From: Andy Grover <agrover@redhat.com>
To: gregkh@linuxfoundation.org, snitzer@redhat.com
Cc: dm-devel@redhat.com, linux-kernel@vger.kernel.org
Subject: [PATCH 8/9] dm: Generate uevents for thin targets
Date: Mon, 3 Oct 2016 12:22:59 -0700 [thread overview]
Message-ID: <1475522580-16723-9-git-send-email-agrover@redhat.com> (raw)
In-Reply-To: <1475522580-16723-1-git-send-email-agrover@redhat.com>
Generate uevents when thin pool devices hit data or metadata low water
marks, and when pool mode changes.
Signed-off-by: Andy Grover <agrover@redhat.com>
---
drivers/md/dm-thin.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index d1c05c1..0778a2a 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1429,6 +1429,7 @@ static void check_low_water_mark(struct pool *pool, dm_block_t free_blocks)
spin_lock_irqsave(&pool->lock, flags);
pool->low_water_triggered = true;
spin_unlock_irqrestore(&pool->lock, flags);
+ dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_LOW_WATER_DATA");
dm_table_event(pool->ti->table);
}
}
@@ -2397,6 +2398,7 @@ static enum pool_mode get_pool_mode(struct pool *pool)
static void notify_of_pool_mode_change(struct pool *pool, const char *new_mode)
{
+ dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_POOL_MODE");
dm_table_event(pool->ti->table);
DMINFO("%s: switching pool to %s mode",
dm_device_name(pool->pool_md), new_mode);
@@ -3095,6 +3097,7 @@ static void metadata_low_callback(void *context)
DMWARN("%s: reached low water mark for metadata device: sending event.",
dm_device_name(pool->pool_md));
+ dm_uevent_add(pool->ti, KOBJ_CHANGE, "THIN_LOW_WATER_METADATA");
dm_table_event(pool->ti->table);
}
--
2.7.4
next prev parent reply other threads:[~2016-10-03 19:23 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-03 19:22 [PATCH 0/9] Generate uevents for all DM events Andy Grover
2016-10-03 19:22 ` [PATCH 1/9] dm: Do not export dm_send_uevents Andy Grover
2016-10-03 19:22 ` [PATCH 2/9] dm: Move multipath-specific stuff out of dm-uevent.c Andy Grover
2016-10-03 19:22 ` [PATCH 3/9] dm: Inline dm_build_path_uevent into dm_path_uevent Andy Grover
2016-10-03 19:22 ` [PATCH 4/9] dm: Update dm-uevent.txt Andy Grover
2016-10-03 19:22 ` [PATCH 5/9] dm: Rename dm_build_uevent to dm_uevent_build Andy Grover
2016-10-03 19:22 ` [PATCH 6/9] dm: Rename dm_event_add to dm_event_queue Andy Grover
2016-10-03 19:22 ` [PATCH 7/9] dm: Implement dm_uevent_add() Andy Grover
2016-10-03 19:22 ` Andy Grover [this message]
2016-10-03 19:23 ` [PATCH 9/9] dm: Generate uevents for other targets Andy Grover
2016-10-03 19:29 ` [PATCH 0/9] Generate uevents for all DM events Mike Snitzer
2016-10-04 7:20 ` Greg KH
2016-10-04 23:39 ` Andy Grover
2016-10-05 0:40 ` [dm-devel] " Alasdair G Kergon
2016-10-05 6:26 ` Hannes Reinecke
2016-10-05 6:51 ` Greg KH
2016-10-05 17:06 ` Andy Grover
2016-10-05 17:43 ` Alasdair G Kergon
2016-10-05 22:30 ` Andy Grover
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