Last Updated: 14 Mar 2026

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server-tech:centos:adding-formatting-a-new-drive [Mar 14, 2026 05:15 PM]
114.119.143.233 old revision restored (Feb 7, 2024 11:36 AM) 		server-tech:centos:adding-formatting-a-new-drive [Mar 15, 2026 01:08 AM] (current)
43.173.178.209 old revision restored (Nov 4, 2025 12:24 AM)
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 If you don't see the disk from the first bus, you may need to scan the others: If you don't see the disk from the first bus, you may need to scan the others:
 +
 +''# echo "- - -" > /sys/class/scsi_host/host1/scan''
  
 ''# echo "- - -" > /sys/class/scsi_host/host2/scan'' ''# echo "- - -" > /sys/class/scsi_host/host2/scan''
-''# echo "- - -" > /sys/class/scsi_host/host3/scan'' 
  
 Eventually the disk should show up in /var/log/messages. Let's assume it is ''/dev/sdb'' Eventually the disk should show up in /var/log/messages. Let's assume it is ''/dev/sdb''
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 ''# lvcreate -l 100%VG -n data mysql'' ''# lvcreate -l 100%VG -n data mysql''
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 +== Formatting & Mounting the Disk ==
  
 6. Make the XFS filesystem: 6. Make the XFS filesystem:
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 9. If you want the drive to mount at boot, add an entry in ''/etc/fstab'' 9. If you want the drive to mount at boot, add an entry in ''/etc/fstab''
 +
 +You're done. If you want to see if your new drive is online, check ''df -h'' and you should see it.