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Checks a disk is writable and functioning properly by writing a tiny canary file with unique generated contents and then reading it back to make sure it was written properly. Useful to detect I/O errors and disks that have been re-mounted read-only as often happens when I/O errors in the disk subsystem are detected by the kernel.
Current Version
Last Release Date
December 9, 2013
Owner
Hari Sekhon
Website
https://github.com/harisekhon/nagios-plugins
Download URL
Compatible With
Part of the Advanced Nagios Plugins Collection.
Download it here:
./check_disk_write.pl -d /tmp OK: canary file I/O written => read back 51 bytes successfully in /tmp, unique contents verified
./check_disk_write.pl --help
usage: check_disk_write.pl [ options ]
-d --directory Directory to write the canary file to. Set this to a directory on the mount point of the disk you want to check -t --timeout Timeout in secs (default: 10) -v --verbose Verbose mode (-v, -vv, -vvv ...) -h --help Print description and usage options -V --version Print version and exit
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