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Mon, 12 Aug 2024 14:50:16 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088%7]) with mapi id 15.20.7875.015; Mon, 12 Aug 2024 14:50:16 +0000 Message-ID: <4d31268f-310b-4220-88a2-e191c3932a82@oracle.com> Date: Mon, 12 Aug 2024 15:50:13 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [bug report] raid0 array mkfs.xfs hang From: John Garry To: linux-xfs@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-raid@vger.kernel.org References: <8292cfd7-eb9c-4ca7-8eec-321b3738857b@oracle.com> Content-Language: en-US Organization: Oracle Corporation In-Reply-To: <8292cfd7-eb9c-4ca7-8eec-321b3738857b@oracle.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: LNXP123CA0008.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:d2::20) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|CH0PR10MB5195:EE_ X-MS-Office365-Filtering-Correlation-Id: 19ad0807-29ce-42a7-b88d-08dcbade13e2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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For xfsprogs on my modestly recent baseline, mkfs.xfs is getting stuck in prepare_devices() -> libxfs_log_clear() -> libxfs_device_zero() -> libxfs_device_zero() -> platform_zero_range() -> fallocate(start=2198746472448 len=2136997888), and this never returns AFAICS. With v6.10 kernel, that fallocate with same args returns promptly. That code path is just not in xfsprogs 5.3.0 > After upgrading from v6.10 to v6.11-rc1/2, I am seeing a hang when > attempting to format a software raid0 array: > > $sudo mkfs.xfs -f -K  /dev/md127 > meta-data=/dev/md127             isize=512    agcount=32, > agsize=33550272 blks >          =                       sectsz=4096  attr=2, projid32bit=1 >          =                       crc=1        finobt=1, sparse=1, rmapbt=0 >          =                       reflink=1    bigtime=0 inobtcount=0 > data     =                       bsize=4096   blocks=1073608704, imaxpct=5 >          =                       sunit=64     swidth=256 blks > naming   =version 2              bsize=4096   ascii-ci=0, ftype=1 > log      =internal log           bsize=4096   blocks=521728, version=2 >          =                       sectsz=4096  sunit=1 blks, lazy-count=1 > realtime =none                   extsz=4096   blocks=0, rtextents=0 > ^C^C^C^C > > > I'm using mkfs.xfs -K to avoid discard-related lock-up issues which I > have seen reported when googling - maybe this is just another similar > issue. > > The kernel lockup callstack is at the bottom. > > Some array details: > $sudo mdadm --detail /dev/md127 > /dev/md127: >            Version : 1.2 >      Creation Time : Thu Aug  8 13:23:59 2024 >         Raid Level : raid0 >         Array Size : 4294438912 (4.00 TiB 4.40 TB) >       Raid Devices : 4 >      Total Devices : 4 >        Persistence : Superblock is persistent > >        Update Time : Thu Aug  8 13:23:59 2024 >              State : clean >     Active Devices : 4 >    Working Devices : 4 >     Failed Devices : 0 >      Spare Devices : 0 > >             Layout : -unknown- >         Chunk Size : 256K > > Consistency Policy : none > >               Name : 0 >               UUID : 3490e53f:36d0131b:7c7eb913:0fd62deb >             Events : 0 > >     Number   Major   Minor   RaidDevice State >        0       8       16        0      active sync   /dev/sdb >        1       8       64        1      active sync   /dev/sde >        2       8       48        2      active sync   /dev/sdd >        3       8       80        3      active sync   /dev/sdf > > > > $lsblk > NAME               MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT > sda                  8:0    0 46.6G  0 disk > ├─sda1               8:1    0  100M  0 part  /boot/efi > ├─sda2               8:2    0    1G  0 part  /boot > └─sda3               8:3    0 45.5G  0 part >   ├─ocivolume-root 252:0    0 35.5G  0 lvm   / >   └─ocivolume-oled 252:1    0   10G  0 lvm   /var/oled > sdb                  8:16   0    1T  0 disk > └─md127              9:127  0    4T  0 raid0 > sdc                  8:32   0    1T  0 disk > sdd                  8:48   0    1T  0 disk > └─md127              9:127  0    4T  0 raid0 > sde                  8:64   0    1T  0 disk > └─md127              9:127  0    4T  0 raid0 > sdf                  8:80   0    1T  0 disk > └─md127              9:127  0    4T  0 raid0 > > I'll start to look deeper, but any suggestions on the problem are welcome. > > Thanks, > John > > > ort_iscsi aesni_intel crypto_simd cryptd > [  396.110305] CPU: 0 UID: 0 PID: 321 Comm: kworker/0:1H Not tainted > 6.11.0-rc1-g8400291e289e #11 > [  396.111020] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS 1.5.1 06/16/2021 > [  396.111695] Workqueue: kblockd blk_mq_run_work_fn > [  396.112114] RIP: 0010:bio_endio+0xa0/0x1b0 > [  396.112455] Code: 96 9a 02 00 48 8b 43 08 48 85 c0 74 09 0f b7 53 14 > f6 c2 80 75 3b 48 8b 43 38 48 3d e0 a3 3c b2 75 44 0f b6 43 19 48 8b 6b > 40 <84> c0 74 09 80 7d 19 00 75 03 88 45 19 48 89 df 48 89 eb e8 58 fe > [  396.113962] RSP: 0018:ffffa3fec19fbc38 EFLAGS: 00000246 > [  396.114392] RAX: 0000000000000001 RBX: ffff97a284c3e600 RCX: > 00000000002a0001 > [  396.114974] RDX: 0000000000000000 RSI: ffffcfb0f1130f80 RDI: > 0000000000020000 > [  396.115546] RBP: ffff97a284c41bc0 R08: ffff97a284c3e3c0 R09: > 00000000002a0001 > [  396.116185] R10: 0000000000000000 R11: 0000000000000000 R12: > ffff9798216ed000 > [  396.116766] R13: ffff97975bf071c0 R14: ffff979751be4798 R15: > 0000000000009000 > [  396.117393] FS:  0000000000000000(0000) GS:ffff97b5ff600000(0000) > knlGS:0000000000000000 > [  396.118122] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [  396.118709] CR2: 00007f2477a45f68 CR3: 0000000107998005 CR4: > 0000000000770ef0 > [  396.119398] PKRU: 55555554 > [  396.119627] Call Trace: > [  396.119905]  > [  396.120078]  ? watchdog_timer_fn+0x1e2/0x260 > [  396.120457]  ? __pfx_watchdog_timer_fn+0x10/0x10 > [  396.120900]  ? __hrtimer_run_queues+0x10c/0x270 > [  396.121276]  ? hrtimer_interrupt+0x109/0x250 > [  396.121663]  ? __sysvec_apic_timer_interrupt+0x55/0x120 > [  396.122197]  ? sysvec_apic_timer_interrupt+0x6c/0x90 > [  396.122640]  > [  396.122815]  > [  396.123009]  ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 > [  396.123473]  ? bio_endio+0xa0/0x1b0 > [  396.123794]  ? bio_endio+0xb8/0x1b0 > [  396.124082]  md_end_clone_io+0x42/0xa0 > [  396.124406]  blk_update_request+0x128/0x490 > [  396.124745]  ? srso_alias_return_thunk+0x5/0xfbef5 > [  396.125554]  ? scsi_dec_host_busy+0x14/0x90 > [  396.126290]  blk_mq_end_request+0x22/0x2e0 > [  396.126965]  blk_mq_dispatch_rq_list+0x2b6/0x730 > [  396.127660]  ? srso_alias_return_thunk+0x5/0xfbef5 > [  396.128386]  __blk_mq_sched_dispatch_requests+0x442/0x640 > [  396.129152]  blk_mq_sched_dispatch_requests+0x2a/0x60 > [  396.130005]  blk_mq_run_work_fn+0x67/0x80 > [  396.130697]  process_scheduled_works+0xa6/0x3e0 > [  396.131413]  worker_thread+0x117/0x260 > [  396.132051]  ? __pfx_worker_thread+0x10/0x10 > [  396.132697]  kthread+0xd2/0x100 > [  396.133288]  ? __pfx_kthread+0x10/0x10 > [  396.133977]  ret_from_fork+0x34/0x40 > [  396.134613]  ? __pfx_kthread+0x10/0x10 > [  396.135207]  ret_from_fork_asm+0x1a/0x30 > [  396.135863]  >