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prepare indirect zfs transfer and multi-transfer

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shoopea
2023-08-22 13:23:48 +02:00
parent e7ed6cb2fd
commit 3b1d0fc850
4 changed files with 49 additions and 41 deletions
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59
box.go
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@@ -139,22 +139,39 @@ func (b *Box) Exec(cmd string) (r string, err error) {
return s.Exec(cmd)
}
func TransferZfs(from, to Addr) error {
func TransferZfs(from Addr, to []Addr) (int, error) {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("starting")
defer log.WithFields(log.Fields{"from": from, "to": to}).Debugf("done")
count := 0
dests := make([]Addr, 0)
for _, dest := range to {
if cfg.box[from.Box()].allowDirectConnect && cfg.box[dest.Box()].allowDirectConnect {
if err := TransferDirectZfs(from, dest); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "TransferDirectZfs", "attr": dest, "error": err}).Errorf("")
return count, err
} else {
count++
}
} else {
dests = append(dests, dest)
}
}
return count, nil
}
func TransferDirectZfs(from, to Addr) error {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("starting")
defer log.WithFields(log.Fields{"from": from, "to": to}).Debugf("done")
var (
err error
fromSnapshots, toSnapshots []*ZfsSnapshot
directTransfer bool
)
if cfg.box[from.Box()].allowDirectConnect && cfg.box[to.Box()].allowDirectConnect {
directTransfer = true
} else {
directTransfer = false
}
if fromSnapshots, err = from.ValidSnapshots(); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "ValidSnapshots", "attr": from, "error": err}).Errorf("")
return err
@@ -171,17 +188,13 @@ func TransferZfs(from, to Addr) error {
if len(toSnapshots) == 0 {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("initiating destination")
if directTransfer {
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send " + fromSnapshots[0].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
newToSnapshot := &ZfsSnapshot{name: fromSnapshots[0].name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]}
toSnapshots = append(toSnapshots, newToSnapshot)
cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(newToSnapshot)
} else {
//handle indirect transfer
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send " + fromSnapshots[0].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
newToSnapshot := &ZfsSnapshot{name: fromSnapshots[0].name, fs: cfg.box[to.Box()].zfs.filesystems[to.Path()]}
toSnapshots = append(toSnapshots, newToSnapshot)
cfg.box[to.Box()].zfs.filesystems[to.Path()].AddSnapshot(newToSnapshot)
}
@@ -204,13 +217,9 @@ func TransferZfs(from, to Addr) error {
if fromFromSnapshotId < len(fromSnapshots)-1 {
log.WithFields(log.Fields{"from": from, "to": to}).Debugf("transfering from %s to %s", fromSnapshots[fromFromSnapshotId].name, fromSnapshots[len(fromSnapshots)-1].name)
if directTransfer {
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send -I " + fromSnapshots[fromFromSnapshotId].String() + " " + fromSnapshots[len(fromSnapshots)-1].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
} else {
// handle indirect transfer
if _, err := to.BoxExec("ssh " + from.Box() + " zfs send -I " + fromSnapshots[fromFromSnapshotId].String() + " " + fromSnapshots[len(fromSnapshots)-1].String() + " | zfs recv -F " + to.Path()); err != nil {
log.WithFields(log.Fields{"from": from, "to": to, "call": "BoxExec", "error": err}).Errorf("")
return err
}
for _, v := range fromSnapshots[fromFromSnapshotId+1:] {