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devmapper: use proper DM_UDEV_DISABLE_*_FLAG when creating the thin-pool

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Otherwise udev can unecessarily execute various rules (and issue
scanning IO, etc) against the thin-pool -- which can never be a
top-level device.

Docker-DCO-1.1-Signed-off-by: Mike Snitzer <snitzer@redhat.com> (github: snitm)
This commit is contained in:
Mike Snitzer 2014-10-30 20:26:39 -04:00
parent 42861f3b45
commit ad6467f9e1
2 changed files with 8 additions and 1 deletions
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3
pkg/devicemapper/devmapper.go
View file

@ -361,7 +361,8 @@ func CreatePool(poolName string, dataFile, metadataFile *os.File, poolBlockSize
}
var cookie uint = 0
if err := task.SetCookie(&cookie, 0); err != nil {
var flags uint16 = DmUdevDisableSubsystemRulesFlag | DmUdevDisableDiskRulesFlag | DmUdevDisableOtherRulesFlag
if err := task.SetCookie(&cookie, flags); err != nil {
return fmt.Errorf("Can't set cookie %s", err)
}

6
pkg/devicemapper/devmapper_wrapper.go
View file

@ -82,6 +82,12 @@ const (
LoNameSize = C.LO_NAME_SIZE
)
const (
DmUdevDisableSubsystemRulesFlag = C.DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG
DmUdevDisableDiskRulesFlag = C.DM_UDEV_DISABLE_DISK_RULES_FLAG
DmUdevDisableOtherRulesFlag = C.DM_UDEV_DISABLE_OTHER_RULES_FLAG
)
var (
DmGetLibraryVersion = dmGetLibraryVersionFct
DmGetNextTarget = dmGetNextTargetFct