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ipnlocal/drive: reduce noisey per-peer remote logs (#19493)

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This drops the per peer "appending remote" log while constructing the remote list, which can get noisy on big tailnets, and keeps logs around remote availability checks, including whether a peer is missing, offline, lacks PeerAPI reachability, lacks sharing permission, or is available.

Updates tailscale/corp#40580

Signed-off-by: kari-ts <kari@tailscale.com>
This commit is contained in:
kari-ts 2026-04-24 08:26:33 -07:00 committed by GitHub
parent ad9e6c1925
commit aa740cb393
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GPG Key ID: B5690EEEBB952194
1 changed files with 12 additions and 12 deletions
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24
ipn/ipnlocal/drive.go
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@ -303,18 +303,19 @@ func (b *LocalBackend) updateDrivePeersLocked(nm *netmap.NetworkMap) {
}
func (b *LocalBackend) driveRemotesFromPeers(nm *netmap.NetworkMap) []*drive.Remote {
b.logf("[v1] taildrive: setting up drive remotes from peers")
b.logf("[v1] taildrive: setting up drive remotes from %d peers", len(nm.Peers))
driveRemotes := make([]*drive.Remote, 0, len(nm.Peers))
for _, p := range nm.Peers {
peer := p
peerID := peer.ID()
peerKey := peer.Key().ShortString()
b.logf("[v1] taildrive: appending remote for peer %s", peerKey)
peerName := peer.DisplayName(false)
driveRemotes = append(driveRemotes, &drive.Remote{
Name: p.DisplayName(false),
Name: peerName,
URL: func() string {
url := fmt.Sprintf("%s/%s", b.currentNode().PeerAPIBase(peer), taildrivePrefix[1:])
b.logf("[v2] taildrive: url for peer %s: %s", peerKey, url)
b.logf("[v2] taildrive: url for peer %s (%s): %s", peerKey, peerName, url)
return url
},
Available: func() bool {
@ -325,7 +326,7 @@ func (b *LocalBackend) driveRemotesFromPeers(nm *netmap.NetworkMap) []*drive.Rem
cn := b.currentNode()
peer, ok := cn.NodeByID(peerID)
if !ok {
b.logf("[v2] taildrive: Available(): peer %s not found", peerKey)
b.logf("[v2] taildrive: peer %s (%s, id=%v) not found", peerKey, peerName, peerID)
return false
}
@ -338,26 +339,25 @@ func (b *LocalBackend) driveRemotesFromPeers(nm *netmap.NetworkMap) []*drive.Rem
// The netmap.Peers slice is not updated in all cases.
// It should be fixed now that we use PeerByIDOk.
if !peer.Online().Get() {
b.logf("[v2] taildrive: Available(): peer %s offline", peerKey)
b.logf("[v2] taildrive: peer %s (%s, id=%v) offline", peerKey, peerName, peerID)
return false
}
if b.currentNode().PeerAPIBase(peer) == "" {
b.logf("[v2] taildrive: Available(): peer %s PeerAPI unreachable", peerKey)
if cn.PeerAPIBase(peer) == "" {
b.logf("[v2] taildrive: peer %s (%s, id=%v) PeerAPI unreachable", peerKey, peerName, peerID)
return false
}
// Check that the peer is allowed to share with us.
if cn.PeerHasCap(peer, tailcfg.PeerCapabilityTaildriveSharer) {
b.logf("[v2] taildrive: Available(): peer %s available", peerKey)
b.logf("[v2] taildrive: peer %s (%s, id=%v) available", peerKey, peerName, peerID)
return true
}
b.logf("[v2] taildrive: Available(): peer %s not allowed to share", peerKey)
b.logf("[v2] taildrive: peer %s (%s, id=%v) not allowed to share", peerKey, peerName, peerID)
return false
},
})
}
b.logf("[v1] taildrive: built %d candidate remotes", len(driveRemotes))
return driveRemotes
}