From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:50853 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751105AbcC2O1h (ORCPT ); Tue, 29 Mar 2016 10:27:37 -0400 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: clm@fb.com, dsterba@suse.cz Subject: [PATCH 1/4] btrfs-progs: Introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV SB flags Date: Tue, 29 Mar 2016 22:27:18 +0800 Message-Id: <1459261641-32254-1-git-send-email-anand.jain@oracle.com> In-Reply-To: <1459261349-32206-1-git-send-email-anand.jain@oracle.com> References: <1459261349-32206-1-git-send-email-anand.jain@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Signed-off-by: Anand Jain --- ctree.h | 4 +++- volumes.c | 4 ++++ volumes.h | 2 ++ 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/ctree.h b/ctree.h index 5ab0f4a45a15..97cbd032fbb1 100644 --- a/ctree.h +++ b/ctree.h @@ -480,6 +480,7 @@ struct btrfs_super_block { #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) +#define BTRFS_FEATURE_INCOMPAT_SPARE_DEV (1ULL << 10) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL @@ -495,7 +496,8 @@ struct btrfs_super_block { BTRFS_FEATURE_INCOMPAT_RAID56 | \ BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ - BTRFS_FEATURE_INCOMPAT_NO_HOLES) + BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) /* * A leaf is full of items. offset and size tell us where to find diff --git a/volumes.c b/volumes.c index 4d22db25be1d..2a5dcd40c092 100644 --- a/volumes.c +++ b/volumes.c @@ -101,6 +101,10 @@ static int device_list_add(const char *path, fs_devices->latest_devid = devid; fs_devices->latest_trans = found_transid; fs_devices->lowest_devid = (u64)-1; + if (btrfs_super_incompat_flags(disk_super) & + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) + fs_devices->spare = 1; + device = NULL; } else { device = __find_device(&fs_devices->devices, devid, diff --git a/volumes.h b/volumes.h index c0007adc6a24..79cec37e9194 100644 --- a/volumes.h +++ b/volumes.h @@ -83,6 +83,8 @@ struct btrfs_fs_devices { int seeding; struct btrfs_fs_devices *seed; + + int spare; }; struct btrfs_bio_stripe { -- 2.7.0