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libceph: support for blacklisting clients

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Reuse ceph_mon_generic_request infrastructure for sending monitor
commands.  In particular, add support for 'blacklist add' to prevent
other, non-responsive clients from making further updates.

Signed-off-by: Douglas Fuller <dfuller@redhat.com>
[idryomov@gmail.com: refactor, misc fixes throughout]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Douglas Fuller
2015-07-22 20:59:52 -04:00
committed by Ilya Dryomov
parent d4ed4a5305
commit 6305a3b415
3 changed files with 96 additions and 0 deletions
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11
include/linux/ceph/ceph_fs.h
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@@ -138,6 +138,9 @@ struct ceph_dir_layout {
#define CEPH_MSG_POOLOP_REPLY 48
#define CEPH_MSG_POOLOP 49
/* mon commands */
#define CEPH_MSG_MON_COMMAND 50
#define CEPH_MSG_MON_COMMAND_ACK 51
/* osd */
#define CEPH_MSG_OSD_MAP 41
@@ -176,6 +179,14 @@ struct ceph_mon_statfs_reply {
struct ceph_statfs st;
} __attribute__ ((packed));
struct ceph_mon_command {
struct ceph_mon_request_header monhdr;
struct ceph_fsid fsid;
__le32 num_strs; /* always 1 */
__le32 str_len;
char str[];
} __attribute__ ((packed));
struct ceph_osd_getmap {
struct ceph_mon_request_header monhdr;
struct ceph_fsid fsid;