e9dd159873
If the metadata_version is -mdXXX/whatever rather than /mdXXX/whatever then the array is readonly and should be left alone by mdmon. Signed-off-by: NeilBrown <neilb@suse.de>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
#ifdef DEBUG
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#define dprintf(fmt, arg...) \
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fprintf(stderr, fmt, ##arg)
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#else
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#define dprintf(fmt, arg...) \
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({ if (0) fprintf(stderr, fmt, ##arg); 0; })
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#endif
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enum array_state { clear, inactive, suspended, readonly, read_auto,
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clean, active, write_pending, active_idle, bad_word};
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enum sync_action { idle, reshape, resync, recover, check, repair, bad_action };
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struct active_array {
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struct mdinfo info;
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struct supertype *container;
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struct active_array *next, *replaces;
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int action_fd;
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int resync_start_fd;
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int metadata_fd; /* for monitoring rw/ro status */
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enum array_state prev_state, curr_state, next_state;
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enum sync_action prev_action, curr_action, next_action;
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int check_degraded; /* flag set by mon, read by manage */
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int devnum;
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unsigned long long resync_start;
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};
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/*
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* Metadata updates are handled by the monitor thread,
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* as it has exclusive access to the metadata.
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* When the manager want to updates metadata, either
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* for it's own reason (e.g. committing a spare) or
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* on behalf of mdadm, it creates a metadata_update
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* structure and queues it to the monitor.
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* Updates are created and processed by code under the
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* superswitch. All common code sees them as opaque
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* blobs.
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*/
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extern struct metadata_update *update_queue, *update_queue_handled;
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#define MD_MAJOR 9
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extern struct active_array *container;
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extern struct active_array *discard_this;
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extern struct active_array *pending_discard;
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extern struct md_generic_cmd *active_cmd;
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void remove_pidfile(char *devname);
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void do_monitor(struct supertype *container);
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void do_manager(struct supertype *container);
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int read_dev_state(int fd);
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int get_resync_start(struct active_array *a);
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struct mdstat_ent *mdstat_read(int hold, int start);
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extern int exit_now, manager_ready;
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extern int mon_tid, mgr_tid;
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extern int monitor_loop_cnt;
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