Message ID | 7472e04cec179abc351e1ca86cd257c848ef1175.1629780501.git.anand.jain@oracle.com (mailing list archive) |
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Tue, 24 Aug 2021 05:05:43 +0000 From: Anand Jain <anand.jain@oracle.com> To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.com, l@damenly.su Subject: [PATCH V5 3/4] btrfs: update latest_dev when we sprout Date: Tue, 24 Aug 2021 13:05:21 +0800 Message-Id: <7472e04cec179abc351e1ca86cd257c848ef1175.1629780501.git.anand.jain@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <cover.1629780501.git.anand.jain@oracle.com> References: <cover.1629780501.git.anand.jain@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SG2PR03CA0127.apcprd03.prod.outlook.com (2603:1096:4:91::31) To MN2PR10MB4128.namprd10.prod.outlook.com (2603:10b6:208:1d2::24) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (39.109.186.25) by SG2PR03CA0127.apcprd03.prod.outlook.com (2603:1096:4:91::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4457.6 via Frontend Transport; Tue, 24 Aug 2021 05:05:42 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4cf62e0a-c6de-4f46-4ae1-08d966bcd373 X-MS-TrafficTypeDiagnostic: BL0PR10MB3428: X-Microsoft-Antispam-PRVS: <BL0PR10MB3428D6C67961AF3520257DA2E5C59@BL0PR10MB3428.namprd10.prod.outlook.com> X-MS-Oob-TLC-OOBClassifiers: OLM:2043; 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Series | btrf_show_devname related fixes | expand |
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index ae317b0c39a3..8470c5b5f35e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2600,6 +2600,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path btrfs_abort_transaction(trans, ret); goto error_trans; } + btrfs_assign_next_active_device(fs_info->fs_devices->latest_dev, + device); } device->fs_devices = fs_devices;
When we add a device to the seed filesystem (sprouting) it is a new filesystem (and fsid) on the device added. Update the latest_device so that /proc/self/mounts shows the correct device. For example: $ btrfstune -S1 /dev/vg/scratch1 $ mount /dev/vg/scratch1 /btrfs mount: /btrfs: WARNING: device write-protected, mounted read-only. $ cat /proc/self/mounts | grep btrfs /dev/mapper/vg-scratch1 /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0 $ btrfs dev add -f /dev/vg/scratch0 /btrfs Before: $ cat /proc/self/mounts | grep btrfs /dev/mapper/vg-scratch1 /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0 After: $ cat /proc/self/mounts | grep btrfs /dev/mapper/vg-scratch0 /btrfs btrfs ro,relatime,space_cache,subvolid=5,subvol=/ 0 0 Signed-off-by: Anand Jain <anand.jain@oracle.com> --- fs/btrfs/volumes.c | 2 ++ 1 file changed, 2 insertions(+)