From: Goffredo Baroncelli <kreijack@libero.it>
To: David Sterba <dsterba@suse.cz>
Cc: linux-btrfs@vger.kernel.org, Goffredo Baroncelli <kreijack@inwind.it>
Subject: [PATCH] btrfs: add support for RAID1C3 and RAID1C4
Date: Mon, 2 Dec 2019 19:19:28 +0100 [thread overview]
Message-ID: <20191202181928.3098-2-kreijack@libero.it> (raw)
In-Reply-To: <20191202181928.3098-1-kreijack@libero.it>
From: Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
---
grub-core/fs/btrfs.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
index 48bd3d04a..191c5cd63 100644
--- a/grub-core/fs/btrfs.c
+++ b/grub-core/fs/btrfs.c
@@ -136,6 +136,8 @@ struct grub_btrfs_chunk_item
#define GRUB_BTRFS_CHUNK_TYPE_RAID10 0x40
#define GRUB_BTRFS_CHUNK_TYPE_RAID5 0x80
#define GRUB_BTRFS_CHUNK_TYPE_RAID6 0x100
+#define GRUB_BTRFS_CHUNK_TYPE_RAID1C3 0x200
+#define GRUB_BTRFS_CHUNK_TYPE_RAID1C4 0x400
grub_uint8_t dummy2[0xc];
grub_uint16_t nstripes;
grub_uint16_t nsubstripes;
@@ -1088,6 +1090,24 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data, grub_disk_addr_t addr,
stripe_offset = chunk_stripe_length * high + low;
csize = chunk_stripe_length - low;
+ break;
+ }
+ case GRUB_BTRFS_CHUNK_TYPE_RAID1C3:
+ {
+ grub_dprintf ("btrfs", "RAID1C3\n");
+ stripen = 0;
+ stripe_offset = off;
+ csize = grub_le_to_cpu64 (chunk->size) - off;
+ redundancy = 3;
+ break;
+ }
+ case GRUB_BTRFS_CHUNK_TYPE_RAID1C4:
+ {
+ grub_dprintf ("btrfs", "RAID1C4\n");
+ stripen = 0;
+ stripe_offset = off;
+ csize = grub_le_to_cpu64 (chunk->size) - off;
+ redundancy = 4;
break;
}
default:
--
2.24.0
next prev parent reply other threads:[~2019-12-02 18:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 18:19 [RFC] GRUB: add support for RAID1C3 and RAID1C4 Goffredo Baroncelli
2019-12-02 18:19 ` Goffredo Baroncelli [this message]
2019-12-03 13:23 ` David Sterba
2019-12-03 17:30 ` Goffredo Baroncelli
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