From: Markus Frank <m.frank@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH docs v1 2/5] virtiofs: add explanation for cache=metadata behavior
Date: Mon, 5 May 2025 17:05:30 +0200 [thread overview]
Message-ID: <20250505150533.290694-3-m.frank@proxmox.com> (raw)
In-Reply-To: <20250505150533.290694-1-m.frank@proxmox.com>
Adds a description of the `cache=metadata` mode and references the
upstream patch that introduced it.
Signed-off-by: Markus Frank <m.frank@proxmox.com>
---
qm.adoc | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/qm.adoc b/qm.adoc
index 8b9e096..74f8304 100644
--- a/qm.adoc
+++ b/qm.adoc
@@ -1315,7 +1315,9 @@ has been configured in the resource mapping. Additionally, you can set the
`cache` option to either `always`, `never`, `metadata`, or `auto` (default:
`auto`), depending on your requirements. How the different caching modes behave
can be read https://lwn.net/Articles/774495/[here under the "Caching Modes"
-section].
+section]. The https://gitlab.com/virtio-fs/virtiofsd/-/commit/598ca8e[`metadata`]
+policy is similar to `never`, but it allows guests to cache filesystem metadata,
+such as dcache and attr.
The `virtiofsd` supports ACL and xattr passthrough (can be enabled with the
`expose-acl` and `expose-xattr` options), allowing the guest to access ACLs and
--
2.39.5
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next prev parent reply other threads:[~2025-05-05 15:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-05 15:05 [pve-devel] [PATCH qemu-server/docs/manager v1 0/5] virtiofs: add thread-pool-size and improve docs Markus Frank
2025-05-05 15:05 ` [pve-devel] [PATCH qemu-server v1 1/5] fix #6370: virtiofs: add support for thread-pool-size option Markus Frank
2025-05-05 15:05 ` Markus Frank [this message]
2025-05-05 15:05 ` [pve-devel] [PATCH docs v1 3/5] virtiofs: add table for optional parameters Markus Frank
2025-05-05 15:05 ` [pve-devel] [PATCH docs v1 4/5] virtiofs: add thread-pool-size description Markus Frank
2025-05-05 15:05 ` [pve-devel] [PATCH manager v1 5/5] fix #6370: ui: virtiofs edit: add support for thread-pool-size option Markus Frank
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