thin-provisioning-tools/tests/common/mod.rs

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#![allow(dead_code)]
use anyhow::Result;
use duct::{cmd, Expression};
use std::fs::OpenOptions;
use std::io::{Read, Write};
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use std::path::PathBuf;
use std::str::from_utf8;
use thinp::file_utils;
use thinp::io_engine::*;
pub mod cache_xml_generator;
pub mod test_dir;
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pub mod thin_xml_generator;
use crate::common::thin_xml_generator::{write_xml, SingleThinS};
use test_dir::TestDir;
//------------------------------------------
// FIXME: write a macro to generate these commands
#[macro_export]
macro_rules! thin_check {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_check", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_restore {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_restore", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_dump {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_dump", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_rmap {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_rmap", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_repair {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_repair", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_delta {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_delta", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_metadata_pack {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_metadata_pack", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_metadata_unpack {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_metadata_unpack", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! cache_check {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/cache_check", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_generate_metadata {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_generate_metadata", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_generate_mappings {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_generate_mappings", args).stdout_capture().stderr_capture()
}
};
}
#[macro_export]
macro_rules! thin_generate_damage {
( $( $arg: expr ),* ) => {
{
use std::ffi::OsString;
let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
duct::cmd("bin/thin_generate_damage", args).stdout_capture().stderr_capture()
}
};
}
//------------------------------------------
// Returns stderr, a non zero status must be returned
pub fn run_fail(command: Expression) -> Result<String> {
let output = command.stderr_capture().unchecked().run()?;
assert!(!output.status.success());
Ok(from_utf8(&output.stderr[0..]).unwrap().to_string())
}
pub fn mk_valid_xml(td: &mut TestDir) -> Result<PathBuf> {
let xml = td.mk_path("meta.xml");
let mut gen = SingleThinS::new(0, 1024, 2048, 2048);
write_xml(&xml, &mut gen)?;
Ok(xml)
}
pub fn mk_valid_md(td: &mut TestDir) -> Result<PathBuf> {
let xml = td.mk_path("meta.xml");
let md = td.mk_path("meta.bin");
let mut gen = SingleThinS::new(0, 1024, 20480, 20480);
write_xml(&xml, &mut gen)?;
let _file = file_utils::create_sized_file(&md, 4096 * 4096);
thin_restore!("-i", xml, "-o", &md).run()?;
Ok(md)
}
pub fn mk_zeroed_md(td: &mut TestDir) -> Result<PathBuf> {
let md = td.mk_path("meta.bin");
eprintln!("path = {:?}", md);
let _file = file_utils::create_sized_file(&md, 1024 * 1024 * 16);
Ok(md)
}
pub fn accepts_flag(flag: &str) -> Result<()> {
let mut td = TestDir::new()?;
let md = mk_valid_md(&mut td)?;
thin_check!(flag, &md).run()?;
Ok(())
}
pub fn superblock_all_zeroes(path: &PathBuf) -> Result<bool> {
let mut input = OpenOptions::new().read(true).write(false).open(path)?;
let mut buf = vec![0; 4096];
input.read_exact(&mut buf[0..])?;
for b in buf {
if b != 0 {
return Ok(false);
}
}
Ok(true)
}
pub fn damage_superblock(path: &PathBuf) -> Result<()> {
let mut output = OpenOptions::new().read(false).write(true).open(path)?;
let buf = [0u8; 512];
output.write_all(&buf)?;
Ok(())
}
//-----------------------------------------------
// FIXME: replace mk_valid_md with this?
pub fn prep_metadata(td: &mut TestDir) -> Result<PathBuf> {
let md = mk_zeroed_md(td)?;
thin_generate_metadata!("-o", &md, "--format", "--nr-data-blocks", "102400").run()?;
// Create a 2GB device
thin_generate_metadata!("-o", &md, "--create-thin", "1").run()?;
thin_generate_mappings!(
"-o",
&md,
"--dev-id",
"1",
"--size",
format!("{}", 1024 * 1024 * 2),
"--rw=randwrite",
"--seq-nr=16"
)
.run()?;
// Take a few snapshots.
let mut snap_id = 2;
for _i in 0..10 {
// take a snapshot
thin_generate_metadata!(
"-o",
&md,
"--create-snap",
format!("{}", snap_id),
"--origin",
"1"
)
.run()?;
// partially overwrite the origin (64MB)
thin_generate_mappings!(
"-o",
&md,
"--dev-id",
format!("{}", 1),
"--size",
format!("{}", 1024 * 1024 * 2),
"--io-size",
format!("{}", 64 * 1024 * 2),
"--rw=randwrite",
"--seq-nr=16"
)
.run()?;
snap_id += 1;
}
Ok(md)
}
pub fn set_needs_check(md: &PathBuf) -> Result<()> {
thin_generate_metadata!("-o", &md, "--set-needs-check").run()?;
Ok(())
}
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pub fn generate_metadata_leaks(
md: &PathBuf,
nr_blocks: u64,
expected: u32,
actual: u32,
) -> Result<()> {
let output = thin_generate_damage!(
"-o",
&md,
"--create-metadata-leaks",
"--nr-blocks",
format!("{}", nr_blocks),
"--expected",
format!("{}", expected),
"--actual",
format!("{}", actual)
)
.unchecked()
.run()?;
assert!(output.status.success());
Ok(())
}
pub fn get_needs_check(md: &PathBuf) -> Result<bool> {
use thinp::thin::superblock::*;
let engine = SyncIoEngine::new(&md, 1, false)?;
let sb = read_superblock(&engine, SUPERBLOCK_LOCATION)?;
Ok(sb.flags.needs_check)
}
pub fn md5(md: &PathBuf) -> Result<String> {
let output = cmd!("md5sum", "-b", &md).stdout_capture().run()?;
let csum = std::str::from_utf8(&output.stdout[0..])?.to_string();
let csum = csum.split_ascii_whitespace().next().unwrap().to_string();
Ok(csum)
}
// This checksums the file before and after the thunk is run to
// ensure it is unchanged.
pub fn ensure_untouched<F>(p: &PathBuf, thunk: F) -> Result<()>
where
F: Fn() -> Result<()>,
{
let csum = md5(p)?;
thunk()?;
assert_eq!(csum, md5(p)?);
Ok(())
}