[PATCH 1/2] Grow: close file descriptor earlier to avoid "still in use" when stopping

[PATCH 1/2] Grow: close file descriptor earlier to avoid "still in use" when stopping

[Artur Paszkiewicz]

Close fd2 as soon as it is no longer needed, before calling
Grow_continue(). Otherwise, we won't be able to stop an array with
external metadata during reshape, because mdadm running in background
will be keeping it open.

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
---
 Grow.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Grow.c b/Grow.c
index 80d7b22..f65b36a 100644
--- a/Grow.c
+++ b/Grow.c
@@ -4873,6 +4873,9 @@ int Grow_continue_command(char *devname, int fd,
 
 		sysfs_init(content, fd2, mdstat->devnm);
 
+		close(fd2);
+		fd2 = -1;
+
 		/* start mdmon in case it is not running
 		 */
 		if (!mdmon_running(container))
-- 
2.1.4

[PATCH 2/2] imsm: abort reshape if sync_action is not "reshape"

[Artur Paszkiewicz]

When reshape was interrupted, an incorrect checkpoint would be saved in
the migration record. Change wait_for_reshape_imsm() to return -1 when
sync_action is not "reshape" to abort early in imsm_manage_reshape()
without writing the migration record.

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
---
 super-intel.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/super-intel.c b/super-intel.c
index e609e0c..c7efa98 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -10300,8 +10300,10 @@ int wait_for_reshape_imsm(struct mdinfo *sra, int ndata)
 		sysfs_wait(fd, NULL);
 		if (sysfs_get_str(sra, NULL, "sync_action",
 				  action, 20) > 0 &&
-				strncmp(action, "reshape", 7) != 0)
-			break;
+				strncmp(action, "reshape", 7) != 0) {
+			close(fd);
+			return -1;
+		}
 		if (sysfs_fd_get_ll(fd, &completed) < 0) {
 			dprintf("cannot read reshape_position (in loop)\n");
 			close(fd);
-- 
2.1.4

Re: [PATCH 2/2] imsm: abort reshape if sync_action is not "reshape"

[NeilBrown]

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On Wed, Dec 23 2015, Artur Paszkiewicz wrote:

> When reshape was interrupted, an incorrect checkpoint would be saved in
> the migration record. Change wait_for_reshape_imsm() to return -1 when
> sync_action is not "reshape" to abort early in imsm_manage_reshape()
> without writing the migration record.
>
> Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
> ---
>  super-intel.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/super-intel.c b/super-intel.c
> index e609e0c..c7efa98 100644
> --- a/super-intel.c
> +++ b/super-intel.c
> @@ -10300,8 +10300,10 @@ int wait_for_reshape_imsm(struct mdinfo *sra, int ndata)
>  		sysfs_wait(fd, NULL);
>  		if (sysfs_get_str(sra, NULL, "sync_action",
>  				  action, 20) > 0 &&
> -				strncmp(action, "reshape", 7) != 0)
> -			break;
> +				strncmp(action, "reshape", 7) != 0) {
> +			close(fd);
> +			return -1;
> +		}
>  		if (sysfs_fd_get_ll(fd, &completed) < 0) {
>  			dprintf("cannot read reshape_position (in loop)\n");
>  			close(fd);
> -- 

Applied, thanks.

NeilBrown

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Re: [PATCH 1/2] Grow: close file descriptor earlier to avoid "still in use" when stopping

[NeilBrown]

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On Wed, Dec 23 2015, Artur Paszkiewicz wrote:

> Close fd2 as soon as it is no longer needed, before calling
> Grow_continue(). Otherwise, we won't be able to stop an array with
> external metadata during reshape, because mdadm running in background
> will be keeping it open.
>
> Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
> Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
> ---
>  Grow.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Grow.c b/Grow.c
> index 80d7b22..f65b36a 100644
> --- a/Grow.c
> +++ b/Grow.c
> @@ -4873,6 +4873,9 @@ int Grow_continue_command(char *devname, int fd,
>  
>  		sysfs_init(content, fd2, mdstat->devnm);
>  
> +		close(fd2);
> +		fd2 = -1;
> +
>  		/* start mdmon in case it is not running
>  		 */
>  		if (!mdmon_running(container))

applied, thanks.

NeilBrown

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