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Report the result of the disk compaction step

This commit is contained in:
DanHam 2018-04-24 22:14:37 +01:00
parent 10d93dffa4
commit 08f9d619a9
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GPG Key ID: 58E79AEDD6AA987E
1 changed files with 33 additions and 2 deletions
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35
builder/vmware/common/step_compact_disk.go
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@ -4,6 +4,8 @@ import (
"context"
"fmt"
"log"
"math"
"os"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
@ -33,13 +35,42 @@ func (s StepCompactDisk) Run(_ context.Context, state multistep.StateBag) multis
return multistep.ActionContinue
}
ui.Say("Compacting all attached disk images")
ui.Say("Compacting all attached virtual disks...")
for i, diskPath := range diskPaths {
ui.Message(fmt.Sprintf("Compacting disk image %d", i+1))
ui.Message(fmt.Sprintf("Compacting virtual disk %d", i+1))
// Get the file size of the virtual disk prior to compaction
fi, err := os.Stat(diskPath)
if err != nil {
state.Put("error", fmt.Errorf("Error getting virtual disk file info pre compaction: %s", err))
return multistep.ActionHalt
}
diskFileSizeStart := fi.Size()
// Defragment and compact the disk
if err := driver.CompactDisk(diskPath); err != nil {
state.Put("error", fmt.Errorf("Error compacting disk: %s", err))
return multistep.ActionHalt
}
// Get the file size of the virtual disk post compaction
fi, err = os.Stat(diskPath)
if err != nil {
state.Put("error", fmt.Errorf("Error getting virtual disk file info post compaction: %s", err))
return multistep.ActionHalt
}
diskFileSizeEnd := fi.Size()
// Report compaction results
log.Printf("Before compaction the disk file size was: %d", diskFileSizeStart)
log.Printf("After compaction the disk file size was: %d", diskFileSizeEnd)
if diskFileSizeStart > 0 {
percentChange := ((float64(diskFileSizeEnd) / float64(diskFileSizeStart)) * 100.0) - 100.0
switch {
case percentChange < 0:
ui.Message(fmt.Sprintf("Compacting reduced the disk file size by %.2f%%", math.Abs(percentChange)))
case percentChange == 0:
ui.Message(fmt.Sprintf("The compacting operation left the disk file size unchanged"))
case percentChange > 0:
ui.Message(fmt.Sprintf("WARNING: Compacting increased the disk file size by %.2f%%", percentChange))
}
}
}
return multistep.ActionContinue