dm log userspace check additional error conditions
 

Patch name: dm-log-userspace-check-additional-error-conditions.patch

This patch resolves unhandled errors.

When constructing a mirror, it is possible for the initial request to
fail for other reasons besides just -ESRCH. These must be handled too.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>

Index: linux-2.6/drivers/md/dm-log-userspace-base.c
================================================== =================
--- linux-2.6.orig/drivers/md/dm-log-userspace-base.c
+++ linux-2.6/drivers/md/dm-log-userspace-base.c
@@ -181,8 +181,11 @@ static int userspace_ctr(struct dm_dirty
r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_CTR,
ctr_str, str_size, NULL, NULL);

- if (r == -ESRCH) {
- DMERR("Userspace log server not found");
+ if (r < 0) {
+ if (r == -ESRCH)
+ DMERR("Userspace log server not found");
+ else
+ DMERR("Userspace log server failed to create log");
goto out;
}


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