[pbs-devel] [PATCH proxmox-backup v9 08/26] api: removable datastore creation

[Wolfgang Bumiller]

On Wed, Apr 24, 2024 at 03:04:19PM +0200, Wolfgang Bumiller wrote:
> On Tue, Apr 23, 2024 at 10:29:42AM +0200, Hannes Laimer wrote:
> > Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
> > ---
> >  src/api2/config/datastore.rs | 63 +++++++++++++++++++++++++++++++++---
> >  1 file changed, 59 insertions(+), 4 deletions(-)
> > 
> > diff --git a/src/api2/config/datastore.rs b/src/api2/config/datastore.rs
> > index 87425ff5..ac1248b3 100644
> > --- a/src/api2/config/datastore.rs
> > +++ b/src/api2/config/datastore.rs
> > @@ -8,7 +8,7 @@ use serde_json::Value;
> >  use proxmox_router::{http_bail, Permission, Router, RpcEnvironment, RpcEnvironmentType};
> >  use proxmox_schema::{api, param_bail, ApiType};
> >  use proxmox_section_config::SectionConfigData;
> > -use proxmox_sys::{task_warn, WorkerTaskContext};
> > +use proxmox_sys::{task_log, task_warn, WorkerTaskContext};
> >  use proxmox_uuid::Uuid;
> >  
> >  use pbs_api_types::{
> > @@ -20,7 +20,8 @@ use pbs_config::BackupLockGuard;
> >  use pbs_datastore::chunk_store::ChunkStore;
> >  
> >  use crate::api2::admin::{
> > -    prune::list_prune_jobs, sync::list_sync_jobs, verify::list_verification_jobs,
> > +    datastore::do_mount_device, prune::list_prune_jobs, sync::list_sync_jobs,
> > +    verify::list_verification_jobs,
> >  };
> >  use crate::api2::config::prune::{delete_prune_job, do_create_prune_job};
> >  use crate::api2::config::sync::delete_sync_job;
> > @@ -72,13 +73,45 @@ pub(crate) fn do_create_datastore(
> >      datastore: DataStoreConfig,
> >      worker: Option<&dyn WorkerTaskContext>,
> >  ) -> Result<(), Error> {
> > -    let path: PathBuf = datastore.path.clone().into();
> > +    let mut path: PathBuf = datastore.absolute_path().into();
> > +    let backup_user = pbs_config::backup_user()?;
> > +    if let Some(store_mount_point) = datastore.get_mount_point() {
> > +        let default_options = proxmox_sys::fs::CreateOptions::new();
> > +        proxmox_sys::fs::create_path(
> > +            store_mount_point,
> > +            Some(default_options.clone()),
> > +            Some(default_options.clone()),
> > +        )?;
> > +        do_mount_device(datastore.clone(), worker)?;
> > +
> > +        let dir_opts = proxmox_sys::fs::CreateOptions::new()
> > +            .owner(backup_user.uid)
> > +            .group(backup_user.gid);
> > +        proxmox_sys::fs::create_path(
> > +            datastore.absolute_path(),
> > +            Some(default_options),
> > +            Some(dir_opts),
> > +        )?;
> 
> ^ The create_path call can be dropped, since ChunkStore::create already
> does this.

This was probably an artefact of my testing. The call in ChunkStore
create uses root:root for the directory above the `.chunks/` dir, so we
do need this, but maybe we should instead do it inside the
ChunkStore::create method.