diff mbox

[2/6] fstests: btrfs: add functions to get and put a device for replace target

Message ID 1463495530-425-2-git-send-email-anand.jain@oracle.com (mailing list archive)
State New, archived
Headers show

Commit Message

Anand Jain May 17, 2016, 2:32 p.m. UTC
For the replace tests we need a device as a spare device,
here functions _spare_dev_get() and _spare_dev_put()
will get it from the SCRATCH_DEV_POOL_SAVED, which is set
when _scratch_dev_pool_get() is called, and is based on how
many has already been assigned to SCRATCH_DEV_POOL.

 usage:
   _scratch_dev_pool_get 3
   _spare_dev_get

      SPARE_DEV will have a device set which can be
      used as the replace target device.

   _spare_dev_put
   _scratch_dev_pool_put

_spare_dev_get() will pick the next device after SCRATCH_DEV_POOL
devices, from the SCRATCH_DEV_POOL_SAVED, and assigns it to
SPARE_DEV. _spare_dev_put() will set to SPARE_DEV to null.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 common/rc | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Comments

Eryu Guan June 12, 2016, 4:42 a.m. UTC | #1
On Tue, May 17, 2016 at 10:32:06PM +0800, Anand Jain wrote:
> For the replace tests we need a device as a spare device,
> here functions _spare_dev_get() and _spare_dev_put()
> will get it from the SCRATCH_DEV_POOL_SAVED, which is set
> when _scratch_dev_pool_get() is called, and is based on how
> many has already been assigned to SCRATCH_DEV_POOL.
> 
>  usage:
>    _scratch_dev_pool_get 3
>    _spare_dev_get
> 
>       SPARE_DEV will have a device set which can be
>       used as the replace target device.
> 
>    _spare_dev_put
>    _scratch_dev_pool_put
> 
> _spare_dev_get() will pick the next device after SCRATCH_DEV_POOL
> devices, from the SCRATCH_DEV_POOL_SAVED, and assigns it to
> SPARE_DEV. _spare_dev_put() will set to SPARE_DEV to null.
> 
> Signed-off-by: Anand Jain <anand.jain@oracle.com>
> ---
>  common/rc | 45 +++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
> 
> diff --git a/common/rc b/common/rc
> index 33632fd8e4a3..f2b39ddbee0c 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -786,6 +786,51 @@ _scratch_mkfs()
>      esac
>  }
>  
> +_spare_dev_get()

I'd like to see some comments about these helpers in the code. Otherwise
look good to me.

Thanks,
Eryu

> +{
> +	typeset -p SCRATCH_DEV_POOL_SAVED >/dev/null 2>&1
> +	if [ $? != 0 ]; then
> +		_fail "Bug: unset val, must call _scratch_dev_pool_get before _spare_dev_get"
> +	fi
> +
> +	if [ -z "$SCRATCH_DEV_POOL_SAVED" ]; then
> +		_fail "Bug: str empty, must call _scratch_dev_pool_get before _spare_dev_get"
> +	fi
> +
> +	# Check if the spare is already assigned
> +	typeset -p SPARE_DEV >/dev/null 2>&1
> +	if [ $? == 0 ]; then
> +		if [ ! -z "$SPARE_DEV" ]; then
> +			_fail "Bug: SPARE_DEV = $SPARE_DEV already assigned"
> +		fi
> +	fi
> +
> +	local ndevs=`echo $SCRATCH_DEV_POOL| wc -w`
> +	local config_ndevs=`echo $SCRATCH_DEV_POOL_SAVED| wc -w`
> +
> +	if [ $ndevs -eq $config_ndevs ]; then
> +		_notrun "All devs used no spare"
> +	fi
> +	# Get a dev that is not used
> +	local devs[]="( $SCRATCH_DEV_POOL_SAVED )"
> +	SPARE_DEV=${devs[@]:$ndevs:1}
> +	export SPARE_DEV
> +}
> +
> +_spare_dev_put()
> +{
> +	typeset -p SPARE_DEV >/dev/null 2>&1
> +	if [ $? != 0 ]; then
> +		_fail "Bug: unset val, must call _spare_dev_get before its put"
> +	fi
> +
> +	if [ -z "$SPARE_DEV" ]; then
> +		_fail "Bug: str empty, must call _spare_dev_get before its put"
> +	fi
> +
> +	export SPARE_DEV=""
> +}
> +
>  #
>  # $1 Number of the scratch devs required
>  #
> -- 
> 2.7.0
> 
> --
> To unsubscribe from this list: send the line "unsubscribe fstests" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe fstests" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Anand Jain June 15, 2016, 8:45 a.m. UTC | #2
On 06/12/2016 12:42 PM, Eryu Guan wrote:
> On Tue, May 17, 2016 at 10:32:06PM +0800, Anand Jain wrote:
>> For the replace tests we need a device as a spare device,
>> here functions _spare_dev_get() and _spare_dev_put()
>> will get it from the SCRATCH_DEV_POOL_SAVED, which is set
>> when _scratch_dev_pool_get() is called, and is based on how
>> many has already been assigned to SCRATCH_DEV_POOL.
>>
>>  usage:
>>    _scratch_dev_pool_get 3
>>    _spare_dev_get
>>
>>       SPARE_DEV will have a device set which can be
>>       used as the replace target device.
>>
>>    _spare_dev_put
>>    _scratch_dev_pool_put
>>
>> _spare_dev_get() will pick the next device after SCRATCH_DEV_POOL
>> devices, from the SCRATCH_DEV_POOL_SAVED, and assigns it to
>> SPARE_DEV. _spare_dev_put() will set to SPARE_DEV to null.
>>
>> Signed-off-by: Anand Jain <anand.jain@oracle.com>
>> ---
>>  common/rc | 45 +++++++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 45 insertions(+)
>>
>> diff --git a/common/rc b/common/rc
>> index 33632fd8e4a3..f2b39ddbee0c 100644
>> --- a/common/rc
>> +++ b/common/rc
>> @@ -786,6 +786,51 @@ _scratch_mkfs()
>>      esac
>>  }
>>
>> +_spare_dev_get()
>
> I'd like to see some comments about these helpers in the code. Otherwise
> look good to me.

  Added in v2. Thanks Anand


> Thanks,
> Eryu
>
>> +{
>> +	typeset -p SCRATCH_DEV_POOL_SAVED >/dev/null 2>&1
>> +	if [ $? != 0 ]; then
>> +		_fail "Bug: unset val, must call _scratch_dev_pool_get before _spare_dev_get"
>> +	fi
>> +
>> +	if [ -z "$SCRATCH_DEV_POOL_SAVED" ]; then
>> +		_fail "Bug: str empty, must call _scratch_dev_pool_get before _spare_dev_get"
>> +	fi
>> +
>> +	# Check if the spare is already assigned
>> +	typeset -p SPARE_DEV >/dev/null 2>&1
>> +	if [ $? == 0 ]; then
>> +		if [ ! -z "$SPARE_DEV" ]; then
>> +			_fail "Bug: SPARE_DEV = $SPARE_DEV already assigned"
>> +		fi
>> +	fi
>> +
>> +	local ndevs=`echo $SCRATCH_DEV_POOL| wc -w`
>> +	local config_ndevs=`echo $SCRATCH_DEV_POOL_SAVED| wc -w`
>> +
>> +	if [ $ndevs -eq $config_ndevs ]; then
>> +		_notrun "All devs used no spare"
>> +	fi
>> +	# Get a dev that is not used
>> +	local devs[]="( $SCRATCH_DEV_POOL_SAVED )"
>> +	SPARE_DEV=${devs[@]:$ndevs:1}
>> +	export SPARE_DEV
>> +}
>> +
>> +_spare_dev_put()
>> +{
>> +	typeset -p SPARE_DEV >/dev/null 2>&1
>> +	if [ $? != 0 ]; then
>> +		_fail "Bug: unset val, must call _spare_dev_get before its put"
>> +	fi
>> +
>> +	if [ -z "$SPARE_DEV" ]; then
>> +		_fail "Bug: str empty, must call _spare_dev_get before its put"
>> +	fi
>> +
>> +	export SPARE_DEV=""
>> +}
>> +
>>  #
>>  # $1 Number of the scratch devs required
>>  #
>> --
>> 2.7.0
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe fstests" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe fstests" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/common/rc b/common/rc
index 33632fd8e4a3..f2b39ddbee0c 100644
--- a/common/rc
+++ b/common/rc
@@ -786,6 +786,51 @@  _scratch_mkfs()
     esac
 }
 
+_spare_dev_get()
+{
+	typeset -p SCRATCH_DEV_POOL_SAVED >/dev/null 2>&1
+	if [ $? != 0 ]; then
+		_fail "Bug: unset val, must call _scratch_dev_pool_get before _spare_dev_get"
+	fi
+
+	if [ -z "$SCRATCH_DEV_POOL_SAVED" ]; then
+		_fail "Bug: str empty, must call _scratch_dev_pool_get before _spare_dev_get"
+	fi
+
+	# Check if the spare is already assigned
+	typeset -p SPARE_DEV >/dev/null 2>&1
+	if [ $? == 0 ]; then
+		if [ ! -z "$SPARE_DEV" ]; then
+			_fail "Bug: SPARE_DEV = $SPARE_DEV already assigned"
+		fi
+	fi
+
+	local ndevs=`echo $SCRATCH_DEV_POOL| wc -w`
+	local config_ndevs=`echo $SCRATCH_DEV_POOL_SAVED| wc -w`
+
+	if [ $ndevs -eq $config_ndevs ]; then
+		_notrun "All devs used no spare"
+	fi
+	# Get a dev that is not used
+	local devs[]="( $SCRATCH_DEV_POOL_SAVED )"
+	SPARE_DEV=${devs[@]:$ndevs:1}
+	export SPARE_DEV
+}
+
+_spare_dev_put()
+{
+	typeset -p SPARE_DEV >/dev/null 2>&1
+	if [ $? != 0 ]; then
+		_fail "Bug: unset val, must call _spare_dev_get before its put"
+	fi
+
+	if [ -z "$SPARE_DEV" ]; then
+		_fail "Bug: str empty, must call _spare_dev_get before its put"
+	fi
+
+	export SPARE_DEV=""
+}
+
 #
 # $1 Number of the scratch devs required
 #