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omv:disk-check [2015/11/06 02:32] admin |
omv:disk-check [2015/11/12 16:45] (current) admin [Hard Drives Health Checks] |
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| ====== Hard Drives Health Checks ====== | ====== Hard Drives Health Checks ====== | ||
| - | When one builds a NAS, specifically on a tight budget, it might well happen that used hard drives are used to fill the hard disk bay... | + | When one builds a NAS, specifically on a tight budget, it might well happen that "second hand" hard drives are used to fill the hard disk bay... |
| One important thing to do before trusting those drives to safely store your precious data is to check their health. Here are a few command tools that can be used to performs such checks. | One important thing to do before trusting those drives to safely store your precious data is to check their health. Here are a few command tools that can be used to performs such checks. | ||
| - | The following was collected in [[http://linuxpoison.blogspot.be/2008/01/howto-check-disk-drive-for-errors-and.html|this blogspot article]], as well as in [[http://linoxide.com/linux-how-to/how-to-fix-repair-bad-blocks-in-linux/|this LinOxyde one]]. | + | The following was collected from [[http://linuxpoison.blogspot.be/2008/01/howto-check-disk-drive-for-errors-and.html|this blogspot article]], as well as from [[http://linoxide.com/linux-how-to/how-to-fix-repair-bad-blocks-in-linux/|this one on LinOxyde]]. |
| ===== badblocks ===== | ===== badblocks ===== | ||
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| </code> | </code> | ||
| - | badblocks will check a hard drive and log defective sectors to a file that can be used with other programs, like mkfs, so that they will be locked out of usage. | + | badblocks will check a hard drive and log defective sectors to a file that can be used with other programs, like //**mkfs**//, so that they will be locked out of usage. |
| <code> | <code> | ||
| > sudo badblocks -v /dev/hda1 > hda1-bad-blocks | > sudo badblocks -v /dev/hda1 > hda1-bad-blocks | ||
| + | </code> | ||
| + | |||
| + | //badblocks// isn't particularly verbose, so if one wants to (more or less) monitor it's activity, iostat can help visualize disk activity: | ||
| + | <code> | ||
| + | > sudo apt-get install sysstat | ||
| + | </code> | ||
| + | |||
| + | To monitor activity per disk: | ||
| + | <code> | ||
| + | > sudo iostat -xd <update interval in seconds> | ||
| + | </code> | ||
| + | |||
| + | To monitor activity per partition: | ||
| + | <code> | ||
| + | > sudo iostat -pxd <update interval in seconds> | ||
| </code> | </code> | ||
