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libceph: support the RADOS copy-from operation

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Add support for performing remote object copies using the 'copy-from'
operation.

[ Add COPY_FROM to get_num_data_items(). ]

Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Luis Henriques 2018-10-15 16:45:58 +01:00 • committed by Ilya Dryomov
parent 2ee9dd958d
commit 23ddf9bea9
3 changed files with 135 additions and 0 deletions
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17
include/linux/ceph/osd_client.h
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@ -136,6 +136,13 @@ struct ceph_osd_req_op {
u64 expected_object_size;
u64 expected_write_size;
} alloc_hint;
struct {
u64 snapid;
u64 src_version;
u8 flags;
u32 src_fadvise_flags;
struct ceph_osd_data osd_data;
} copy_from;
};
};
@ -510,6 +517,16 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
struct timespec64 *mtime,
struct page **pages, int nr_pages);
int ceph_osdc_copy_from(struct ceph_osd_client *osdc,
u64 src_snapid, u64 src_version,
struct ceph_object_id *src_oid,
struct ceph_object_locator *src_oloc,
u32 src_fadvise_flags,
struct ceph_object_id *dst_oid,
struct ceph_object_locator *dst_oloc,
u32 dst_fadvise_flags,
u8 copy_from_flags);
/* watch/notify */
struct ceph_osd_linger_request *
ceph_osdc_watch(struct ceph_osd_client *osdc,