From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ilya Dryomov Subject: [PATCH 11/21] Btrfs: devid filter Date: Tue, 23 Aug 2011 23:01:52 +0300 Message-ID: <1314129722-31601-12-git-send-email-idryomov@gmail.com> References: <1314129722-31601-1-git-send-email-idryomov@gmail.com> Cc: Chris Mason , Hugo Mills , idryomov@gmail.com To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <1314129722-31601-1-git-send-email-idryomov@gmail.com> List-ID: Relocate chunks which have at least one stripe located on a device with devid X. Signed-off-by: Ilya Dryomov --- fs/btrfs/volumes.c | 23 +++++++++++++++++++++++ fs/btrfs/volumes.h | 1 + 2 files changed, 24 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index b49ecfa..ce2a9e0 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2220,6 +2220,23 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset, return ret; } +static int chunk_devid_filter(struct extent_buffer *leaf, + struct btrfs_chunk *chunk, + struct btrfs_restripe_args *rargs) +{ + struct btrfs_stripe *stripe; + int num_stripes = btrfs_chunk_num_stripes(leaf, chunk); + int i; + + for (i = 0; i < num_stripes; i++) { + stripe = btrfs_stripe_nr(chunk, i); + if (btrfs_stripe_devid(leaf, stripe) == rargs->devid) + return 0; + } + + return 1; +} + static int chunk_soft_convert_filter(u64 chunk_profile, struct btrfs_restripe_args *rargs) { @@ -2269,6 +2286,12 @@ static int should_restripe_chunk(struct btrfs_root *root, return 0; } + /* devid filter */ + if ((rargs->flags & BTRFS_RESTRIPE_ARGS_DEVID) && + chunk_devid_filter(leaf, chunk, rargs)) { + return 0; + } + /* soft profile changing mode */ if ((rargs->flags & BTRFS_RESTRIPE_ARGS_SOFT) && chunk_soft_convert_filter(chunk_type, rargs)) { diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index c6baf4b..1b8dc3e 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -187,6 +187,7 @@ struct map_lookup { */ #define BTRFS_RESTRIPE_ARGS_PROFILES (1ULL << 0) #define BTRFS_RESTRIPE_ARGS_USAGE (1ULL << 1) +#define BTRFS_RESTRIPE_ARGS_DEVID (1ULL << 2) /* * Profile changing flags. When SOFT is set we won't relocate chunk if -- 1.7.5.4