From nobody Mon Mar 7 15:06:09 2022 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 84FFA1A0FCB6 for ; Mon, 7 Mar 2022 15:06:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KC1xZ2c1Gz3kkK for ; Mon, 7 Mar 2022 15:06:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3656C2623 for ; Mon, 7 Mar 2022 15:06:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 227F6Aeg053662 for ; Mon, 7 Mar 2022 15:06:10 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 227F6AAj053661 for bugs@FreeBSD.org; Mon, 7 Mar 2022 15:06:10 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 254721] Swap on ZFS can crash server in high memory usage conditions Date: Mon, 07 Mar 2022 15:06:09 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.2-STABLE X-Bugzilla-Keywords: panic X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: crest@rlwinm.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1646665570; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pwBL1FHm20FYIGLNIRoGfYnOSQhuoAm4RVDbjFjIlPo=; b=azmVtrCtCWFaqWOm6Z8fAnC7Yp2SvIyPcwl9LvHdeWL4MJPNIPKXI02iPsIdYVTgrfLjKZ Edtw+SD8b2H1ljOj23Xb4ASg0NYBMlp1leFX+ZLh5HJ/uekra/N+F5wQIIgSQPG/5aiTbt 2WLc0KkWpDdUK417m5bjRtGGdOCdqKr+jMllfJm52OoK6QLYwAIgS61DRejZGV0CqV7k6w MXrxtVnNaH4C98Cf2QydPYElbuj0hQZutFgnQ5MfO3/Uva8JWgHmmH4ay9DgEgoE1Dj6hX KIqJ2MRPKs3KXZxbjSE7W8Iu7r5famJT+AxxOH4lKqhZn+gM5u+4eM0u690msg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1646665570; a=rsa-sha256; cv=none; b=sQHevh1eWVn7//0JAOnme9XFlpHX+C92jWUT8SzfxZx2+kfvfjCkBd4HfsGx0UAu2VtLLz 755VGgGTX0AHyOA5CGemj19TLEfqUQYlFzTrGLMbEGoBqzISuZDx61NtjfIa2XRgBNOlNI iG37P4DvR3jAUZzWqHufeDL6HmXPKeJjrVb1FgRtx3swiWZfWR+LvB+2dORQjFrNvrRZ63 1F0l0qcIJlJSc14bXSxjWgEaY8r/Nx23ynir9Q0rjHcHntoYYc1+KX72BcmX2gB1kGzSpe 3IJYHu2IKh6X+gxzAN8NHUi3vREBIv4PtT1jU9Aob+vaa1EeiwMWat5ibCUcnw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254721 crest@rlwinm.de changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |crest@rlwinm.de --- Comment #4 from crest@rlwinm.de --- The (long and) short of it is: writing to ZFS can require heap allocations making ZVOLs unsuitable as swap devices (swapping to normal files on ZFS mo= unts would be even worse). The only reliable solution is to use something simpler as swap space e.g. a gmirror+geli partition. I know this sucks if you have no space left on your disks. --=20 You are receiving this mail because: You are the assignee for the bug.=