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make the convert retryable in case it takes a bit to release a lock

This commit is contained in:
Megan Marsh 2018-06-28 14:21:28 -07:00
parent 7915f2db25
commit 2b2c860df8
1 changed files with 28 additions and 5 deletions
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33
builder/qemu/step_convert_disk.go
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@ -4,7 +4,9 @@ import (
"context"
"fmt"
"path/filepath"
"strings"
"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
@ -46,11 +48,32 @@ func (s *stepConvertDisk) Run(_ context.Context, state multistep.StateBag) multi
)
ui.Say("Converting hard drive...")
if err := driver.QemuImg(command...); err != nil {
err := fmt.Errorf("Error converting hard drive: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
// Retry the conversion a few times in case it takes the qemu process a
// moment to release the lock
err := common.Retry(1, 10, 10, func(_ uint) (bool, error) {
if err := driver.QemuImg(command...); err != nil {
if strings.Contains(err.Error(), `Failed to get shared "write" lock`) {
ui.Say("Error getting file lock for conversion; retrying...")
return false, nil
}
err = fmt.Errorf("Error converting hard drive: %s", err)
return true, err
}
return true, nil
})
if err != nil {
if err == common.RetryExhaustedError {
err = fmt.Errorf("Exhausted retries for getting file lock: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
} else {
err := fmt.Errorf("Error converting hard drive: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
if err := os.Rename(targetPath, sourcePath); err != nil {