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

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3.2 KiB
Rust
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use anyhow::Result;
use std::path::PathBuf;
use thinp::file_utils;
use thinp::io_engine::*;
use crate::args;
use crate::common::fixture::*;
use crate::common::process::*;
use crate::common::target::*;
use crate::common::test_dir::TestDir;
use crate::common::thin_xml_generator::{write_xml, SingleThinS};
//-----------------------------------------------
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);
run_ok(THIN_RESTORE, args!["-i", &xml, "-o", &md])?;
Ok(md)
}
//-----------------------------------------------
// FIXME: replace mk_valid_md with this?
pub fn prep_metadata(td: &mut TestDir) -> Result<PathBuf> {
let md = mk_zeroed_md(td)?;
let args = args!["-o", &md, "--format", "--nr-data-blocks", "102400"];
run_ok(THIN_GENERATE_METADATA, args)?;
// Create a 2GB device
let args = args!["-o", &md, "--create-thin", "1"];
run_ok(THIN_GENERATE_METADATA, args)?;
let args = args![
"-o",
&md,
"--dev-id",
"1",
"--size",
"2097152",
"--rw=randwrite",
"--seq-nr=16"
];
run_ok(THIN_GENERATE_MAPPINGS, args)?;
// Take a few snapshots.
let mut snap_id = 2;
for _i in 0..10 {
// take a snapshot
let snap_id_str = snap_id.to_string();
let args = args!["-o", &md, "--create-snap", &snap_id_str, "--origin", "1"];
run_ok(THIN_GENERATE_METADATA, args)?;
// partially overwrite the origin (64MB)
let args = args![
"-o",
&md,
"--dev-id",
"1",
"--size",
"2097152",
"--io-size",
"131072",
"--rw=randwrite",
"--seq-nr=16"
];
run_ok(THIN_GENERATE_MAPPINGS, args)?;
snap_id += 1;
}
Ok(md)
}
pub fn set_needs_check(md: &PathBuf) -> Result<()> {
let args = args!["-o", &md, "--set-needs-check"];
run_ok(THIN_GENERATE_METADATA, args)?;
Ok(())
}
pub fn generate_metadata_leaks(
md: &PathBuf,
nr_blocks: u64,
expected: u32,
actual: u32,
) -> Result<()> {
let nr_blocks_str = nr_blocks.to_string();
let expected_str = expected.to_string();
let actual_str = actual.to_string();
let args = args![
"-o",
&md,
"--create-metadata-leaks",
"--nr-blocks",
&nr_blocks_str,
"--expected",
&expected_str,
"--actual",
&actual_str
];
run_ok(THIN_GENERATE_DAMAGE, args)?;
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)
}
//-----------------------------------------------