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.
60 lines
1.6 KiB
Go
60 lines
1.6 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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"github.com/prometheus/procfs/internal/util"
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)
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// ProcIO models the content of /proc/<pid>/io.
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type ProcIO struct {
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// Chars read.
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RChar uint64
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// Chars written.
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WChar uint64
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// Read syscalls.
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SyscR uint64
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// Write syscalls.
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SyscW uint64
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// Bytes read.
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ReadBytes uint64
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// Bytes written.
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WriteBytes uint64
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// Bytes written, but taking into account truncation. See
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// Documentation/filesystems/proc.txt in the kernel sources for
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// detailed explanation.
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CancelledWriteBytes int64
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}
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// IO creates a new ProcIO instance from a given Proc instance.
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func (p Proc) IO() (ProcIO, error) {
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pio := ProcIO{}
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data, err := util.ReadFileNoStat(p.path("io"))
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if err != nil {
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return pio, err
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}
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ioFormat := "rchar: %d\nwchar: %d\nsyscr: %d\nsyscw: %d\n" +
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"read_bytes: %d\nwrite_bytes: %d\n" +
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"cancelled_write_bytes: %d\n"
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_, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR,
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&pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes)
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return pio, err
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}
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