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From: Naohiro Aota <naohiro.aota@wdc.com>
To: linux-btrfs@vger.kernel.org, David Sterba <dsterba@suse.com>
Cc: Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
	Nikolay Borisov <nborisov@suse.com>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	Matias Bjorling <Matias.Bjorling@wdc.com>,
	Johannes Thumshirn <jthumshirn@suse.de>,
	Hannes Reinecke <hare@suse.com>,
	linux-fsdevel@vger.kernel.org,
	Naohiro Aota <naohiro.aota@wdc.com>
Subject: [PATCH v3 14/15] btrfs-progs: device-add: support HMZONED device
Date: Tue, 20 Aug 2019 13:52:57 +0900	[thread overview]
Message-ID: <20190820045258.1571640-15-naohiro.aota@wdc.com> (raw)
In-Reply-To: <20190820045258.1571640-1-naohiro.aota@wdc.com>

This patch check if the target file system is flagged as HMZONED. If it is,
the device to be added is flagged PREP_DEVICE_HMZONED.  Also add checks to
prevent mixing non-zoned devices and zoned devices.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 cmds/device.c | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/cmds/device.c b/cmds/device.c
index 24158308a41b..9caa77efd049 100644
--- a/cmds/device.c
+++ b/cmds/device.c
@@ -61,6 +61,9 @@ static int cmd_device_add(const struct cmd_struct *cmd,
 	int discard = 1;
 	int force = 0;
 	int last_dev;
+	int res;
+	int hmzoned;
+	struct btrfs_ioctl_feature_flags feature_flags;
 
 	optind = 0;
 	while (1) {
@@ -96,12 +99,35 @@ static int cmd_device_add(const struct cmd_struct *cmd,
 	if (fdmnt < 0)
 		return 1;
 
+	res = ioctl(fdmnt, BTRFS_IOC_GET_FEATURES, &feature_flags);
+	if (res) {
+		error("error getting feature flags '%s': %m", mntpnt);
+		return 1;
+	}
+	hmzoned = feature_flags.incompat_flags & BTRFS_FEATURE_INCOMPAT_HMZONED;
+
 	for (i = optind; i < last_dev; i++){
 		struct btrfs_ioctl_vol_args ioctl_args;
-		int	devfd, res;
+		int	devfd;
 		u64 dev_block_count = 0;
 		char *path;
 
+		if (hmzoned && zoned_model(argv[i]) == ZONED_NONE) {
+			error(
+		"cannot add non-zoned device to HMZONED file system '%s'",
+			      argv[i]);
+			ret++;
+			continue;
+		}
+
+		if (!hmzoned && zoned_model(argv[i]) == ZONED_HOST_MANAGED) {
+			error(
+	"cannot add host managed zoned device to non-HMZONED file system '%s'",
+			      argv[i]);
+			ret++;
+			continue;
+		}
+
 		res = test_dev_for_mkfs(argv[i], force);
 		if (res) {
 			ret++;
@@ -117,7 +143,8 @@ static int cmd_device_add(const struct cmd_struct *cmd,
 
 		res = btrfs_prepare_device(devfd, argv[i], &dev_block_count, 0,
 				PREP_DEVICE_ZERO_END | PREP_DEVICE_VERBOSE |
-				(discard ? PREP_DEVICE_DISCARD : 0));
+				(discard ? PREP_DEVICE_DISCARD : 0) |
+				(hmzoned ? PREP_DEVICE_HMZONED : 0));
 		close(devfd);
 		if (res) {
 			ret++;
-- 
2.23.0


  parent reply	other threads:[~2019-08-20  4:53 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-20  4:52 [PATCH v3 00/15] btrfs-progs: zoned block device support Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 01/15] btrfs-progs: utils: Introduce queue_param helper function Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 02/15] btrfs-progs: introduce raid parameters variables Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 03/15] btrfs-progs: build: Check zoned block device support Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 04/15] btrfs-progs: add new HMZONED feature flag Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 05/15] btrfs-progs: Introduce zone block device helper functions Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 06/15] btrfs-progs: load and check zone information Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 07/15] btrfs-progs: avoid writing super block to sequential zones Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 08/15] btrfs-progs: support discarding zoned device Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 09/15] btrfs-progs: support zero out on zoned block device Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 10/15] btrfs-progs: align device extent allocation to zone boundary Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 11/15] btrfs-progs: do sequential allocation in HMZONED mode Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 12/15] btrfs-progs: redirty clean extent buffers in seq Naohiro Aota
2019-08-20  4:52 ` [PATCH v3 13/15] btrfs-progs: mkfs: Zoned block device support Naohiro Aota
2019-08-20  4:52 ` Naohiro Aota [this message]
2019-08-20  4:52 ` [PATCH v3 15/15] btrfs-progs: introduce support for device replace HMZONED device Naohiro Aota

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