Improve size handling during volume add/resize
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c1782c5004
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@ -73,6 +73,11 @@ byte_unit_matrix = {
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"G": 1024 * 1024 * 1024,
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"T": 1024 * 1024 * 1024 * 1024,
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"P": 1024 * 1024 * 1024 * 1024 * 1024,
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"E": 1024 * 1024 * 1024 * 1024 * 1024 * 1024,
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"Z": 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024,
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"Y": 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024,
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"R": 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024,
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"Q": 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024,
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}
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# Matrix of human-to-metric values
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@ -83,6 +88,11 @@ ops_unit_matrix = {
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"G": 1000 * 1000 * 1000,
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"T": 1000 * 1000 * 1000 * 1000,
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"P": 1000 * 1000 * 1000 * 1000 * 1000,
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"E": 1000 * 1000 * 1000 * 1000 * 1000 * 1000,
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"Z": 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000,
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"Y": 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000,
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"R": 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000,
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"Q": 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000 * 1000,
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}
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@ -103,14 +113,18 @@ def format_bytes_tohuman(databytes):
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def format_bytes_fromhuman(datahuman):
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# Trim off human-readable character
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dataunit = str(datahuman)[-1]
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datasize = int(str(datahuman)[:-1])
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if not re.match(r"[A-Z]", dataunit):
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if not re.search(r"[A-Za-z]+", datahuman):
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dataunit = "B"
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datasize = int(datahuman)
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databytes = datasize * byte_unit_matrix[dataunit]
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return databytes
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else:
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dataunit = str(re.match(r"[0-9]+([A-Za-z])[iBb]*", datahuman).group(1))
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datasize = int(re.match(r"([0-9]+)[A-Za-z]+", datahuman).group(1))
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if byte_unit_matrix.get(dataunit):
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databytes = datasize * byte_unit_matrix[dataunit]
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return databytes
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else:
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return None
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# Format ops sizes to/from human-readable units
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@ -731,22 +745,26 @@ def getVolumeInformation(zkhandler, pool, volume):
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def add_volume(zkhandler, pool, name, size):
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# Add 'B' if the volume is in bytes
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if re.match(r"^[0-9]+$", size):
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size = "{}B".format(size)
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# 1. Verify the size of the volume
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pool_information = getPoolInformation(zkhandler, pool)
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size_bytes = format_bytes_fromhuman(size)
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if size_bytes is None:
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return (
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False,
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f"ERROR: Requested volume size '{size}' does not have a valid SI unit",
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)
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if size_bytes >= int(pool_information["stats"]["free_bytes"]):
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return (
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False,
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"ERROR: Requested volume size is greater than the available free space in the pool",
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f"ERROR: Requested volume size '{format_bytes_tohuman(size_bytes)}' is greater than the available free space in the pool ('{format_bytes_tohuman(pool_information['stats']['free_bytes'])}')",
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)
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# 2. Create the volume
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retcode, stdout, stderr = common.run_os_command(
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"rbd create --size {} {}/{}".format(size, pool, name)
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"rbd create --size {} {}/{}".format(
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format_bytes_tohuman(size_bytes), pool, name
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)
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)
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if retcode:
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return False, 'ERROR: Failed to create RBD volume "{}": {}'.format(name, stderr)
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@ -766,7 +784,9 @@ def add_volume(zkhandler, pool, name, size):
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]
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)
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return True, 'Created RBD volume "{}/{}" ({}).'.format(pool, name, size)
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return True, 'Created RBD volume "{}" of size "{}" in pool "{}".'.format(
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name, format_bytes_tohuman(size_bytes), pool
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)
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def clone_volume(zkhandler, pool, name_src, name_new):
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@ -813,28 +833,32 @@ def resize_volume(zkhandler, pool, name, size):
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name, pool
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)
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# Add 'B' if the volume is in bytes
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if re.match(r"^[0-9]+$", size):
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size = "{}B".format(size)
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# 1. Verify the size of the volume
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pool_information = getPoolInformation(zkhandler, pool)
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size_bytes = format_bytes_fromhuman(size)
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if size_bytes is None:
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return (
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False,
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f"ERROR: Requested volume size '{size}' does not have a valid SI unit",
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)
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if size_bytes >= int(pool_information["stats"]["free_bytes"]):
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return (
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False,
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"ERROR: Requested volume size is greater than the available free space in the pool",
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f"ERROR: Requested volume size '{format_bytes_tohuman(size_bytes)}' is greater than the available free space in the pool ('{format_bytes_tohuman(pool_information['stats']['free_bytes'])}')",
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)
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# 2. Resize the volume
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retcode, stdout, stderr = common.run_os_command(
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"rbd resize --size {} {}/{}".format(size, pool, name)
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"rbd resize --size {} {}/{}".format(
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format_bytes_tohuman(size_bytes), pool, name
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)
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)
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if retcode:
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return (
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False,
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'ERROR: Failed to resize RBD volume "{}" to size "{}" in pool "{}": {}'.format(
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name, size, pool, stderr
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name, format_bytes_tohuman(size_bytes), pool, stderr
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),
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)
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@ -860,7 +884,7 @@ def resize_volume(zkhandler, pool, name, size):
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if target_vm_conn:
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target_vm_conn.blockResize(
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volume_id,
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format_bytes_fromhuman(size),
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size_bytes,
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libvirt.VIR_DOMAIN_BLOCK_RESIZE_BYTES,
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)
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target_lv_conn.close()
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@ -883,7 +907,7 @@ def resize_volume(zkhandler, pool, name, size):
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)
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return True, 'Resized RBD volume "{}" to size "{}" in pool "{}".'.format(
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name, size, pool
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name, format_bytes_tohuman(size_bytes), pool
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)
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