diff options
| author | Nicholas Bellinger <nab@daterainc.com> | 2017-01-20 02:45:57 +0300 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-02-27 03:21:06 +0300 |
| commit | c87ba9c49c1fa86261448b09c5f1b2223bf7efd9 (patch) | |
| tree | d710dc3220024b8215cb2531fc55a122ebaba07c /include/target | |
| parent | 17c61ad66f2e09a9014ab2d4e1f04c8294427db1 (diff) | |
| download | linux-c87ba9c49c1fa86261448b09c5f1b2223bf7efd9.tar.xz | |
target: Add counters for ABORT_TASK success + failure
This patch introduces two counters for ABORT_TASK success +
failure under:
/sys/kernel/config/target/core/$HBA/$DEV/statistics/scsi_tgt_dev/
that are useful for diagnosing various backend device latency
and front fabric issues.
Normally when folks see alot of aborts_complete happening,
it means the backend device I/O completion latency is high,
and not returning completions fast enough before host side
timeouts trigger.
And normally when folks see alot of aborts_no_task, it means
completions are being posted by target-core into fabric driver
code, but the responses aren't making it back to the host.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 16d3be8395be..49ce5bc9912f 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -766,6 +766,8 @@ struct se_device { u32 dev_index; u64 creation_time; atomic_long_t num_resets; + atomic_long_t aborts_complete; + atomic_long_t aborts_no_task; atomic_long_t num_cmds; atomic_long_t read_bytes; atomic_long_t write_bytes; |