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From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Subject: [pbs-devel] [PATCH proxmox-backup v2 05/12] local store cache: serve response fetched from s3 backend
Date: Wed,  8 Oct 2025 17:21:18 +0200	[thread overview]
Message-ID: <20251008152125.849216-6-c.ebner@proxmox.com> (raw)
In-Reply-To: <20251008152125.849216-1-c.ebner@proxmox.com>

If the chunk file was not found in the local datastore cache or the
chunk file was the zero marker, it is fetched from the s3 backend and
re-inserted.

Currently, the chunk is then re-read from the file, but that is not
required. Serve the still in-memory chunk data as result of the cacher
access call.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 pbs-datastore/src/local_datastore_lru_cache.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pbs-datastore/src/local_datastore_lru_cache.rs b/pbs-datastore/src/local_datastore_lru_cache.rs
index fe0b336ff..7d0b3e114 100644
--- a/pbs-datastore/src/local_datastore_lru_cache.rs
+++ b/pbs-datastore/src/local_datastore_lru_cache.rs
@@ -124,7 +124,7 @@ impl LocalDatastoreLruCache {
                                 let bytes = response.content.collect().await?.to_bytes();
                                 let chunk = DataBlob::from_raw(bytes.to_vec())?;
                                 self.store.insert_chunk(&chunk, digest)?;
-                                std::fs::File::open(&path)?
+                                return Ok(Some(chunk));
                             }
                         }
                     } else {
@@ -147,8 +147,7 @@ impl LocalDatastoreLruCache {
                                 let bytes = response.content.collect().await?.to_bytes();
                                 let chunk = DataBlob::from_raw(bytes.to_vec())?;
                                 self.store.insert_chunk(&chunk, digest)?;
-                                let mut file = std::fs::File::open(&path)?;
-                                DataBlob::load_from_reader(&mut file)?
+                                return Ok(Some(chunk));
                             }
                         }
                     } else {
-- 
2.47.3



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  parent reply	other threads:[~2025-10-08 15:22 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-08 15:21 [pbs-devel] [PATCH proxmox-backup v2 00/12] s3 store: fix issues with chunk s3 backend upload and cache eviction Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 01/12] datastore: gc: inline single callsite method Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 02/12] gc: chunk store: rework atime check and gc status into common helper Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 03/12] chunk store: add unsafe signature to cache remove method Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 04/12] local store cache: replace evicted cache chunks instead of truncate Christian Ebner
2025-10-08 15:21 ` Christian Ebner [this message]
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 06/12] local store cache: refactor fetch and insert of chunks for s3 backend Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 07/12] local store cache: rework access cache fetching and insert logic Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 08/12] local store cache: drop obsolete cacher implementation Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 09/12] chunk store: refactor method for chunk insertion Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 10/12] api: chunk upload: fix race between chunk backend upload and insert Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 11/12] api: chunk upload: fix race with garbage collection for no-cache on s3 Christian Ebner
2025-10-08 15:21 ` [pbs-devel] [PATCH proxmox-backup v2 12/12] pull: guard chunk upload and only insert into cache after upload Christian Ebner

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