src/tools/disks/zpool_status.rs: parse zpool status output
This commit is contained in:
parent
2fd3d57490
commit
0727e56a06
|
@ -23,6 +23,8 @@ use crate::api2::types::{BLOCKDEVICE_NAME_REGEX, StorageStatus};
|
|||
|
||||
mod zfs;
|
||||
pub use zfs::*;
|
||||
mod zpool_status;
|
||||
pub use zpool_status::*;
|
||||
mod lvm;
|
||||
pub use lvm::*;
|
||||
mod smart;
|
||||
|
|
|
@ -0,0 +1,290 @@
|
|||
use anyhow::{bail, Error};
|
||||
use serde_json::{json, Value};
|
||||
use ::serde::{Deserialize, Serialize};
|
||||
|
||||
use nom::{
|
||||
error::VerboseError,
|
||||
bytes::complete::{tag, take_while, take_while1},
|
||||
combinator::{map_res, all_consuming, recognize, opt},
|
||||
sequence::{preceded},
|
||||
character::complete::{digit1, line_ending},
|
||||
multi::{many0},
|
||||
};
|
||||
|
||||
type IResult<I, O, E = VerboseError<I>> = Result<(I, O), nom::Err<E>>;
|
||||
|
||||
/// Recognizes zero or more spaces and tabs (but not carage returns or line feeds)
|
||||
fn multispace0(i: &str) -> IResult<&str, &str> {
|
||||
take_while(|c| c == ' ' || c == '\t')(i)
|
||||
}
|
||||
|
||||
// Recognizes one or more spaces and tabs (but not carage returns or line feeds)
|
||||
fn multispace1(i: &str) -> IResult<&str, &str> {
|
||||
take_while1(|c| c == ' ' || c == '\t')(i)
|
||||
}
|
||||
|
||||
/// Recognizes one or more non-whitespace-characters
|
||||
fn notspace1(i: &str) -> IResult<&str, &str> {
|
||||
take_while1(|c| !(c == ' ' || c == '\t' || c == '\n'))(i)
|
||||
}
|
||||
|
||||
fn parse_u64(i: &str) -> IResult<&str, u64> {
|
||||
map_res(recognize(digit1), str::parse)(i)
|
||||
}
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub struct ZFSPoolVDevState {
|
||||
pub name: String,
|
||||
pub lvl: u64,
|
||||
pub state: String,
|
||||
pub read: u64,
|
||||
pub write: u64,
|
||||
pub cksum: u64,
|
||||
#[serde(skip_serializing_if="Option::is_none")]
|
||||
pub msg: Option<String>,
|
||||
}
|
||||
|
||||
fn parse_zpool_status_vdev(i: &str) -> IResult<&str, ZFSPoolVDevState> {
|
||||
|
||||
let (i, indent) = multispace0(i)?;
|
||||
let (i, vdev_name) = notspace1(i)?;
|
||||
let (i, state) = preceded(multispace1, notspace1)(i)?;
|
||||
let (i, read) = preceded(multispace1, parse_u64)(i)?;
|
||||
let (i, write) = preceded(multispace1, parse_u64)(i)?;
|
||||
let (i, cksum) = preceded(multispace1, parse_u64)(i)?;
|
||||
let (i, msg) = opt(preceded(multispace1, take_while(|c| c != '\n')))(i)?;
|
||||
let (i, _) = line_ending(i)?;
|
||||
|
||||
let vdev = ZFSPoolVDevState {
|
||||
name: vdev_name.to_string(),
|
||||
lvl: (indent.len() as u64)/2,
|
||||
state: state.to_string(),
|
||||
read, write, cksum,
|
||||
msg: msg.map(String::from),
|
||||
};
|
||||
|
||||
Ok((i, vdev))
|
||||
}
|
||||
|
||||
fn parse_zpool_status_tree(i: &str) -> IResult<&str, Vec<ZFSPoolVDevState>> {
|
||||
|
||||
// skip header
|
||||
let (i, _) = tag("NAME")(i)?;
|
||||
let (i, _) = multispace1(i)?;
|
||||
let (i, _) = tag("STATE")(i)?;
|
||||
let (i, _) = multispace1(i)?;
|
||||
let (i, _) = tag("READ")(i)?;
|
||||
let (i, _) = multispace1(i)?;
|
||||
let (i, _) = tag("WRITE")(i)?;
|
||||
let (i, _) = multispace1(i)?;
|
||||
let (i, _) = tag("CKSUM")(i)?;
|
||||
let (i, _) = line_ending(i)?;
|
||||
|
||||
// parse vdev list
|
||||
many0(parse_zpool_status_vdev)(i)
|
||||
}
|
||||
|
||||
fn parse_zpool_status_field(i: &str) -> IResult<&str, (String, String)> {
|
||||
let (i, prefix) = take_while1(|c| c != ':')(i)?;
|
||||
let (i, _) = tag(":")(i)?;
|
||||
let (i, mut value) = take_while(|c| c != '\n')(i)?;
|
||||
if value.starts_with(' ') { value = &value[1..]; }
|
||||
|
||||
let (mut i, _) = line_ending(i)?;
|
||||
|
||||
let field = prefix.trim().to_string();
|
||||
|
||||
let indent = (0..prefix.len()+2).fold(String::new(), |mut acc, _| { acc.push(' '); acc });
|
||||
|
||||
let parse_continuation = opt(preceded(tag(indent.as_str()), take_while1(|c| c != '\n')));
|
||||
|
||||
let mut value = value.to_string();
|
||||
|
||||
if field == "config" {
|
||||
let (n, _) = line_ending(i)?;
|
||||
i = n;
|
||||
}
|
||||
|
||||
loop {
|
||||
let (n, cont) = parse_continuation(i)?;
|
||||
|
||||
if let Some(cont) = cont {
|
||||
let (n, _) = line_ending(n)?;
|
||||
i = n;
|
||||
if !value.is_empty() { value.push('\n'); }
|
||||
value.push_str(cont);
|
||||
} else {
|
||||
if field == "config" {
|
||||
let (n, _) = line_ending(i)?;
|
||||
value.push('\n');
|
||||
i = n;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
Ok((i, (field, value)))
|
||||
}
|
||||
|
||||
pub fn parse_zpool_status_config_tree(i: &str) -> Result<Vec<ZFSPoolVDevState>, Error> {
|
||||
match all_consuming(parse_zpool_status_tree)(&i) {
|
||||
Err(nom::Err::Error(err)) |
|
||||
Err(nom::Err::Failure(err)) => {
|
||||
bail!("unable to parse zfs status config tree - {}", nom::error::convert_error(&i, err));
|
||||
}
|
||||
Err(err) => {
|
||||
bail!("unable to parse zfs status config tree: {}", err);
|
||||
}
|
||||
Ok((_, data)) => Ok(data),
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_zpool_status(i: &str) -> Result<Vec<(String, String)>, Error> {
|
||||
match all_consuming(many0(parse_zpool_status_field))(i) {
|
||||
Err(nom::Err::Error(err)) |
|
||||
Err(nom::Err::Failure(err)) => {
|
||||
bail!("unable to parse zfs status output - {}", nom::error::convert_error(i, err));
|
||||
}
|
||||
Err(err) => {
|
||||
bail!("unable to parse zfs status output - {}", err);
|
||||
}
|
||||
Ok((_, data)) => Ok(data),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn vdev_list_to_tree(vdev_list: &[ZFSPoolVDevState]) -> Value {
|
||||
|
||||
#[derive(Debug)]
|
||||
struct TreeNode<'a> {
|
||||
vdev: &'a ZFSPoolVDevState,
|
||||
children: Vec<usize>
|
||||
}
|
||||
|
||||
fn node_to_json(node_idx: usize, nodes: &[TreeNode]) -> Value {
|
||||
let node = &nodes[node_idx];
|
||||
let mut v = serde_json::to_value(node.vdev).unwrap();
|
||||
if node.children.is_empty() {
|
||||
v["leaf"] = true.into();
|
||||
} else {
|
||||
v["leaf"] = false.into();
|
||||
v["children"] = json!([]);
|
||||
for child in node.children .iter(){
|
||||
let c = node_to_json(*child, nodes);
|
||||
v["children"].as_array_mut().unwrap().push(c);
|
||||
}
|
||||
}
|
||||
v
|
||||
}
|
||||
|
||||
let mut nodes: Vec<TreeNode> = vdev_list.into_iter().map(|vdev| {
|
||||
TreeNode {
|
||||
vdev: vdev,
|
||||
children: Vec::new(),
|
||||
}
|
||||
}).collect();
|
||||
|
||||
let mut stack: Vec<usize> = Vec::new();
|
||||
|
||||
let mut root_children: Vec<usize> = Vec::new();
|
||||
|
||||
for idx in 0..nodes.len() {
|
||||
|
||||
if stack.is_empty() {
|
||||
root_children.push(idx);
|
||||
stack.push(idx);
|
||||
continue;
|
||||
}
|
||||
|
||||
let node_lvl = nodes[idx].vdev.lvl;
|
||||
|
||||
let stacked_node = &mut nodes[*(stack.last().unwrap())];
|
||||
let last_lvl = stacked_node.vdev.lvl;
|
||||
|
||||
if node_lvl > last_lvl {
|
||||
stacked_node.children.push(idx);
|
||||
} else if node_lvl == last_lvl {
|
||||
stack.pop();
|
||||
match stack.last() {
|
||||
Some(parent) => nodes[*parent].children.push(idx),
|
||||
None => root_children.push(idx),
|
||||
}
|
||||
} else {
|
||||
loop {
|
||||
if stack.is_empty() {
|
||||
root_children.push(idx);
|
||||
break;
|
||||
}
|
||||
|
||||
let stacked_node = &mut nodes[*(stack.last().unwrap())];
|
||||
if node_lvl <= stacked_node.vdev.lvl {
|
||||
stack.pop();
|
||||
} else {
|
||||
stacked_node.children.push(idx);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
stack.push(idx);
|
||||
}
|
||||
|
||||
let mut result = json!({
|
||||
"name": "root",
|
||||
"children": json!([]),
|
||||
});
|
||||
|
||||
for child in root_children {
|
||||
let c = node_to_json(child, &nodes);
|
||||
result["children"].as_array_mut().unwrap().push(c);
|
||||
}
|
||||
|
||||
result
|
||||
}
|
||||
|
||||
pub fn zpool_status(pool: &str) -> Result<Vec<(String, String)>, Error> {
|
||||
|
||||
let mut command = std::process::Command::new("zpool");
|
||||
command.args(&["status", "-p", "-P", pool]);
|
||||
|
||||
let output = crate::tools::run_command(command, None)?;
|
||||
|
||||
parse_zpool_status(&output)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_zpool_status_parser() -> Result<(), Error> {
|
||||
|
||||
let output = r###" pool: tank
|
||||
state: DEGRADED
|
||||
status: One or more devices could not be opened. Sufficient replicas exist for
|
||||
the pool to continue functioning in a degraded state.
|
||||
action: Attach the missing device and online it using 'zpool online'.
|
||||
see: http://www.sun.com/msg/ZFS-8000-2Q
|
||||
scrub: none requested
|
||||
config:
|
||||
|
||||
NAME STATE READ WRITE CKSUM
|
||||
tank DEGRADED 0 0 0
|
||||
mirror-0 DEGRADED 0 0 0
|
||||
c1t0d0 ONLINE 0 0 0
|
||||
c1t2d0 ONLINE 0 0 0
|
||||
c1t1d0 UNAVAIL 0 0 0 cannot open
|
||||
mirror-1 DEGRADED 0 0 0
|
||||
tank1 DEGRADED 0 0 0
|
||||
tank2 DEGRADED 0 0 0
|
||||
|
||||
errors: No known data errors
|
||||
"###;
|
||||
|
||||
let key_value_list = parse_zpool_status(&output)?;
|
||||
for (k, v) in key_value_list {
|
||||
println!("{} => {}", k,v);
|
||||
if k == "config" {
|
||||
let vdev_list = parse_zpool_status_config_tree(&v)?;
|
||||
let tree = vdev_list_to_tree(&vdev_list);
|
||||
println!("TREE1 {}", serde_json::to_string_pretty(&tree)?);
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
Loading…
Reference in New Issue