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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9725C43382 for ; Wed, 26 Sep 2018 01:21:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82B7321480 for ; Wed, 26 Sep 2018 01:21:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82B7321480 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727186AbeIZHcD (ORCPT ); Wed, 26 Sep 2018 03:32:03 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:57011 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726472AbeIZHcC (ORCPT ); Wed, 26 Sep 2018 03:32:02 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 6D13469ABA555; Wed, 26 Sep 2018 09:21:42 +0800 (CST) Received: from [127.0.0.1] (10.134.22.195) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.399.0; Wed, 26 Sep 2018 09:21:42 +0800 Subject: Re: [f2fs-dev] [PATCH] f2fs: fix quota info to adjust recovered data To: Jaegeuk Kim CC: Chao Yu , , References: <20180918011904.GB79604@jaegeuk-macbookpro.roam.corp.google.com> <20180918020559.GB83471@jaegeuk-macbookpro.roam.corp.google.com> <20180918164556.GC91945@jaegeuk-macbookpro.roam.corp.google.com> <20180919223819.GA79681@jaegeuk-macbookpro.roam.corp.google.com> <157abebb-80e7-d32d-3102-69ddfc5892f2@huawei.com> <20180920214213.GD35918@jaegeuk-macbookpro.roam.corp.google.com> <0c98ab72-9bc4-093d-707f-9c59a38fc7c7@huawei.com> <20180926002909.GC3829@jaegeuk-macbookpro.roam.corp.google.com> From: Chao Yu Message-ID: Date: Wed, 26 Sep 2018 09:21:41 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180926002909.GC3829@jaegeuk-macbookpro.roam.corp.google.com> Content-Type: text/plain; charset="windows-1252" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.134.22.195] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018/9/26 8:29, Jaegeuk Kim wrote: > On 09/21, Chao Yu wrote: >> On 2018/9/21 5:42, Jaegeuk Kim wrote: >>> On 09/20, Chao Yu wrote: >>>> On 2018/9/20 6:38, Jaegeuk Kim wrote: >>>>> On 09/19, Chao Yu wrote: >>>>>> On 2018/9/19 0:45, Jaegeuk Kim wrote: >>>>>>> On 09/18, Chao Yu wrote: >>>>>>>> On 2018/9/18 10:05, Jaegeuk Kim wrote: >>>>>>>>> On 09/18, Chao Yu wrote: >>>>>>>>>> On 2018/9/18 9:19, Jaegeuk Kim wrote: >>>>>>>>>>> On 09/13, Chao Yu wrote: >>>>>>>>>>>> On 2018/9/13 3:54, Jaegeuk Kim wrote: >>>>>>>>>>>>> On 09/12, Chao Yu wrote: >>>>>>>>>>>>>> On 2018/9/12 9:40, Chao Yu wrote: >>>>>>>>>>>>>>> On 2018/9/12 9:25, Jaegeuk Kim wrote: >>>>>>>>>>>>>>>> On 09/12, Chao Yu wrote: >>>>>>>>>>>>>>>>> On 2018/9/12 8:27, Jaegeuk Kim wrote: >>>>>>>>>>>>>>>>>> On 09/11, Jaegeuk Kim wrote: >>>>>>>>>>>>>>>>>>> On 09/12, Chao Yu wrote: >>>>>>>>>>>>>>>>>>>> On 2018/9/12 4:15, Jaegeuk Kim wrote: >>>>>>>>>>>>>>>>>>>>> fsck.f2fs is able to recover the quota structure, since roll-forward recovery >>>>>>>>>>>>>>>>>>>>> can recover it based on previous user information. >>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> I didn't get it, both fsck and kernel recover quota file based all inodes' >>>>>>>>>>>>>>>>>>>> uid/gid/prjid, if {x}id didn't change, wouldn't those two recovery result be the >>>>>>>>>>>>>>>>>>>> same? >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> I thought that, but had to add this, since I was encountering quota errors right >>>>>>>>>>>>>>>>>>> after getting some files recovered. And, I thought it'd make it more safe to do >>>>>>>>>>>>>>>>>>> fsck after roll-forward recovery. >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> Anyway, let me test again without this patch for a while. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Hmm, I just got a fsck failure right after some files recovered. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> To make sure, do you test with "f2fs: guarantee journalled quota data by >>>>>>>>>>>>>>>>> checkpoint"? if not, I think there is no guarantee that f2fs can recover >>>>>>>>>>>>>>>>> quote info into correct quote file, because, in last checkpoint, quota file >>>>>>>>>>>>>>>>> may was corrupted/inconsistent. Right? >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Oh, I forget to mention that, I add a patch to fsck to let it noticing >>>>>>>>>>>>>>> CP_QUOTA_NEED_FSCK_FLAG flag, and by default, fsck will fix corrupted quote >>>>>>>>>>>>>>> file if the flag is set, but w/o this flag, quota file is still corrupted >>>>>>>>>>>>>>> detected by fsck, I guess there is bug in v8. >>>>>>>>>>>>>> >>>>>>>>>>>>>> In v8, there are two cases we didn't guarantee quota file's consistence: >>>>>>>>>>>>>> 1. flush time in block_operation exceed a threshold. >>>>>>>>>>>>>> 2. dquot subsystem error occurs. >>>>>>>>>>>>>> >>>>>>>>>>>>>> For above case, fsck should repair the quota file by default. >>>>>>>>>>>>> >>>>>>>>>>>>> Okay, I got another failure and it seems CP_QUOTA_NEED_FSCK_FLAG was not set >>>>>>>>>>>>> during the recovery. So, we have something missing in the recovery in terms >>>>>>>>>>>>> of quota updates. >>>>>>>>>>>> >>>>>>>>>>>> Yeah, I checked the code, just found one suspected place: >>>>>>>>>>>> >>>>>>>>>>>> find_fsync_dnodes() >>>>>>>>>>>> - f2fs_recover_inode_page >>>>>>>>>>>> - inc_valid_node_count >>>>>>>>>>>> - dquot_reserve_block dquot info is not initialized now >>>>>>>>>>>> - add_fsync_inode >>>>>>>>>>>> - dquot_initialize >>>>>>>>>>>> >>>>>>>>>>>> I think we should reserve block for inode block after dquot_initialize(), can >>>>>>>>>>>> you confirm this? >>>>>>>>>>> >>>>>>>>>>> Let me test this. >>>>>>>>>>> >>>>>>>>>>> >From b90260bc577fe87570b1ef7b134554a8295b1f6c Mon Sep 17 00:00:00 2001 >>>>>>>>>>> From: Jaegeuk Kim >>>>>>>>>>> Date: Mon, 17 Sep 2018 18:14:41 -0700 >>>>>>>>>>> Subject: [PATCH] f2fs: count inode block for recovered files >>>>>>>>>>> >>>>>>>>>>> If a new file is recovered, we missed to reserve its inode block. >>>>>>>>>> >>>>>>>>>> I remember, in order to keep line with other filesystem, unlike on-disk, we >>>>>>>>>> have to keep backward compatibilty, in memory we don't account block number >>>>>>>>>> for f2fs' inode block, but only account inode number for it, so here like >>>>>>>>>> we did in inc_valid_node_count(), we don't need to do this. >>>>>>>>> >>>>>>>>> Okay, I just hit the error again w/o your patch. Another one coming to my mind >>>>>>>>> is that caused by uid/gid change during recovery. Let me try out your patch. >>>>>>>> >>>>>>>> I guess we should update dquot and inode's uid/gid atomically under >>>>>>>> lock_op() in f2fs_setattr() to prevent corruption on sys quota file. >>>>>>>> >>>>>>>> v9 can pass all xfstest cases and por_fsstress case w/ sys quota file >>>>>>>> enabled, but w/ normal quota file, I got one regression reported by >>>>>>>> generic/232, I fixed in v10, will do some tests and release it later. >>>>>>>> >>>>>>>> Note that, my fsck can fix corrupted quota file automatically once >>>>>>>> CP_QUOTA_NEED_FSCK_FLAG is set. >>>>>>> >>>>>>> I hit failures again with your v9 w/ sysfile quota and modified fsck to detect >>>>>> >>>>>> That's strange, in my environment, before v9, I always encounter corrupted >>>>>> quota sysfile after step 9), after v9, I never hit failure again. >>>>>> >>>>>> 1) enable fault injection >>>>>> 2) run fsstress >>>>>> 3) call shutdowon >>>>>> 4) kill fsstress >>>>>> 5) unmount >>>>>> 6) fsck >>>>>> 7) mount >>>>>> 8) umount >>>>>> 9) fsck >>>>>> 10) go 1). >>>>>> >>>>>>> CP_QUOTA_NEED_FSCK_FLAG to fix the partition. Note that, if I set NEED_FSCK >>>>>>> flag in roll-forward recovery, everything is fine. >>>>>> >>>>>> I do the test based on codes in my git tree, could you check the result >>>>>> again based on my code? in where I just disable nat_bits recovery, not >>>>>> sure, in step 6) fsck can break some thing in image. >>>>>> >>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/log/?h=f2fs-dev >>>>>> >>>>>> Also, I just send the fsck code, could you check that too? >>>>>> >>>>>> And I'd like to know your mount option and mkfs option, could you list for me? >>>>> >>>>> I'm just doing this. >>>>> https://github.com/jaegeuk/xfstests-f2fs/blob/f2fs/run.sh#L220 >>>> >>>> I just sent one patch to fix POR issue which missed to recover uid/gid of >>>> inode. >>>> >>>> [PATCH] f2fs: fix to recover inode's uid/gid during POR >>>> >>>> After applying this patch, I can reproduce sys quota file corruption... let >>>> me figure out the solution. >>> >>> Okay. >> >> Could you try v11, no quota corruption in my test now. > > Chao, > > I missed your fsck patch to recover this. Could you post it as well? Could you check below one? https://lore.kernel.org/patchwork/patch/988210/ Thanks, > > Thanks, > >> >> Thanks, >> >>> >>>> >>>> Thanks, >>>> >>>>> >>>>>> >>>>>> Thanks, >>>>>> >>>>>>> >>>>>>>> >>>>>>>> Thanks, >>>>>>>> >>>>>>>>> >>>>>>>>>> >>>>>>>>>> Can you test v9 first? I didn't encounter quota corruption with your >>>>>>>>>> testcase right now. Will check it in cell phone environment. >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Signed-off-by: Chao Yu >>>>>>>>>>> Signed-off-by: Jaegeuk Kim >>>>>>>>>>> --- >>>>>>>>>>> fs/f2fs/recovery.c | 5 +++++ >>>>>>>>>>> 1 file changed, 5 insertions(+) >>>>>>>>>>> >>>>>>>>>>> diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c >>>>>>>>>>> index 56d34193a74b..bff5cf730e13 100644 >>>>>>>>>>> --- a/fs/f2fs/recovery.c >>>>>>>>>>> +++ b/fs/f2fs/recovery.c >>>>>>>>>>> @@ -84,6 +84,11 @@ static struct fsync_inode_entry *add_fsync_inode(struct f2fs_sb_info *sbi, >>>>>>>>>>> err = dquot_alloc_inode(inode); >>>>>>>>>>> if (err) >>>>>>>>>>> goto err_out; >>>>>>>>>>> + err = dquot_reserve_block(inode, 1); >>>>>>>>>>> + if (err) { >>>>>>>>>>> + dquot_drop(inode); >>>>>>>>>>> + goto err_out; >>>>>>>>>>> + } >>>>>>>>>>> } >>>>>>>>>>> >>>>>>>>>>> entry = f2fs_kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); >>>>>>>>>>> >>>>>>>>> >>>>>>>>> . >>>>>>>>> >>>>>>> >>>>>>> . >>>>>>> >>>>> >>>>> . >>>>> >>> >>> . >>> > > . >