From: Markus Frank <m.frank@proxmox.com>
To: pbs-devel@lists.proxmox.com
Subject: [pbs-devel] [PATCH proxmox-backup 2/6] feature #3690: add wipe_blockdev & change_parttype rust equivalent
Date: Fri, 10 Nov 2023 14:50:06 +0100 [thread overview]
Message-ID: <20231110135010.106015-2-m.frank@proxmox.com> (raw)
In-Reply-To: <20231110135010.106015-1-m.frank@proxmox.com>
The wipe_blockdev & change_parttype functions are similar to
PVE::Diskmanage's wipe_blockdev & change_parttype functions.
The partition_by_name & complete_partition_name functions are
modified disk_by_name & complete_disk_name functions for partitions.
Signed-off-by: Markus Frank <m.frank@proxmox.com>
---
src/tools/disks/mod.rs | 90 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 89 insertions(+), 1 deletion(-)
diff --git a/src/tools/disks/mod.rs b/src/tools/disks/mod.rs
index 72e374ca..75d84696 100644
--- a/src/tools/disks/mod.rs
+++ b/src/tools/disks/mod.rs
@@ -19,7 +19,7 @@ use proxmox_lang::{io_bail, io_format_err};
use proxmox_schema::api;
use proxmox_sys::linux::procfs::{mountinfo::Device, MountInfo};
-use pbs_api_types::BLOCKDEVICE_NAME_REGEX;
+use pbs_api_types::{BLOCKDEVICE_NAME_REGEX, BLOCKDEVICE_PARTITION_NAME_REGEX};
mod zfs;
pub use zfs::*;
@@ -111,6 +111,12 @@ impl DiskManage {
self.disk_by_sys_path(syspath)
}
+ /// Get a `Disk` for a name in `/sys/class/block/<name>`.
+ pub fn partition_by_name(self: Arc<Self>, name: &str) -> io::Result<Disk> {
+ let syspath = format!("/sys/class/block/{}", name);
+ self.disk_by_sys_path(syspath)
+ }
+
/// Gather information about mounted disks:
fn mounted_devices(&self) -> Result<&HashSet<dev_t>, Error> {
self.mounted_devices
@@ -1056,6 +1062,72 @@ pub fn inititialize_gpt_disk(disk: &Disk, uuid: Option<&str>) -> Result<(), Erro
Ok(())
}
+/// Wipes all labels and the first 200 MiB of a disk/partition (or the whole if it is smaller).
+/// If called with a partition, also sets the partition type to 0x83 'Linux filesystem'.
+pub fn wipe_blockdev(disk: &Disk) -> Result<(), Error> {
+ let disk_path = disk.device_path().unwrap();
+
+ let mut is_partition = false;
+ for disk_i in get_lsblk_info()?.iter() {
+ if disk_i.path == disk_path.to_str().unwrap() && disk_i.partition_type.is_some() {
+ is_partition = true;
+ }
+ }
+
+ let mut to_wipe: Vec<PathBuf> = Vec::new();
+
+ let partitions_map = disk.partitions()?;
+ for (_, part_disk) in partitions_map.iter() {
+ let part_path = part_disk.device_path().unwrap();
+ to_wipe.push(part_path.to_path_buf());
+ }
+
+ to_wipe.push(disk_path.to_path_buf());
+
+ println!("Wiping block device {}", disk_path.display());
+
+ let mut wipefs_command = std::process::Command::new("wipefs");
+ wipefs_command.arg("--all").args(&to_wipe);
+
+ proxmox_sys::command::run_command(wipefs_command, None)?;
+
+ let size = disk.size().map(|size| size / 1024 / 1024)?;
+ let count = size.min(200);
+
+ let mut dd_command = std::process::Command::new("dd");
+ let args = [
+ "if=/dev/zero",
+ &format!("of={}", disk_path.display()),
+ "bs=1M",
+ "conv=fdatasync",
+ &format!("count={}", count),
+ ];
+ dd_command.args(args);
+
+ proxmox_sys::command::run_command(dd_command, None)?;
+
+ if is_partition {
+ change_parttype(&disk, "8300")?;
+ }
+
+ Ok(())
+}
+
+pub fn change_parttype(part_disk: &Disk, part_type: &str) -> Result<(), Error> {
+ let part_path = part_disk.device_path().unwrap();
+ if let Ok(stat) = nix::sys::stat::stat(part_path) {
+ let mut sgdisk_command = std::process::Command::new("sgdisk");
+ let major = unsafe { libc::major(stat.st_rdev) };
+ let minor = unsafe { libc::minor(stat.st_rdev) };
+ let partnum_path = &format!("/sys/dev/block/{}:{}/partition", major, minor);
+ let partnum: u32 = std::fs::read_to_string(partnum_path)?.trim_end().parse()?;
+ sgdisk_command.arg(&format!("-t{}:{}", partnum, part_type));
+ sgdisk_command.arg(&part_disk.parent().unwrap().device_path().unwrap());
+ proxmox_sys::command::run_command(sgdisk_command, None)?;
+ }
+ Ok(())
+}
+
/// Create a single linux partition using the whole available space
pub fn create_single_linux_partition(disk: &Disk) -> Result<Disk, Error> {
let disk_path = match disk.device_path() {
@@ -1136,6 +1208,22 @@ pub fn complete_disk_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<S
.collect()
}
+/// Block device partition name completion helper
+pub fn complete_partition_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
+ let dir = match proxmox_sys::fs::scan_subdir(
+ libc::AT_FDCWD,
+ "/sys/class/block",
+ &BLOCKDEVICE_PARTITION_NAME_REGEX,
+ ) {
+ Ok(dir) => dir,
+ Err(_) => return vec![],
+ };
+
+ dir.flatten()
+ .map(|item| item.file_name().to_str().unwrap().to_string())
+ .collect()
+}
+
/// Read the FS UUID (parse blkid output)
///
/// Note: Calling blkid is more reliable than using the udev ID_FS_UUID property.
--
2.39.2
next prev parent reply other threads:[~2023-11-10 13:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-10 13:50 [pbs-devel] [PATCH proxmox-backup 1/6] feature #3690: add regex, format & schema for partition names to pbs-api-types Markus Frank
2023-11-10 13:50 ` Markus Frank [this message]
2023-11-27 16:29 ` [pbs-devel] [PATCH proxmox-backup 2/6] feature #3690: add wipe_blockdev & change_parttype rust equivalent Lukas Wagner
2023-11-10 13:50 ` [pbs-devel] [PATCH proxmox-backup 3/6] feature #3690: api: add function wipe_disk Markus Frank
2023-11-10 13:50 ` [pbs-devel] [PATCH proxmox-backup 4/6] feature #3690: cli: " Markus Frank
2023-11-10 13:50 ` [pbs-devel] [PATCH proxmox-backup 5/6] feature #3690: ui: enable wipe disk in StorageAndDisks Markus Frank
2023-11-27 16:29 ` Lukas Wagner
2023-11-10 13:50 ` [pbs-devel] [PATCH proxmox-backup 6/6] prohibit disk wipe of EFI partition Markus Frank
2023-11-27 16:29 ` Lukas Wagner
2023-11-27 16:29 ` [pbs-devel] [PATCH proxmox-backup 1/6] feature #3690: add regex, format & schema for partition names to pbs-api-types Lukas Wagner
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