On Fri, Oct 12, 2018 at 12:26:52AM +0200, Martin Wilck wrote:
> emc_clariion is the only path checker that was using a non-constant
> message ("read error" case). This isn't possible with the msgid
> approach any more. Use condlog() for the dynamic log message and
> simply report "read error" as checker message.
>
Reviewed-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
> Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
> ---
> libmultipath/checkers/emc_clariion.c | 60 +++++++++++++++++++---------
> 1 file changed, 42 insertions(+), 18 deletions(-)
>
> diff --git a/libmultipath/checkers/emc_clariion.c b/libmultipath/checkers/emc_clariion.c
> index 9115b1b9..f8e55b93 100644
> --- a/libmultipath/checkers/emc_clariion.c
> +++ b/libmultipath/checkers/emc_clariion.c
> @@ -41,6 +41,35 @@
> ((struct emc_clariion_checker_LU_context *)\
> (*c->mpcontext))->inactive_snap = 0
>
> +enum {
> + MSG_CLARIION_QUERY_FAILED = CHECKER_FIRST_MSGID,
> + MSG_CLARIION_QUERY_ERROR,
> + MSG_CLARIION_PATH_CONFIG,
> + MSG_CLARIION_UNIT_REPORT,
> + MSG_CLARIION_PATH_NOT_AVAIL,
> + MSG_CLARIION_LUN_UNBOUND,
> + MSG_CLARIION_WWN_CHANGED,
> + MSG_CLARIION_READ_ERROR,
> + MSG_CLARIION_PASSIVE_GOOD,
> +};
> +
> +#define _IDX(x) (MSG_CLARIION_ ## x - CHECKER_FIRST_MSGID)
> +const char *libcheck_msgtable[] = {
> + [_IDX(QUERY_FAILED)] = ": sending query command failed",
> + [_IDX(QUERY_ERROR)] = ": query command indicates error",
> + [_IDX(PATH_CONFIG)] =
> + ": Path not correctly configured for failover",
> + [_IDX(UNIT_REPORT)] =
> + ": Path unit report page in unknown format",
> + [_IDX(PATH_NOT_AVAIL)] =
> + ": Path not available for normal operations",
> + [_IDX(LUN_UNBOUND)] = ": Logical Unit is unbound or LUNZ",
> + [_IDX(WWN_CHANGED)] = ": Logical Unit WWN has changed",
> + [_IDX(READ_ERROR)] = ": Read error",
> + [_IDX(PASSIVE_GOOD)] = ": Active path is healthy",
> + NULL,
> +};
> +
> struct emc_clariion_checker_path_context {
> char wwn[16];
> unsigned wwn_set;
> @@ -116,17 +145,16 @@ int libcheck_check (struct checker * c)
> io_hdr.timeout = c->timeout * 1000;
> io_hdr.pack_id = 0;
> if (ioctl(c->fd, SG_IO, &io_hdr) < 0) {
> - MSG(c, "emc_clariion_checker: sending query command failed");
> + c->msgid = MSG_CLARIION_QUERY_FAILED;
> return PATH_DOWN;
> }
> if (io_hdr.info & SG_INFO_OK_MASK) {
> - MSG(c, "emc_clariion_checker: query command indicates error");
> + c->msgid = MSG_CLARIION_QUERY_ERROR;
> return PATH_DOWN;
> }
> if (/* Verify the code page - right page & revision */
> sense_buffer[1] != 0xc0 || sense_buffer[9] != 0x00) {
> - MSG(c, "emc_clariion_checker: Path unit report page in "
> - "unknown format");
> + c->msgid = MSG_CLARIION_UNIT_REPORT;
> return PATH_DOWN;
> }
>
> @@ -140,22 +168,19 @@ int libcheck_check (struct checker * c)
> ((sense_buffer[28] & 0x07) != 0x06))
> /* Arraycommpath should be set to 1 */
> || (sense_buffer[30] & 0x04) != 0x04) {
> - MSG(c, "emc_clariion_checker: Path not correctly configured "
> - "for failover");
> + c->msgid = MSG_CLARIION_PATH_CONFIG;
> return PATH_DOWN;
> }
>
> if ( /* LUN operations should indicate normal operations */
> sense_buffer[48] != 0x00) {
> - MSG(c, "emc_clariion_checker: Path not available for normal "
> - "operations");
> + c->msgid = MSG_CLARIION_PATH_NOT_AVAIL;
> return PATH_SHAKY;
> }
>
> if ( /* LUN should at least be bound somewhere and not be LUNZ */
> sense_buffer[4] == 0x00) {
> - MSG(c, "emc_clariion_checker: Logical Unit is unbound "
> - "or LUNZ");
> + c->msgid = MSG_CLARIION_LUN_UNBOUND;
> return PATH_DOWN;
> }
>
> @@ -166,8 +191,7 @@ int libcheck_check (struct checker * c)
> */
> if (ct->wwn_set) {
> if (memcmp(ct->wwn, &sense_buffer[10], 16) != 0) {
> - MSG(c, "emc_clariion_checker: Logical Unit WWN "
> - "has changed!");
> + c->msgid = MSG_CLARIION_WWN_CHANGED;
> return PATH_DOWN;
> }
> } else {
> @@ -202,14 +226,15 @@ int libcheck_check (struct checker * c)
> condlog(3, "emc_clariion_checker: Active "
> "path to inactive snapshot WWN %s.",
> wwnstr);
> - } else
> - MSG(c, "emc_clariion_checker: Read "
> + } else {
> + condlog(3, "emc_clariion_checker: Read "
> "error for WWN %s. Sense data are "
> "0x%x/0x%x/0x%x.", wwnstr,
> sbb[2]&0xf, sbb[12], sbb[13]);
> + c->msgid = MSG_CLARIION_READ_ERROR;
> + }
> } else {
> - MSG(c, "emc_clariion_checker: Active path is "
> - "healthy.");
> + c->msgid = MSG_CLARIION_PASSIVE_GOOD;
> /*
> * Remove the path from the set of paths to inactive
> * snapshot LUs if it was in this list since the
> @@ -225,8 +250,7 @@ int libcheck_check (struct checker * c)
> wwnstr);
> ret = PATH_DOWN;
> } else {
> - MSG(c,
> - "emc_clariion_checker: Passive path is healthy.");
> + c->msgid = MSG_CLARIION_PASSIVE_GOOD;
> ret = PATH_UP; /* not ghost */
> }
> }
> --
> 2.19.0
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
