Added new disk subcommand that tests disk speed.
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This commit is contained in:
Gregory Ballantine 2022-02-25 23:09:56 -05:00
parent fdfc1ac3b1
commit f3cc52c90e
2 changed files with 54 additions and 0 deletions

53
cmd/disk.go Normal file
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@ -0,0 +1,53 @@
package cmd
import (
"fmt"
"log"
"os"
"os/exec"
"github.com/spf13/cobra"
)
var (
size int
tempfile string
)
var diskCmd = &cobra.Command{
Use: "disk",
Short: "Disk speed test.",
Long: "Uses the local 'dd' command to test a disk's speed",
Run: func(cmd *cobra.Command, args []string) {
_, err := exec.LookPath("dd")
if err != nil {
panic(err)
}
// get number of blocks to write (1M * 1024 * number of Gigabytes)
blocksCount := fmt.Sprintf("count=%d", (size * 1024))
// get outfile path
outfile := fmt.Sprintf("of=%s", tempfile)
ddCmd := exec.Command("dd", "bs=1M", blocksCount, "if=/dev/zero", outfile)
ddCmd.Stderr = os.Stdout
err = ddCmd.Run()
if err != nil {
log.Fatalf("cmd.Run() failed with %s\n", err)
}
fileErr := os.Remove(tempfile)
if fileErr != nil {
fmt.Println(fileErr)
}
},
}
func init() {
// link flags to variables
diskCmd.Flags().IntVarP(&size, "size", "s", 10, "Size of the file to write, in Gigabytes.")
diskCmd.Flags().StringVarP(&tempfile, "tempfile", "t", "./tempfile", "Where to store the tempfile.")
// add ping command to the main program
rootCmd.AddCommand(diskCmd)
}

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@ -38,6 +38,7 @@ var pingCmd = &cobra.Command{
}
func init() {
// link flags to variables
pingCmd.Flags().StringVarP(&host, "host", "a", "8.8.8.8", "Host to attempt pinging.")
pingCmd.Flags().IntVarP(&count, "count", "c", 50, "Number of pings to send.")