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| author | Warner Losh <imp@FreeBSD.org> | 2019-07-18 21:58:51 +0000 |
|---|---|---|
| committer | Warner Losh <imp@FreeBSD.org> | 2019-07-18 21:58:51 +0000 |
| commit | c75bdc044d4dfc8d19954eac7e8a77fb256d58ba (patch) | |
| tree | e04fc5c2c332acbcfbdaeec957198c9294c88b47 /sys/dev/nvme/nvme.c | |
| parent | f95dfdbe69ac186209f92609af95d2d99d3fa050 (diff) | |
| download | src-c75bdc044d4dfc8d19954eac7e8a77fb256d58ba.tar.gz src-c75bdc044d4dfc8d19954eac7e8a77fb256d58ba.zip | |
Provide new tunable hw.nvme.verbose_cmd_dump
The nvme drive dumps only the most relevant details about a command when it
fails. However, there are times this is not sufficient (such as debugging weird
issues for a new drive with a vendor). Setting hw.nvme.verbose_cmd_dump=1
in loader.conf will enable more complete debugging information about each
command that fails.
Reviewed by: rpokala
Sponsored by: Netflix
Differential Version: https://reviews.freebsd.org/D20988
Notes
Notes:
svn path=/head/; revision=350118
Diffstat (limited to 'sys/dev/nvme/nvme.c')
| -rw-r--r-- | sys/dev/nvme/nvme.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/nvme/nvme.c b/sys/dev/nvme/nvme.c index 84fe58a9f93e..449f2367c54f 100644 --- a/sys/dev/nvme/nvme.c +++ b/sys/dev/nvme/nvme.c @@ -54,6 +54,9 @@ struct nvme_consumer nvme_consumer[NVME_MAX_CONSUMERS]; uma_zone_t nvme_request_zone; int32_t nvme_retry_count; +int nvme_verbose_cmd_dump; + +TUNABLE_INT("hw.nvme.verbose_cmd_dump", &nvme_verbose_cmd_dump); MALLOC_DEFINE(M_NVME, "nvme", "nvme(4) memory allocations"); |