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Add pool state /proc entry, "SUSPENDED" pools

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1. Add a proc entry to display the pool's state:

$ cat /proc/spl/kstat/zfs/tank/state
ONLINE

This is done without using the spa config locks, so it will
never hang.

2. Fix 'zpool status' and 'zpool list -o health' output to print
"SUSPENDED" instead of "ONLINE" for suspended pools.

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7331 
Closes #7563
This commit is contained in:
Tony Hutter
2018-06-06 09:33:54 -07:00
committed by Brian Behlendorf
parent 2d9142c9d4
commit f0ed6c7448
18 changed files with 383 additions and 26 deletions
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include/sys/spa.h
+3
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@@ -873,6 +873,7 @@ typedef struct spa_stats {
spa_stats_history_t tx_assign_histogram;
spa_stats_history_t io_history;
spa_stats_history_t mmp_history;
spa_stats_history_t state; /* pool state */
} spa_stats_t;
typedef enum txg_state {
@@ -1048,6 +1049,8 @@ extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
dmu_tx_t *tx, const char *fmt, ...);
extern const char *spa_state_to_name(spa_t *spa);
/* error handling */
struct zbookmark_phys;
extern void spa_log_error(spa_t *spa, const zbookmark_phys_t *zb);