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Fix several btrfs driver error messages 

Several of the error messages were wrong, but not one of them was helpful, so this fixes them to include the important information (the actual error), and a correct description of which operation failed.

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
This commit is contained in:
Tianon Gravi 2014-02-01 23:52:52 -07:00
parent a446b34719
commit f7f8e3c2b3
1 changed files with 3 additions and 3 deletions
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6
graphdriver/btrfs/btrfs.go
View File

@ -99,7 +99,7 @@ func subvolCreate(path, name string) error {
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(dir), C.BTRFS_IOC_SUBVOL_CREATE,
uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return fmt.Errorf("Can't create subvolume")
return fmt.Errorf("Failed to create btrfs subvolume: %v", errno.Error())
}
return nil
}
@ -126,7 +126,7 @@ func subvolSnapshot(src, dest, name string) error {
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(destDir), C.BTRFS_IOC_SNAP_CREATE_V2,
uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return fmt.Errorf("Can't create subvolume")
return fmt.Errorf("Failed to create btrfs snapshot: %v", errno.Error())
}
return nil
}
@ -146,7 +146,7 @@ func subvolDelete(path, name string) error {
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(dir), C.BTRFS_IOC_SNAP_DESTROY,
uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return fmt.Errorf("Can't create subvolume")
return fmt.Errorf("Failed to destroy btrfs snapshot: %v", errno.Error())
}
return nil
}