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-   -   rgmanager: Treat exit status 16 from umount as success (http://www.linux-archive.org/cluster-development/678275-rgmanager-treat-exit-status-16-umount-success.html)

Masatake YAMATO 06-28-2012 08:59 PM

rgmanager: Treat exit status 16 from umount as success
 
Hi,

> When the filesystem /etc lives on is completely full, umount will exit
> with exit status 16 if the umount syscall succeeded but it was unable to write
> a new mtab file because the disk is full. umount won't exit with status 16
> under any other circumstances.
>
> This patch changes the fs.sh, clusterfs.sh, and netfs.sh resource agents
> to check treat both exit status 0 and exit status 16 as success.
>
> Resolves: rhbz#819595

I'm afraid of forgetting the meaning of 16 when I have to read this
code as part of my job. git may help me but repository will be moved
to somewhere in such case:-P

How do you think do like:

readonly fail_to_update_mtab=16
...
if [ $retval -eq 0 -o $retval -eq ${fail_to_update_mtab} ]; then

Masatake YAMATO


> Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
> ---
> rgmanager/src/resources/clusterfs.sh | 3 ++-
> rgmanager/src/resources/fs.sh | 3 ++-
> rgmanager/src/resources/netfs.sh | 3 ++-
> 3 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/rgmanager/src/resources/clusterfs.sh b/rgmanager/src/resources/clusterfs.sh
> index 49eb724..eae1ee0 100755
> --- a/rgmanager/src/resources/clusterfs.sh
> +++ b/rgmanager/src/resources/clusterfs.sh
> @@ -793,7 +793,8 @@ stop: Could not match $OCF_RESKEY_device with a real device"
> ocf_log info "unmounting $dev ($mp)"
>
> umount $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
> diff --git a/rgmanager/src/resources/fs.sh b/rgmanager/src/resources/fs.sh
> index a98cddc..5d6bc1b 100755
> --- a/rgmanager/src/resources/fs.sh
> +++ b/rgmanager/src/resources/fs.sh
> @@ -1103,7 +1103,8 @@ stop: Could not match $OCF_RESKEY_device with a real device"
>
> ocf_log info "unmounting $mp"
> umount $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
> diff --git a/rgmanager/src/resources/netfs.sh b/rgmanager/src/resources/netfs.sh
> index 837a4c4..9f0daa4 100755
> --- a/rgmanager/src/resources/netfs.sh
> +++ b/rgmanager/src/resources/netfs.sh
> @@ -560,7 +560,8 @@ stopNFSFilesystem() {
> ocf_log info "unmounting $mp"
>
> umount $umount_flag $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
> --
> 1.7.10.2
>

"Fabio M. Di Nitto" 07-04-2012 11:08 AM

rgmanager: Treat exit status 16 from umount as success
 
ACK, but please add Masatake YAMATO suggestion to the final patch.

Fabio

On 6/28/2012 9:57 PM, Ryan McCabe wrote:
> When the filesystem /etc lives on is completely full, umount will exit
> with exit status 16 if the umount syscall succeeded but it was unable to write
> a new mtab file because the disk is full. umount won't exit with status 16
> under any other circumstances.
>
> This patch changes the fs.sh, clusterfs.sh, and netfs.sh resource agents
> to check treat both exit status 0 and exit status 16 as success.
>
> Resolves: rhbz#819595
>
> Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
> ---
> rgmanager/src/resources/clusterfs.sh | 3 ++-
> rgmanager/src/resources/fs.sh | 3 ++-
> rgmanager/src/resources/netfs.sh | 3 ++-
> 3 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/rgmanager/src/resources/clusterfs.sh b/rgmanager/src/resources/clusterfs.sh
> index 49eb724..eae1ee0 100755
> --- a/rgmanager/src/resources/clusterfs.sh
> +++ b/rgmanager/src/resources/clusterfs.sh
> @@ -793,7 +793,8 @@ stop: Could not match $OCF_RESKEY_device with a real device"
> ocf_log info "unmounting $dev ($mp)"
>
> umount $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
> diff --git a/rgmanager/src/resources/fs.sh b/rgmanager/src/resources/fs.sh
> index a98cddc..5d6bc1b 100755
> --- a/rgmanager/src/resources/fs.sh
> +++ b/rgmanager/src/resources/fs.sh
> @@ -1103,7 +1103,8 @@ stop: Could not match $OCF_RESKEY_device with a real device"
>
> ocf_log info "unmounting $mp"
> umount $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
> diff --git a/rgmanager/src/resources/netfs.sh b/rgmanager/src/resources/netfs.sh
> index 837a4c4..9f0daa4 100755
> --- a/rgmanager/src/resources/netfs.sh
> +++ b/rgmanager/src/resources/netfs.sh
> @@ -560,7 +560,8 @@ stopNFSFilesystem() {
> ocf_log info "unmounting $mp"
>
> umount $umount_flag $mp
> - if [ $? -eq 0 ]; then
> + retval=$?
> + if [ $retval -eq 0 -o $retval -eq 16 ]; then
> umount_failed=
> done=$YES
> continue
>


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