diff options
Diffstat (limited to 'guestmetric/guestmetric_linux.go')
| -rw-r--r-- | guestmetric/guestmetric_linux.go | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/guestmetric/guestmetric_linux.go b/guestmetric/guestmetric_linux.go index b4553b2..6c656ea 100644 --- a/guestmetric/guestmetric_linux.go +++ b/guestmetric/guestmetric_linux.go @@ -201,16 +201,15 @@ func (c *Collector) CollectDisk() (GuestMetric, error) { real_dev := "" if c.Client != nil { nodename, err := readSysfs(fmt.Sprintf("/sys/block/%s/device/nodename", disk)) - if err != nil { - return nil, err - } - backend, err := c.Client.Read(fmt.Sprintf("%s/backend", nodename)) - if err != nil { - return nil, err - } - real_dev, err = c.Client.Read(fmt.Sprintf("%s/dev", backend)) - if err != nil { - return nil, err + if err == nil { + backend, err := c.Client.Read(fmt.Sprintf("%s/backend", nodename)) + if err != nil { + return nil, err + } + real_dev, err = c.Client.Read(fmt.Sprintf("%s/dev", backend)) + if err != nil { + return nil, err + } } } name := path |