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Format RBD volumes with nodiscard formatting options.

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Currently rbd CSI plugin uses formatAndMount of
mount.SafeFormatAndMount. This does not allow to pass or use
specific formatting arguments with it. This patch introduce
RBD specific formatting options with both xfs and ext4,
for example: -E no-discard with ext4 and -k option with
XFS to boost formatting performance of RBD device.

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
(cherry picked from commit 0e6617e1ff)
This commit is contained in:
Humble Chirammal
2019-09-19 22:41:32 +05:30
parent 61db816a89
commit d1c8cce659
3 changed files with 34 additions and 3 deletions
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20
pkg/rbd/nodeserver.go
View File

@ -313,9 +313,27 @@ func (ns *NodeServer) mountVolumeToStagePath(ctx context.Context, req *csi.NodeS
// Publish Path
fsType := req.GetVolumeCapability().GetMount().GetFsType()
diskMounter := &mount.SafeFormatAndMount{Interface: ns.mounter, Exec: mount.NewOsExec()}
existingFormat, err := diskMounter.GetDiskFormat(devicePath)
if err != nil {
klog.Errorf(util.Log(ctx, "failed to get disk format for path %s, error: %v"), devicePath, err)
return err
}
if existingFormat == "" && (fsType == "ext4" || fsType == "xfs") {
args := []string{}
if fsType == "ext4" {
args = []string{"-m0", "-Enodiscard", devicePath}
} else if fsType == "xfs" {
args = []string{"-K", devicePath}
}
_, err = diskMounter.Exec.Run("mkfs."+fsType, args...)
if err != nil {
klog.Errorf(util.Log(ctx, "failed to run mkfs, error: %v"), err)
return err
}
}
opt := []string{}
isBlock := req.GetVolumeCapability().GetBlock() != nil
var err error
if isBlock {
opt = append(opt, "bind")