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* master - Use lv_is_active instead of lv_info()
@ 2012-10-17 13:43 Zdenek Kabelac
  2012-11-20 11:57 ` Marian Csontos
  0 siblings, 1 reply; 2+ messages in thread
From: Zdenek Kabelac @ 2012-10-17 13:43 UTC (permalink / raw)
  To: lvm-devel

Gitweb:        http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=bf2741376d47411994d4065863acab8e405ff5c7
Commit:        bf2741376d47411994d4065863acab8e405ff5c7
Parent:        e431b19bac29cf8fc21530118eb283b6ae703cbb
Author:        Zdenek Kabelac <zkabelac@redhat.com>
AuthorDate:    Tue Jan 31 23:42:53 2012 +0100
Committer:     Zdenek Kabelac <zkabelac@redhat.com>
CommitterDate: Wed Oct 17 15:42:31 2012 +0200

Use lv_is_active instead of lv_info()

Usage of lv_is_active makes it more obvious what is being checked.
---
 WHATS_NEW               |    1 +
 lib/metadata/lv_manip.c |    5 ++---
 lib/metadata/mirror.c   |    9 +++------
 lib/report/report.c     |    3 +--
 4 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/WHATS_NEW b/WHATS_NEW
index 370c7e5..8ba9f2d 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
 Version 2.02.99 - 
 ===================================
+  Use lv_is_active() instead of lv_info() call.
   Cleanup some log_error message and use log_warn instead.
   
 Version 2.02.98 - 15th October 2012
diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index d2aca00..32a207d 100644
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -4218,7 +4218,6 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
 	struct logical_volume *pool_lv;
 	struct lv_list *lvl;
 	int origin_active = 0;
-	struct lvinfo info;
 
 	if (new_lv_name && find_lv_in_vg(vg, new_lv_name)) {
 		log_error("Logical volume \"%s\" already exists in "
@@ -4350,12 +4349,12 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
 				log_warn("WARNING: See global/mirror_segtype_default in lvm.conf.");
 			}
 
-			if (!lv_info(cmd, org, 0, &info, 0, 0)) {
+			if (!lv_is_active(org)) {
 				log_error("Check for existence of active snapshot "
 					  "origin '%s' failed.", org->name);
 				return NULL;
 			}
-			origin_active = info.exists;
+			origin_active = 1;
 
 			if (vg_is_clustered(vg) &&
 			    !lv_is_active_exclusive_locally(org)) {
diff --git a/lib/metadata/mirror.c b/lib/metadata/mirror.c
index c4683df..084c93a 100644
--- a/lib/metadata/mirror.c
+++ b/lib/metadata/mirror.c
@@ -282,7 +282,6 @@ static int _init_mirror_log(struct cmd_context *cmd,
 			    struct dm_list *tags, int remove_on_failure)
 {
 	struct str_list *sl;
-	struct lvinfo info;
 	uint64_t orig_status = log_lv->status;
 	int was_active = 0;
 
@@ -298,14 +297,13 @@ static int _init_mirror_log(struct cmd_context *cmd,
 	}
 
 	/* If the LV is active, deactivate it first. */
-	if (lv_info(cmd, log_lv, 0, &info, 0, 0) && info.exists) {
-		(void)deactivate_lv(cmd, log_lv);
+	if (lv_is_active(log_lv)) {
 		/*
 		 * FIXME: workaround to fail early
 		 * Ensure that log is really deactivated because deactivate_lv
 		 * on cluster do not fail if there is log_lv with different UUID.
 		 */
-		if (lv_info(cmd, log_lv, 0, &info, 0, 0) && info.exists) {
+		if (!deactivate_lv(cmd, log_lv)) {
 			log_error("Aborting. Unable to deactivate mirror log.");
 			goto revert_new_lv;
 		}
@@ -1714,7 +1712,6 @@ int remove_mirror_log(struct cmd_context *cmd,
 		      int force)
 {
 	percent_t sync_percent;
-	struct lvinfo info;
 	struct volume_group *vg = lv->vg;
 
 	/* Unimplemented features */
@@ -1724,7 +1721,7 @@ int remove_mirror_log(struct cmd_context *cmd,
 	}
 
 	/* Had disk log, switch to core. */
-	if (lv_info(cmd, lv, 0, &info, 0, 0) && info.exists) {
+	if (lv_is_active(lv)) {
 		if (!lv_mirror_percent(cmd, lv, 0, &sync_percent,
 				       NULL)) {
 			log_error("Unable to determine mirror sync status.");
diff --git a/lib/report/report.c b/lib/report/report.c
index eeca282..b1e2bc1 100644
--- a/lib/report/report.c
+++ b/lib/report/report.c
@@ -830,7 +830,6 @@ static int _snpercent_disp(struct dm_report *rh __attribute__((unused)), struct
 			   const void *data, void *private __attribute__((unused)))
 {
 	const struct logical_volume *lv = (const struct logical_volume *) data;
-	struct lvinfo info;
 	percent_t snap_percent;
 	uint64_t *sortval;
 	char *repstr;
@@ -847,7 +846,7 @@ static int _snpercent_disp(struct dm_report *rh __attribute__((unused)), struct
 	}
 
 	if ((!lv_is_cow(lv) && !lv_is_merging_origin(lv)) ||
-	    !lv_info(lv->vg->cmd, lv, 0, &info, 0, 0) || !info.exists) {
+	    !lv_is_active(lv)) {
 		*sortval = UINT64_C(0);
 		dm_report_field_set_value(field, "", sortval);
 		return 1;



^ permalink raw reply related	[flat|nested] 2+ messages in thread

* master - Use lv_is_active instead of lv_info()
  2012-10-17 13:43 master - Use lv_is_active instead of lv_info() Zdenek Kabelac
@ 2012-11-20 11:57 ` Marian Csontos
  0 siblings, 0 replies; 2+ messages in thread
From: Marian Csontos @ 2012-11-20 11:57 UTC (permalink / raw)
  To: lvm-devel

On 10/17/2012 03:43 PM, Zdenek Kabelac wrote:
> Gitweb:        http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=bf2741376d47411994d4065863acab8e405ff5c7
> Commit:        bf2741376d47411994d4065863acab8e405ff5c7
> Parent:        e431b19bac29cf8fc21530118eb283b6ae703cbb
> Author:        Zdenek Kabelac<zkabelac@redhat.com>
> AuthorDate:    Tue Jan 31 23:42:53 2012 +0100
> Committer:     Zdenek Kabelac<zkabelac@redhat.com>
> CommitterDate: Wed Oct 17 15:42:31 2012 +0200
>
> Use lv_is_active instead of lv_info()
>
> Usage of lv_is_active makes it more obvious what is being checked.
> ---
>   WHATS_NEW               |    1 +
>   lib/metadata/lv_manip.c |    5 ++---
>   lib/metadata/mirror.c   |    9 +++------
>   lib/report/report.c     |    3 +--
>   4 files changed, 7 insertions(+), 11 deletions(-)
>
> diff --git a/WHATS_NEW b/WHATS_NEW
> index 370c7e5..8ba9f2d 100644
> --- a/WHATS_NEW
> +++ b/WHATS_NEW
> @@ -1,5 +1,6 @@
>   Version 2.02.99 -
>   ===================================
> +  Use lv_is_active() instead of lv_info() call.
>     Cleanup some log_error message and use log_warn instead.
>
>   Version 2.02.98 - 15th October 2012
> diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
> index d2aca00..32a207d 100644
> --- a/lib/metadata/lv_manip.c
> +++ b/lib/metadata/lv_manip.c
> @@ -4218,7 +4218,6 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
>   	struct logical_volume *pool_lv;
>   	struct lv_list *lvl;
>   	int origin_active = 0;
> -	struct lvinfo info;
>
>   	if (new_lv_name&&  find_lv_in_vg(vg, new_lv_name)) {
>   		log_error("Logical volume \"%s\" already exists in "
> @@ -4350,12 +4349,12 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
>   				log_warn("WARNING: See global/mirror_segtype_default in lvm.conf.");
>   			}
>

> -			if (!lv_info(cmd, org, 0,&info, 0, 0)) {
> +			if (!lv_is_active(org)) {
>   				log_error("Check for existence of active snapshot "
>   					  "origin '%s' failed.", org->name);
>   				return NULL;
>   			}
> -			origin_active = info.exists;
> +			origin_active = 1;

Zdenku, I think this fragment is not equivalent to the original and 
leads to regression: one can not make a snapshot of an inactive LV.

This is a regression, and it was already fixed once:

https://bugzilla.redhat.com/show_bug.cgi?id=805300

I am not 100% sure this is the cause - I see different error message, 
but this was fine in 2.02.98, it was fine in 10ba799a, and was failing 
in a820a686.

The reproducer is:

#!/bin/bash

VG=vg
lvcreate -L 300M $VG -n origin
lvchange -an $VG/origin
lvcreate -s /dev/$VG/origin -c 32 -n snap_of_inactive -L 100M
    One or more specified logical volume(s) not      found.

If you are sure this is correct, I will open a new BZ

-- Marian

>
>   			if (vg_is_clustered(vg)&&
>   			!lv_is_active_exclusive_locally(org)) {
> diff --git a/lib/metadata/mirror.c b/lib/metadata/mirror.c
> index c4683df..084c93a 100644
> --- a/lib/metadata/mirror.c
> +++ b/lib/metadata/mirror.c
> @@ -282,7 +282,6 @@ static int _init_mirror_log(struct cmd_context *cmd,
>   			    struct dm_list *tags, int remove_on_failure)
>   {
>   	struct str_list *sl;
> -	struct lvinfo info;
>   	uint64_t orig_status = log_lv->status;
>   	int was_active = 0;
>
> @@ -298,14 +297,13 @@ static int _init_mirror_log(struct cmd_context *cmd,
>   	}
>
>   	/* If the LV is active, deactivate it first. */
> -	if (lv_info(cmd, log_lv, 0,&info, 0, 0)&&  info.exists) {
> -		(void)deactivate_lv(cmd, log_lv);
> +	if (lv_is_active(log_lv)) {
>   		/*
>   		 * FIXME: workaround to fail early
>   		 * Ensure that log is really deactivated because deactivate_lv
>   		 * on cluster do not fail if there is log_lv with different UUID.
>   		 */
> -		if (lv_info(cmd, log_lv, 0,&info, 0, 0)&&  info.exists) {
> +		if (!deactivate_lv(cmd, log_lv)) {
>   			log_error("Aborting. Unable to deactivate mirror log.");
>   			goto revert_new_lv;
>   		}
> @@ -1714,7 +1712,6 @@ int remove_mirror_log(struct cmd_context *cmd,
>   		      int force)
>   {
>   	percent_t sync_percent;
> -	struct lvinfo info;
>   	struct volume_group *vg = lv->vg;
>
>   	/* Unimplemented features */
> @@ -1724,7 +1721,7 @@ int remove_mirror_log(struct cmd_context *cmd,
>   	}
>
>   	/* Had disk log, switch to core. */
> -	if (lv_info(cmd, lv, 0,&info, 0, 0)&&  info.exists) {
> +	if (lv_is_active(lv)) {
>   		if (!lv_mirror_percent(cmd, lv, 0,&sync_percent,
>   				       NULL)) {
>   			log_error("Unable to determine mirror sync status.");
> diff --git a/lib/report/report.c b/lib/report/report.c
> index eeca282..b1e2bc1 100644
> --- a/lib/report/report.c
> +++ b/lib/report/report.c
> @@ -830,7 +830,6 @@ static int _snpercent_disp(struct dm_report *rh __attribute__((unused)), struct
>   			   const void *data, void *private __attribute__((unused)))
>   {
>   	const struct logical_volume *lv = (const struct logical_volume *) data;
> -	struct lvinfo info;
>   	percent_t snap_percent;
>   	uint64_t *sortval;
>   	char *repstr;
> @@ -847,7 +846,7 @@ static int _snpercent_disp(struct dm_report *rh __attribute__((unused)), struct
>   	}
>
>   	if ((!lv_is_cow(lv)&&  !lv_is_merging_origin(lv)) ||
> -	    !lv_info(lv->vg->cmd, lv, 0,&info, 0, 0) || !info.exists) {
> +	    !lv_is_active(lv)) {
>   		*sortval = UINT64_C(0);
>   		dm_report_field_set_value(field, "", sortval);
>   		return 1;
>
> --
> lvm-devel mailing list
> lvm-devel at redhat.com
> https://www.redhat.com/mailman/listinfo/lvm-devel



^ permalink raw reply	[flat|nested] 2+ messages in thread

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2012-10-17 13:43 master - Use lv_is_active instead of lv_info() Zdenek Kabelac
2012-11-20 11:57 ` Marian Csontos

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