diff --git a/kernel/lib_log.c b/kernel/lib_log.c
index 5e7afa31..b9a26ffd 100644
--- a/kernel/lib_log.c
+++ b/kernel/lib_log.c
@@ -467,7 +467,7 @@ restart:
 		GENERIC_INPUT_CALL(logst->input, mref_io, mref);
 
 		wait_event_interruptible_timeout(logst->event, logst->got, 60 * HZ);
-		status = -EIO;
+		status = -ETIME;
 		if (!logst->got)
 			goto done_put;
 		status = logst->error_code;
diff --git a/kernel/mars_bio.c b/kernel/mars_bio.c
index 87641dc7..b949caca 100644
--- a/kernel/mars_bio.c
+++ b/kernel/mars_bio.c
@@ -209,7 +209,7 @@ int make_bio(struct bio_brick *brick, void *data, int len, loff_t pos, struct bi
 
 	if (unlikely(rest_len != 0)) {
 		MARS_ERR("computation of bvec_count %d was wrong, diff=%d\n", bvec_count, rest_len);
-		status = -EIO;
+		status = -EINVAL;
 		goto out;
 	}
 
diff --git a/kernel/mars_client.c b/kernel/mars_client.c
index d1062889..8cc5f5b0 100644
--- a/kernel/mars_client.c
+++ b/kernel/mars_client.c
@@ -173,7 +173,7 @@ static int client_get_info(struct client_output *output, struct mars_info *info)
 	wake_up_interruptible(&output->event);
 	
 	wait_event_interruptible_timeout(output->info_event, output->got_info, 60 * HZ);
-	status = -EIO;
+	status = -ETIME;
 	if (output->got_info && info) {
 		memcpy(info, &output->info, sizeof(*info));
 		status = 0;
diff --git a/kernel/mars_sio.c b/kernel/mars_sio.c
index 5c6e2210..fd1a674f 100644
--- a/kernel/mars_sio.c
+++ b/kernel/mars_sio.c
@@ -202,7 +202,7 @@ int write_aops(struct sio_output *output, struct mref_object *mref)
 		if (ret) {
 			MARS_ERR("cannot start pagecache_write_begin() error=%d\n", ret);
 			if (ret >= 0)
-				ret = -EIO;
+				ret = -EINVAL;
 			goto fail;
 		}
 
@@ -221,7 +221,7 @@ int write_aops(struct sio_output *output, struct mref_object *mref)
 		if (ret < 0 || ret != copied || transfer_result) {
 			MARS_ERR("write error %d\n", ret);
 			if (ret >= 0)
-				ret = -EIO;
+				ret = -EINVAL;
 			goto fail;
 		}
 		
@@ -288,7 +288,7 @@ int read_aops(struct sio_output *output, struct mref_object *mref)
 {
 	loff_t pos = mref->ref_pos;
 	int len = mref->ref_len;
-	int ret = -EIO;
+	int ret;
 
 #ifdef USE_VFS_READ
 	mm_segment_t oldfs;
diff --git a/kernel/sy_old/mars_light.c b/kernel/sy_old/mars_light.c
index fd451041..d7922f18 100644
--- a/kernel/sy_old/mars_light.c
+++ b/kernel/sy_old/mars_light.c
@@ -1072,7 +1072,7 @@ static
 int _update_link_when_necessary(struct mars_rotate *rot, const char *type, const char *old, const char *new)
 {
 	char *check = NULL;
-	int status = -EIO;
+	int status = -EINVAL;
 	bool res = false;
 
 	if (unlikely(!old || !new))
diff --git a/kernel/sy_old/sy_generic.c b/kernel/sy_old/sy_generic.c
index cec63238..bdc716ae 100644
--- a/kernel/sy_old/sy_generic.c
+++ b/kernel/sy_old/sy_generic.c
@@ -1423,7 +1423,7 @@ int mars_kill_brick(struct mars_brick *brick)
 		status = 0;
 	} else {
 		MARS_ERR("brick '%s' '%s' is not off\n", SAFE_STR(brick->brick_name), SAFE_STR(brick->brick_path));
-		status = -EIO;
+		status = -EUCLEAN;
 	}
 
 done: