server05 kernel: md: md1: sync done.
Dec 26 04:22:01 server05 kernel: md: syncing RAID array md1
Dec 26 04:22:01 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Dec 26 04:22:01 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Dec 26 04:22:01 server05 kernel: md: using 128k window, over a total of 29302464 blocks.
Dec 26 04:26:44 server05 kernel: md: md1: sync done.
Dec 19 04:22:01 server05 kernel: md: syncing RAID array md1
Dec 19 04:22:01 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Dec 19 04:22:01 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Dec 19 04:22:01 server05 kernel: md: using 128k window, over a total of 29302464 blocks.
Dec 19 04:22:01 server05 kernel: md: delaying resync of md2 until md1 has finished resync (they share one or more physical units)
Dec 19 04:27:05 server05 kernel: md: md1: sync done.
Dec 19 04:27:05 server05 kernel: md: syncing RAID array md2
Dec 19 04:27:05 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Dec 19 04:27:05 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Dec 19 04:27:05 server05 kernel: md: using 128k window, over a total of 488287552 blocks.
Dec 19 06:28:14 server05 kernel: md: md2: sync done.
Dec 12 04:22:01 server05 kernel: md: syncing RAID array md1
Dec 12 04:22:01 server05 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Dec 12 04:22:01 server05 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Dec 12 04:22:01 server05 kernel: md: using 128k window, over a total of 29302464 blocks.
Dec 12 04:26:44 server05 kernel: md: md1: sync done.


Tags:

mdadm, centos, resyncthis, cronjob, cron, doesn, datacheck, ubuntu, cronscript, unnecessarily, rebuild, array, redundancy, update, grep, quot, etc, wouldnt, weekly, raid, config, sysconfig, raidcheck, server, kernel, md, syncing, _guaranteed_, reconstruction, kb, disc, maximum, idle, io, bandwidth, delaying, resync, sync, dec,

Latest Articles

  • ssh Too many authentication failures not prompting for password
  • LightDM Mint Ubuntu Debian won't start errors Nvidia Graphics
  • WARNING: Unable to determine the path to install the libglvnd EGL vendor library config files. Check that you have pkg-config and the libglvnd development libraries installed, or specify a path with --glvnd-egl-config-path. Linux Ubuntu Mint Debian E
  • How To Upgrade Linux Mint 18.2 to 18.3 to 19.x and 20.x
  • MP3s Won't Play / ID3 Version 2.4 Issues in Cars and Other MP3 Players/CDs/DVDs Solution
  • LXC Containers LXD How to Install and Configure Tutorial Ubuntu Debian Mint
  • GlusterFS HowTo Tutorial For Distributed Storage in Docker, Kubernetes, LXC, KVM, Proxmox
  • Ubuntu Mint audio output not working pulseaudio "pulseaudio[13710]: [pulseaudio] sink-input.c: Failed to create sink input: too many inputs per sink."
  • How To Shrink Dynamically Allocated VM QEMU KVM VMware Disk Image File
  • How To Enable Linux Swapfile Instead of Partition Ubuntu Mint Debian Centos
  • 404 Not Found [IP: 151.101.194.132 80] apt update Debian 11 Bullseye Solution The repository 'http://security.debian.org bullseye/updates Release' does not have a Release file.
  • WARNING: Can't download daily.cvd from db.local.clamav.net freshclam clamav error solution
  • (firefox:9562): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Failed to execute child process "dbus-launch" (No such file or directory) Solution
  • Debian Mint Ubuntu Which Package Provides missing top, ps and w Solution
  • Vbox Virtualbox DNS NAT Network Mode NOT working
  • Docker Tutorial HowTo Install Docker, Use and Create Docker Container Images Clustering Swarm Mode Monitoring Service Hosting Provider
  • Zoom Password Error 'That passcode was incorrect' - Solution Wrong Passcode Wrong Meeting Name
  • How To Startup and Open Remote/Local Folder/Directory in Ubuntu Linux Mint automatically upon login
  • How To Reset Windows Server Password 2019, 2022, 7, 8, 10, 11 Recovery and Removal Guide Using Linux Ubuntu Mint Debian
  • How To Create OpenVPN Server for Secure Remote Corporate Access in Linux Debian/Mint/Ubuntu with client public key authentication