coolany
256
script/base_utils/os/disk_util.py
Normal file
256
script/base_utils/os/disk_util.py
Normal file
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# -*- coding:utf-8 -*-
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#############################################################################
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# Copyright (c) 2020 Huawei Technologies Co.,Ltd.
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#
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# openGauss is licensed under Mulan PSL v2.
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# You can use this software according to the terms
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# and conditions of the Mulan PSL v2.
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# You may obtain a copy of Mulan PSL v2 at:
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||||
#
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# http://license.coscl.org.cn/MulanPSL2
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#
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# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OF ANY KIND,
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# EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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# MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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# See the Mulan PSL v2 for more details.
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# ----------------------------------------------------------------------------
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# Description :
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#############################################################################
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import os
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import subprocess
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import sys
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import psutil
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import math
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sys.path.append(sys.path[0] + "/../../")
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from base_utils.os.cmd_util import CmdUtil
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from gspylib.common.ErrorCode import ErrorCode
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class DiskUtil(object):
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"""
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function: Init the DiskUsage options
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||||
"""
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MTAB_FILE = "/etc/mtab"
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@staticmethod
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def getMountInfo(all_info=False):
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"""
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get mount disk information: device mountpoint fstype opts
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input: bool (physical devices and all others)
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output: list
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"""
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return psutil.disk_partitions(all_info)
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||||
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||||
@staticmethod
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||||
def getUsageSize(directory):
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||||
"""
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||||
get directory or file real size. Unit is byte
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||||
"""
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||||
cmd = ""
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||||
try:
|
||||
cmd = "%s -l -R %s | %s ^- | %s '{t+=$5;} END {print t}'" % (
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||||
CmdUtil.getListCmd(), directory, CmdUtil.getGrepCmd(),
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CmdUtil.getAwkCmd())
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(status, output) = subprocess.getstatusoutput(cmd)
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||||
if status == 0:
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||||
return output.split('\t')[0].strip()
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||||
else:
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||||
raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd
|
||||
+ " Error: \n%s" % str(output))
|
||||
except Exception:
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||||
raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd)
|
||||
|
||||
# Mtab always keeps the partition information already mounted in the
|
||||
# current system.
|
||||
# For programs like fdisk and df,
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||||
# you must read the mtab file to get the partition mounting status in
|
||||
# the current system.
|
||||
@staticmethod
|
||||
def getMountPathByDataDir(data_dir):
|
||||
"""
|
||||
function : Get the disk by the file path
|
||||
input : datadir the file path
|
||||
output : device disk
|
||||
"""
|
||||
device = ""
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||||
mount_disk = {}
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||||
if not os.path.exists(data_dir):
|
||||
raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % data_dir)
|
||||
try:
|
||||
datadir = os.path.realpath(data_dir)
|
||||
with open(DiskUtil.MTAB_FILE, "r") as fp:
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||||
for line in fp.readlines():
|
||||
if line.startswith('none'):
|
||||
continue
|
||||
i_fields = line.split()
|
||||
if len(i_fields) < 3:
|
||||
continue
|
||||
i_device = i_fields[0].strip()
|
||||
i_mountpoint = i_fields[1].strip()
|
||||
mount_disk[i_mountpoint] = [i_device, i_mountpoint]
|
||||
|
||||
mountList = list(mount_disk.keys())
|
||||
mountList.sort(reverse=True)
|
||||
for mount in mountList:
|
||||
i_mountpoint = mount_disk[mount][1]
|
||||
if i_mountpoint == '/':
|
||||
i_mount_dirlst = ['']
|
||||
else:
|
||||
i_mount_dirlst = i_mountpoint.split('/')
|
||||
data_dirlst = datadir.split('/')
|
||||
if len(i_mount_dirlst) > len(data_dirlst):
|
||||
continue
|
||||
if i_mount_dirlst == data_dirlst[:len(i_mount_dirlst)]:
|
||||
device = mount_disk[mount][0]
|
||||
break
|
||||
|
||||
except Exception as excep:
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||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] %
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||||
" disk mount." + "Error: %s" % str(excep))
|
||||
return device
|
||||
|
||||
# Mtab always keeps the partition information already mounted in the
|
||||
# current system.
|
||||
# For programs like fdisk and df,
|
||||
# you must read the mtab file to get the partition mounting status in
|
||||
# the current system.
|
||||
@staticmethod
|
||||
def getMountPathAvailSize(device, sizeUnit='MB'):
|
||||
"""
|
||||
function : Get the disk size by the file path
|
||||
input : device the file path
|
||||
: sizeUnit byte, GB, MB, KB
|
||||
output : total disk size
|
||||
"""
|
||||
total = 0
|
||||
if not os.path.exists(device):
|
||||
raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % device)
|
||||
try:
|
||||
dev_info = os.statvfs(device)
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||||
if sizeUnit == 'GB':
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||||
total = dev_info.f_bavail * dev_info.f_frsize // (
|
||||
1024 * 1024 * 1024)
|
||||
elif sizeUnit == 'MB':
|
||||
total = dev_info.f_bavail * dev_info.f_frsize // (1024 * 1024)
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||||
elif sizeUnit == 'KB':
|
||||
total = dev_info.f_bavail * dev_info.f_frsize // 1024
|
||||
else:
|
||||
total = dev_info.f_bavail * dev_info.f_frsize
|
||||
except Exception as excep:
|
||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk size."
|
||||
+ "Error: %s" % str(excep))
|
||||
return total
|
||||
|
||||
# Mtab always keeps the partition information already mounted in the
|
||||
# current system.
|
||||
# For programs like fdisk and df,
|
||||
# you must read the mtab file to get the partition mounting status in
|
||||
# the current system.
|
||||
@staticmethod
|
||||
def getDiskSpaceUsage(path):
|
||||
"""
|
||||
function : Get the disk usage by the file path
|
||||
method of calculation:
|
||||
Total capacity (KB)=f_bsize*f_blocks/1024 [1k-blocks]
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||||
Usage (KB)= f_bsize*(f_blocks-f_bfree)/1024 [Used]
|
||||
Valid capacity (KB) = f_bsize*f_bavail/1024 [Available]
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||||
Usage (%) = Usage/(Usage + Valid capacity) *100 [Use%]
|
||||
input : path the file path
|
||||
output : percent
|
||||
"""
|
||||
percent = 0
|
||||
if not os.path.exists(path):
|
||||
raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % path)
|
||||
try:
|
||||
dev_info = os.statvfs(path)
|
||||
used = dev_info.f_blocks - dev_info.f_bfree
|
||||
valueable = dev_info.f_bavail + used
|
||||
percent = math.ceil((float(used) / valueable) * 100)
|
||||
except Exception as excep:
|
||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk space."
|
||||
+ "Error: %s" % str(excep))
|
||||
return float(percent)
|
||||
|
||||
@staticmethod
|
||||
def getDiskSpaceForShrink(path, delta):
|
||||
"""
|
||||
function : Get the disk usage by the file path for Shrink
|
||||
input : path the file path and deltasize
|
||||
output : percent
|
||||
"""
|
||||
percent = 0
|
||||
if not os.path.exists(path):
|
||||
raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % path)
|
||||
try:
|
||||
dev_info = os.statvfs(path)
|
||||
used = (dev_info.f_blocks - dev_info.f_bfree) * dev_info.f_bsize
|
||||
valueable = dev_info.f_bavail * dev_info.f_bsize + used + delta
|
||||
percent = math.ceil((float(used) / valueable) * 100)
|
||||
except Exception as excep:
|
||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk space."
|
||||
+ "Error: %s" % str(excep))
|
||||
return float(percent)
|
||||
|
||||
@staticmethod
|
||||
def getDiskInodeUsage(Path):
|
||||
"""
|
||||
function : Get the inode by the file path
|
||||
input : Path the file path
|
||||
output : percent
|
||||
"""
|
||||
percent = 0
|
||||
if not os.path.exists(Path):
|
||||
raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % Path)
|
||||
try:
|
||||
dev_info = os.statvfs(Path)
|
||||
used = dev_info.f_files - dev_info.f_ffree
|
||||
valueable = dev_info.f_favail + used
|
||||
percent = math.ceil((float(used) / valueable) * 100)
|
||||
except Exception as excep:
|
||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk Inode."
|
||||
+ "Error: %s" % str(excep))
|
||||
return float(percent)
|
||||
|
||||
@staticmethod
|
||||
def getDiskMountType(device):
|
||||
"""
|
||||
function : Get the mount type by device
|
||||
input : device eg:/dev/pts
|
||||
output : fstype device type
|
||||
"""
|
||||
fstype = ""
|
||||
try:
|
||||
with open(DiskUtil.MTAB_FILE, "r") as fp:
|
||||
for line in fp.readlines():
|
||||
if line.startswith('#'):
|
||||
continue
|
||||
i_fields = line.split()
|
||||
if len(i_fields) < 3:
|
||||
continue
|
||||
i_device = i_fields[0].strip()
|
||||
i_fstype = i_fields[2].strip()
|
||||
if i_device == device:
|
||||
fstype = i_fstype
|
||||
break
|
||||
except Exception as excep:
|
||||
raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] %
|
||||
" disk mount type." + "Error: %s" % str(excep))
|
||||
return fstype
|
||||
|
||||
@staticmethod
|
||||
def getDevices():
|
||||
"""
|
||||
functino: get device
|
||||
input: NA
|
||||
output: NA
|
||||
"""
|
||||
cmd = "fdisk -l 2>/dev/null | grep \"Disk /dev/\" | " \
|
||||
"grep -Ev \"/dev/mapper/|loop\" | awk '{ print $2 }' | " \
|
||||
"awk -F'/' '{ print $NF }' | sed s/:$//g"
|
||||
(status, output) = subprocess.getstatusoutput(cmd)
|
||||
if status != 0:
|
||||
raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd + " Error: \n%s" % output)
|
||||
return output.split('\n')
|
||||
Reference in New Issue
Block a user