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From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Subject: [pbs-devel] [PATCH proxmox-backup v6 12/21] chunk store: rename cache-specific helpers
Date: Fri, 14 Nov 2025 14:18:52 +0100	[thread overview]
Message-ID: <20251114131901.441650-13-c.ebner@proxmox.com> (raw)
In-Reply-To: <20251114131901.441650-1-c.ebner@proxmox.com>

From: Fabian Grünbichler <f.gruenbichler@proxmox.com>

to make it more explicit that these operate in cache context, and are not
generic helpers as the original names kind of imply.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 pbs-datastore/src/chunk_store.rs               | 4 ++--
 pbs-datastore/src/local_datastore_lru_cache.rs | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/pbs-datastore/src/chunk_store.rs b/pbs-datastore/src/chunk_store.rs
index a17c258a7..f5a77276d 100644
--- a/pbs-datastore/src/chunk_store.rs
+++ b/pbs-datastore/src/chunk_store.rs
@@ -699,7 +699,7 @@ impl ChunkStore {
     /// for garbage collection. Returns with success also if chunk file is not pre-existing.
     ///
     /// Safety: chunk store mutex must be held!
-    pub(crate) unsafe fn clear_chunk(&self, digest: &[u8; 32]) -> Result<(), Error> {
+    pub(crate) unsafe fn replace_chunk_with_marker(&self, digest: &[u8; 32]) -> Result<(), Error> {
         let (chunk_path, digest_str) = self.chunk_path(digest);
         let mut create_options = CreateOptions::new();
         if nix::unistd::Uid::effective().is_root() {
@@ -717,7 +717,7 @@ impl ChunkStore {
     ///
     /// Callers must hold the per-chunk file lock in order to avoid races with renaming of corrupt
     /// chunks by verifications and chunk inserts by backups.
-    pub(crate) fn remove_chunk(&self, digest: &[u8; 32]) -> Result<(), Error> {
+    pub(crate) fn remove_chunk_marker(&self, digest: &[u8; 32]) -> Result<(), Error> {
         let (chunk_path, _digest_str) = self.chunk_path(digest);
         std::fs::remove_file(chunk_path).map_err(Error::from)
     }
diff --git a/pbs-datastore/src/local_datastore_lru_cache.rs b/pbs-datastore/src/local_datastore_lru_cache.rs
index 8b2dbedfd..ae2215be1 100644
--- a/pbs-datastore/src/local_datastore_lru_cache.rs
+++ b/pbs-datastore/src/local_datastore_lru_cache.rs
@@ -42,7 +42,7 @@ impl LocalDatastoreLruCache {
         }
         self.cache.insert(*digest, (), |digest| {
             // Safety: lock acquired above, this is executed inline!
-            unsafe { self.store.clear_chunk(&digest) }
+            unsafe { self.store.replace_chunk_with_marker(&digest) }
         })
     }
 
@@ -59,7 +59,7 @@ impl LocalDatastoreLruCache {
     /// Fails if the chunk cannot be deleted successfully.
     pub(crate) unsafe fn remove(&self, digest: &[u8; 32]) -> Result<(), Error> {
         self.cache.remove(*digest);
-        self.store.remove_chunk(digest)
+        self.store.remove_chunk_marker(digest)
     }
 
     /// Access the locally cached chunk or fetch it from the S3 object store via the provided
@@ -80,7 +80,7 @@ impl LocalDatastoreLruCache {
                     let _lock = self.store.mutex().lock().unwrap();
                     self.cache.insert(*digest, (), |digest| {
                         // Safety: lock acquired above, this is executed inline
-                        unsafe { self.store.clear_chunk(&digest) }
+                        unsafe { self.store.replace_chunk_with_marker(&digest) }
                     })?;
                     Ok(Some(chunk))
                 }
-- 
2.47.3



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  parent reply	other threads:[~2025-11-14 13:19 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-14 13:18 [pbs-devel] [PATCH proxmox-backup v6 00/21] fix chunk upload/insert, rename corrupt chunks and GC race conditions for s3 backend Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 01/21] datastore: GC: drop overly verbose info message during s3 chunk sweep Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 02/21] chunk store: implement per-chunk file locking helper for s3 backend Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 03/21] datastore: acquire chunk store mutex lock when renaming corrupt chunk Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 04/21] datastore: get per-chunk file lock for chunk rename on s3 backend Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 05/21] fix #6961: datastore: verify: evict corrupt chunks from in-memory LRU cache Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 06/21] datastore: add locking to protect against races on chunk insert for s3 Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 07/21] GC: fix race with chunk upload/insert on s3 backends Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 08/21] chunk store: reduce exposure of clear_chunk() to crate only Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 09/21] chunk store: make chunk removal a helper method of the chunk store Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 10/21] store: split insert_chunk into wrapper + unsafe locked implementation Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 11/21] store: cache: move Mutex acquire to cache insertion Christian Ebner
2025-11-14 13:18 ` Christian Ebner [this message]
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 13/21] GC: cleanup chunk markers from cache in phase 3 on s3 backends Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 14/21] GC: touch bad chunk files independent of backend type Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 15/21] GC: guard missing marker file insertion for s3 backed stores Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 16/21] GC: s3: track if a chunk marker file is missing since a bad chunk Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 17/21] chunk store: add helpers marking missing local chunk markers as expected Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 18/21] GC: assure chunk exists on s3 store when creating missing chunk marker Christian Ebner
2025-11-14 13:18 ` [pbs-devel] [PATCH proxmox-backup v6 19/21] datastore: document s3 backend specific locking restrictions Christian Ebner
2025-11-14 13:19 ` [pbs-devel] [PATCH proxmox-backup v6 20/21] GC: fix: don't drop bad extension for S3 object to chunk path helper Christian Ebner
2025-11-14 13:19 ` [pbs-devel] [PATCH proxmox-backup v6 21/21] GC: clean up bad chunks from the filesystem only Christian Ebner
2025-11-14 13:34 ` [pbs-devel] [PATCH proxmox-backup v6 00/21] fix chunk upload/insert, rename corrupt chunks and GC race conditions for s3 backend Fabian Grünbichler
2025-11-14 22:14 ` Thomas Lamprecht

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