From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jack Wang Subject: Re: LVM RAID: task mdX_raid1:221 blocked for more than 120 seconds Date: Mon, 26 Nov 2018 08:25:21 +0100 Message-ID: References: <90473b46-274c-55af-3887-f058f2cf05dd@gmail.com> Reply-To: LVM general discussion and development Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <90473b46-274c-55af-3887-f058f2cf05dd@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-lvm-bounces@redhat.com Errors-To: linux-lvm-bounces@redhat.com To: LVM general discussion and development , linux-raid List-Id: linux-raid.ids K2NjIGxpbnV4LXJhaWQKClRoZSBjYWxsIHRyYWNlIGxvb2tzIGtpbmRzIG9mIGRlYWRsb2NrIGlu IHJhaWQKQ2VzYXJlIExlb25hcmRpIDxjZWxlb25hckBnbWFpbC5jb20+IOS6jjIwMTjlubQxMeac iDI15pel5ZGo5pelIOS4iuWNiDEyOjMx5YaZ6YGT77yaCj4KPiBTaW5jZSBteSBtZXNzYWdlIGRp ZCBub3QgcmVhY2ggdGhlIGxpc3QsIEknbSByZXNlbmRpbmcsIGJ1dCBmaXJzdCBJJ3ZlCj4gc3Vi c2NyaWJlZCBteXNlbGYuCj4KPiAtLS0tLS0tLS0tLS0tLS0tLS0KPiBIZWxsbywgSSdtIHdyaXRp bmcgaGVyZSB0byBoYXZlIHlvdXIgb3BpbmlvbiBhbmQgcG9zc2libHkgc29tZSBhZHZpY2UKPiBh Ym91dCBzb21lIERlYmlhbiBidWdzIHJlbGF0ZWQgdG8gTFZNIFJBSUQgdGhhdCBhcmUgc3RpbGwg dW5yZXNvbHZlZDoKPiBodHRwczovL2J1Z3MuZGViaWFuLm9yZy9jZ2ktYmluL2J1Z3JlcG9ydC5j Z2k/YnVnPTkxMzExOQo+IGh0dHBzOi8vYnVncy5kZWJpYW4ub3JnL2NnaS1iaW4vYnVncmVwb3J0 LmNnaT9idWc9OTEzMTM4Cj4gaHR0cHM6Ly9idWdzLmRlYmlhbi5vcmcvY2dpLWJpbi9idWdyZXBv cnQuY2dpP2J1Zz05MDQ4MjIKPgo+IEJ1ZyAjOTEzMTE5IHdhcyBmaWxlZCBieSBtZSwgc28gSSBj YW4gcGVyc29uYWxseSBwcm92aWRlIHNvbWUgbW9yZQo+IGluZm9ybWF0aW9uIGFuZCBkbyB0ZXN0 cy4KPgo+IFByZW1pc2VzIHJlbGF0ZWQgZGkgRGViaWFuIHVuc3RhYmxlOgo+ICogRGViaWFuJ3Mg a2VybmVsIGlzIGN1cnJlbnRseSA0LjE4LjIwLgo+ICogRnJvbSBrZXJuZWwgNC4xN35yYzcgRGVi aWFuIGVuYWJsZWQgU0NTSV9NUV9ERUZBVUxUIGFuZCBETV9NUV9ERUZBVUxULgo+ICogRGViaWFu J3MgTFZNIHVzZXJsYW5kIGlzIDIuMDIuMTc2Cj4KPiBUaGUgYWJvdmUgcmVwb3J0cyBzaG93cyBi bG9ja2VkIEkvTyB3aXRoIGRpZmZlcmVudCB0eXBlIG9mIExWTSBSQUlEIGFuZAo+IHdpdGggIzkx MzExOSBJJ3ZlIHN1Y2Nlc2Z1bGx5IHdvcmthcm91bmRlZCBwYXNzaW5nIHRoZSBmb2xsb3dpbmcg a2VybmVsCj4gcGFyYW1ldGVyczoKPiBzY3NpX21vZC51c2VfYmxrX21xPTAgZG1fbW9kLnVzZV9i bGtfbXE9MAo+Cj4gSSd2ZSByZWFkIHRoYXQgUkhFTCB3aWxsIGRlZmF1bHQgdG8gZW5hYmxpbmcg U0NTSV9NUV9ERUZBVUxUIGFuZAo+IERNX01RX0RFRkFVTFQgYW5kIHdpbGwgdXNlIGtlcm5lbCA0 LjE4LiBNYXliZSB5b3UgaGF2ZSBhbHJlYWR5Cj4gZW5jb3VudGVyZWQgdGhpcyBidWcgYW5kIGl0 J3MgYWxyZWFkeSByZXNvbHZlZC4gT3IgdGhlcmUgYXJlIHBhdGNoZXMKPiBwZW5kaW5nLgo+Cj4g V2hhdCBkbyB5b3UgdGhpbms/IFNob3VsZCBJIGZpbGUgYSBidWcgaW4gUmVkIEhhdCBidWcgdHJh Y2tlcj8KPgo+IENlc2FyZS4KPgo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCj4gbGludXgtbHZtIG1haWxpbmcgbGlzdAo+IGxpbnV4LWx2bUByZWRoYXQu Y29tCj4gaHR0cHM6Ly93d3cucmVkaGF0LmNvbS9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWx2bQo+ IHJlYWQgdGhlIExWTSBIT1ctVE8gYXQgaHR0cDovL3RsZHAub3JnL0hPV1RPL0xWTS1IT1dUTy8K Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWx2 bSBtYWlsaW5nIGxpc3QKbGludXgtbHZtQHJlZGhhdC5jb20KaHR0cHM6Ly93d3cucmVkaGF0LmNv bS9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWx2bQpyZWFkIHRoZSBMVk0gSE9XLVRPIGF0IGh0dHA6 Ly90bGRwLm9yZy9IT1dUTy9MVk0tSE9XVE8v From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx19.extmail.prod.ext.phx2.redhat.com [10.5.110.48]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E1C6860141 for ; Mon, 26 Nov 2018 07:25:37 +0000 (UTC) Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 72A76307D931 for ; Mon, 26 Nov 2018 07:25:36 +0000 (UTC) Received: by mail-lf1-f47.google.com with SMTP id p17so12724199lfh.4 for ; Sun, 25 Nov 2018 23:25:36 -0800 (PST) MIME-Version: 1.0 References: <90473b46-274c-55af-3887-f058f2cf05dd@gmail.com> In-Reply-To: <90473b46-274c-55af-3887-f058f2cf05dd@gmail.com> From: Jack Wang Date: Mon, 26 Nov 2018 08:25:21 +0100 Message-ID: Content-Transfer-Encoding: 8bit Subject: Re: [linux-lvm] LVM RAID: task mdX_raid1:221 blocked for more than 120 seconds Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="utf-8" To: LVM general discussion and development , linux-raid +cc linux-raid The call trace looks kinds of deadlock in raid Cesare Leonardi 于2018年11月25日周日 上午12:31写道： > > Since my message did not reach the list, I'm resending, but first I've > subscribed myself. > > ------------------ > Hello, I'm writing here to have your opinion and possibly some advice > about some Debian bugs related to LVM RAID that are still unresolved: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913119 > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913138 > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=904822 > > Bug #913119 was filed by me, so I can personally provide some more > information and do tests. > > Premises related di Debian unstable: > * Debian's kernel is currently 4.18.20. > * From kernel 4.17~rc7 Debian enabled SCSI_MQ_DEFAULT and DM_MQ_DEFAULT. > * Debian's LVM userland is 2.02.176 > > The above reports shows blocked I/O with different type of LVM RAID and > with #913119 I've succesfully workarounded passing the following kernel > parameters: > scsi_mod.use_blk_mq=0 dm_mod.use_blk_mq=0 > > I've read that RHEL will default to enabling SCSI_MQ_DEFAULT and > DM_MQ_DEFAULT and will use kernel 4.18. Maybe you have already > encountered this bug and it's already resolved. Or there are patches > pending. > > What do you think? Should I file a bug in Red Hat bug tracker? > > Cesare. > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/