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Wong" , xfs , Theodore Ts'o , Shirley Ma , Amir Goldstein , Eric Sandeen , Dave Chinner , Konrad Wilk Subject: Re: XFS LTS backport cabal Date: Thu, 26 May 2022 21:25:32 +0530 In-reply-to: Message-ID: <878rqos2pd.fsf@debian-BULLSEYE-live-builder-AMD64> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SG2PR02CA0010.apcprd02.prod.outlook.com (2603:1096:3:17::22) To SA2PR10MB4587.namprd10.prod.outlook.com (2603:10b6:806:114::12) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b38b347e-4379-4663-f8e5-08da3f30ff62 X-MS-TrafficTypeDiagnostic: CY4PR10MB1783:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SA2PR10MB4587.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230001)(7916004)(366004)(38100700002)(6512007)(38350700002)(107886003)(316002)(26005)(8676002)(186003)(66556008)(66946007)(66476007)(6916009)(54906003)(6486002)(52116002)(83380400001)(6506007)(33716001)(86362001)(4326008)(3480700007)(8936002)(508600001)(2906002)(53546011)(966005)(5660300002)(9686003);DIR:OUT;SFP:1101; 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Wong wrote: >> Hi everyone, >>=20 >> 3. fstesting -- new patches proposed for stable branches shouldn't >> introduce new regressions, and ideally there would also be a regression >> test that would now pass. As Dave and I have stated in the past, >> fstests is a big umbrella of a test suite, which implies that A/B >> testing is the way to go. I think at least Zorro and I would like to >> improve the tagging in fstests to make it more obvious which tests >> contain enough randomness that they cannot be expected to behave 100% >> reliably. > It would be nice to find an agreement on testing requirements. I have > attached some ideas on configs/number of tests/etc as well as the status > of my work on 5.15 below. > > >> a> I've been following the recent fstests threads, and it seems to me >> that there are really two classes of users -- sustaining people who want >> fstests to run reliably so they can tell if their backports have broken >> anything; and developers, who want the randomness to try to poke into >> dusty corners of the filesystem. Can we make it easier to associate >> random bits of data (reliability rates, etc.) with a given fstests >> configuration? And create a test group^Wtag for the tests that rely on >> RNGs to shake things up? > This would be great! > >>=20 >>=20 >> Thoughts? Flames? >>=20 >> --D > This thread had good timing :) I have been working on setting up=20 > some automated testing. Currently, 5.15.y is our priority so I have=20 > started working on this branch. > > Patches are being selected by simply searching for the =E2=80=9CFixes=E2= =80=9D=20 > tag and applying if the commit-to-be-fixed is in the stable branch,=20 > but AUTOSEL would be nice, so I=E2=80=99ll start playing around with that= .=20 > Amir, it would be nice to sync up the patch selection process. I can=20 > help share the load, especially for 5.15. > > Selecting just the tagged =E2=80=9CFixes=E2=80=9D for 5.15.y for patches = through=20 > 5.17.2, 15 patches were found and applied - if there are no=20 > complaints about the testing setup, I can go ahead and send out this=20 > batch: > > c30a0cbd07ec xfs: use kmem_cache_free() for kmem_cache objects > 5ca5916b6bc9 xfs: punch out data fork delalloc blocks on COW writeback fa= ilure > a1de97fe296c xfs: Fix the free logic of state in xfs_attr_node_hasname > 1090427bf18f xfs: remove xfs_inew_wait > 089558bc7ba7 xfs: remove all COW fork extents when remounting readonly > 7993f1a431bc xfs: only run COW extent recovery when there are no live ext= ents > 09654ed8a18c xfs: check sb_meta_uuid for dabuf buffer recovery > f8d92a66e810 xfs: prevent UAF in xfs_log_item_in_current_chkpt > b97cca3ba909 xfs: only bother with sync_filesystem during readonly remoun= t > eba0549bc7d1 xfs: don't generate selinux audit messages for capability te= sting > e014f37db1a2 xfs: use setattr_copy to set vfs inode attributes > 70447e0ad978 xfs: async CIL flushes need pending pushes to be made stable > c8c568259772 xfs: don't include bnobt blocks when reserving free block po= ol > cd6f79d1fb32 xfs: run callbacks before waking waiters in xlog_state_shutd= own_callbacks > 919edbadebe1 xfs: drop async cache flushes from CIL commits. > In our experience, we found that some of the patches which fix bugs would n= ot have the associated "Fixes" tag. Hence I am currently using the script https://gist.github.com/chandanr/c1e3affdb06eb2e025f955e7a77b2338 to identi= fy such commits along with the commits which have the "Fixes" tag. The following command line obtains the list of commits from v5.18, # list-xfs-fix-commits.sh v5.17 v5.18 --- Actual fixes --- 1: eba0549bc7d10 2: e014f37db1a2d 3: 70447e0ad9781 4: c8c5682597727 5: cd6f79d1fb324 6: 919edbadebe17 7: 9a5280b312e2e ---- Possible fixes; Along with matching regex ---- 1: 871b9316e7a77: bug 2: 41667260bc84d: bug 3: 83a44a4f47ad2: fix 4: a9a4bc8c76d74: rac.+ 5: dbd0f5299302f: rac.+ 6: 941fbdfd6dd0f: rac.+ 7: 01728b44ef1b7: bug 8: b9b1335e64030: fix 9: 82be38bcf8a2e: fix 10: d2d7c0473586d: fix 11: ab9c81ef321f9: assert 12: b5f17bec1213a: rac.+ 13: 41e6362183589: fix 14: 3c4cb76bce438: rac.+ 15: 5652ef31705f2: fail I go through each commit in the "Possible fixes" section and determine if a= ny of those need to be backported. --=20 chandan