From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B6ECC4332F for ; Tue, 19 Apr 2022 16:53:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355404AbiDSQ4Q (ORCPT ); Tue, 19 Apr 2022 12:56:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347390AbiDSQuN (ORCPT ); Tue, 19 Apr 2022 12:50:13 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E9A183AA4D for ; Tue, 19 Apr 2022 09:47:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650386827; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=BWvAKy8LocH47YhakvpIBQwKMnIJQQng3vxQEYIL7zc=; b=VX9Lea2KWKzJbjxUJB+5eNsXFpCLEh2LP7F4CyPIdOU1zFfTPqSS2LoYo0YSoNfkgMna/l wBH6fgiAxG90QkwsxU6bRgklaiCJVMoqE5EQsMdYVfcXV1ETi5SEqAXrjQdn1DBJwuliqu C4SVV9PSezIi3S8OhVzbYj3AfM4UvRw= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-511-EaA8j95MOtSsSpdXOLr65A-1; Tue, 19 Apr 2022 12:47:03 -0400 X-MC-Unique: EaA8j95MOtSsSpdXOLr65A-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 34F563820F64; Tue, 19 Apr 2022 16:47:03 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.13]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7B4A740E80E0; Tue, 19 Apr 2022 16:47:02 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <454834.1650373340@warthog.procyon.org.uk> <508603.1650385022@warthog.procyon.org.uk> To: Max Kellermann Cc: dhowells@redhat.com, linux-cachefs@redhat.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: fscache corruption in Linux 5.17? MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <510135.1650386821.1@warthog.procyon.org.uk> Date: Tue, 19 Apr 2022 17:47:01 +0100 Message-ID: <510136.1650386821@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Max Kellermann wrote: > I don't think any write is misaligned. This was triggered by a > WordPress update, so I think the WordPress updater truncated and > rewrote all files. Random guess: some pages got transferred to the > NFS server, but the local copy in fscache did not get updated. Do the NFS servers change the files that are being served - or is it just WordPress pushing the changes to the NFS servers for the web servers to then export? David