mirror of
https://github.com/hanzoai/volume.git
synced 2026-10-01 00:48:00 +00:00
zeekay
b61441f7d7
A fork of Rancher's local-path-provisioner at v0.0.36. The behaviour is unchanged and deliberately so — a directory on the node a pod lands on is the right thing for a disk. What changes is identity. The provisioner answers to hanzo.ai/volume rather than rancher.io/local-path. That is not branding: two provisioners sharing one name race for the same claims, and a stock k3s carries the upstream one, so a cluster running both would settle our storage by chance. Data lives at /var/lib/hanzo/volume, so reading a Hanzo cluster does not mean learning another vendor's directory. Apache-2.0 as published, unaltered, with Rancher's attribution in NOTICE. The README says what this is not: durability. A volume here dies with its node. That is hanzoai/replicate's question, one layer up, and keeping the two apart is what lets the disk stay this simple.
69 lines
1.9 KiB
Go
69 lines
1.9 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package procfs
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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)
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// Namespace represents a single namespace of a process.
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type Namespace struct {
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Type string // Namespace type.
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Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match.
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}
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// Namespaces contains all of the namespaces that the process is contained in.
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type Namespaces map[string]Namespace
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// Namespaces reads from /proc/<pid>/ns/* to get the namespaces of which the
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// process is a member.
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func (p Proc) Namespaces() (Namespaces, error) {
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d, err := os.Open(p.path("ns"))
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if err != nil {
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return nil, err
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}
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defer d.Close()
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names, err := d.Readdirnames(-1)
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if err != nil {
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return nil, fmt.Errorf("%w: failed to read contents of ns dir: %w", ErrFileRead, err)
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}
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ns := make(Namespaces, len(names))
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for _, name := range names {
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target, err := os.Readlink(p.path("ns", name))
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if err != nil {
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return nil, err
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}
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fields := strings.SplitN(target, ":", 2)
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if len(fields) != 2 {
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return nil, fmt.Errorf("%w: namespace type and inode from %q", ErrFileParse, target)
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}
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typ := fields[0]
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inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32)
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if err != nil {
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return nil, fmt.Errorf("%w: inode from %q: %w", ErrFileParse, fields[1], err)
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}
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ns[name] = Namespace{typ, uint32(inode)}
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}
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return ns, nil
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}
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