1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
package driver
import (
"fmt"
"os"
"path/filepath"
"strconv"
"strings"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/util"
)
// Implements Mounter
type seaweedFsMounter struct {
volumeID string
path string
collection string
readOnly bool
driver *SeaweedFsDriver
volContext map[string]string
}
type seaweedFsUnmounter struct {
unmounter Unmounter
cacheDir string
}
const (
seaweedFsCmd = "weed"
)
func newSeaweedFsMounter(volumeID string, path string, collection string, readOnly bool, driver *SeaweedFsDriver, volContext map[string]string) (Mounter, error) {
return &seaweedFsMounter{
volumeID: volumeID,
path: path,
collection: collection,
readOnly: readOnly,
driver: driver,
volContext: volContext,
}, nil
}
func (seaweedFs *seaweedFsMounter) Mount(target string) (Unmounter, error) {
glog.V(0).Infof("mounting %v %s to %s", seaweedFs.driver.filers, seaweedFs.path, target)
var filers []string
for _, address := range seaweedFs.driver.filers {
filers = append(filers, string(address))
}
// CacheDir should be always defined - we use temp dir in case it is not defined
// we need to use predictable cache path, because we need to clean it up on unstage
cacheDir := filepath.Join(seaweedFs.driver.CacheDir, seaweedFs.volumeID)
// Final args
args := []string{
"-logtostderr=true",
"mount",
"-dirAutoCreate=true",
"-umask=000",
fmt.Sprintf("-dir=%s", target),
fmt.Sprintf("-localSocket=%s", GetLocalSocket(seaweedFs.volumeID)),
fmt.Sprintf("-cacheDir=%s", cacheDir),
}
if seaweedFs.readOnly {
args = append(args, "-readOnly")
}
// Handle volumeCapacity from controllerserver.go:51
if value, ok := seaweedFs.volContext["volumeCapacity"]; ok{
capacityMB := parseVolumeCapacity(value)
args = append(args, fmt.Sprintf("-collectionQuotaMB=%d", capacityMB))
}
// Values for override-able args
// Whitelist for merging with volContext
argsMap := map[string]string {
"collection": seaweedFs.collection,
"filer": strings.Join(filers, ","),
"filer.path": seaweedFs.path,
"cacheCapacityMB": fmt.Sprint(seaweedFs.driver.CacheCapacityMB),
"concurrentWriters": fmt.Sprint(seaweedFs.driver.ConcurrentWriters),
"map.uid": seaweedFs.driver.UidMap,
"map.gid": seaweedFs.driver.GidMap,
"disk": "",
"dataCenter": "",
"replication": "",
"ttl": "",
"chunkSizeLimitMB": "",
"volumeServerAccess": "",
"readRetryTime": "",
}
// volContext-parameter -> mount-arg
parameterArgMap := map[string]string{
"uidMap": "map.uid",
"gidMap": "map.gid",
"filerPath": "filer.path",
// volumeContext has "diskType", but mount-option is "disk", converting for backwards compatability
"diskType": "disk",
}
// Explicitly ignored volContext args e.g. handled somewhere else
ignoreArgs := []string{
"volumeCapacity",
}
// Merge volContext into argsMap with key-mapping
for arg, value := range seaweedFs.volContext {
if(in_arr(ignoreArgs, arg)){continue}
// Check if key-mapping exists
newArg, ok := parameterArgMap[arg]
if(ok){
arg = newArg
}
// Check if arg can be applied
if _, ok := argsMap[arg]; !ok {
glog.Warningf("VolumeContext '%s' ignored", arg)
continue
}
// Write to args-map
argsMap[arg] = value
}
// Convert Args-Map to args
for arg, value := range argsMap{
if(value != ""){ // ignore empty values
args = append(args, fmt.Sprintf("-%s=%s", arg, value))
}
}
u, err := fuseMount(target, seaweedFsCmd, args)
if err != nil {
glog.Errorf("mount %v %s to %s: %s", seaweedFs.driver.filers, seaweedFs.path, target, err)
}
return &seaweedFsUnmounter{unmounter: u, cacheDir: cacheDir}, err
}
func (su *seaweedFsUnmounter) Unmount() error {
err := su.unmounter.Unmount()
_ = os.RemoveAll(su.cacheDir)
return err
}
func GetLocalSocket(volumeID string) string {
montDirHash := util.HashToInt32([]byte(volumeID))
if montDirHash < 0 {
montDirHash = -montDirHash
}
socket := fmt.Sprintf("/tmp/seaweedfs-mount-%d.sock", montDirHash)
return socket
}
func parseVolumeCapacity(volumeCapacity string) int64 {
var capacity int64
if vCap, err := strconv.ParseInt(volumeCapacity, 10, 64); err != nil {
glog.Errorf("volumeCapacity %s can not be parsed to Int64, err is: %v", volumeCapacity, err)
} else {
capacity = vCap
}
capacityMB := capacity / 1024 / 1024
return capacityMB
}
func in_arr(arr []string, val string) bool {
for _, v := range arr {
if(val == v) {
return true
}
}
return false
}
|
