299 lines
12 KiB
Python
299 lines
12 KiB
Python
# -*- 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 : disk.py is a utility to do something for disk.
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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 gspylib.common.ErrorCode import ErrorCode
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from gspylib.os.gsplatform import g_Platform
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"""
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Requirements:
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1. getUsageSize(directory) -> get directory or file real size. Unit is byte.
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2. getMountPathByDataDir(directory) -> get the input directory of the mount
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disk
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3. getMountPathAvailSize(directory) -> get the avail size about the input
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directory of the mount disk. Unit MB
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4. getDiskSpaceUsage(directory) -> get directory or file space size. Unit is
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byte.
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5. getDiskInodeUsage(directory) -> get directory or file inode uage. Unit is
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byte.
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6. getDiskMountType(directory) -> get the type about the input directory of
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the mount disk.
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7. getDiskReadWritespeed(inputFile, outputFile, bs, count, iflag = '',
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oflag = '') -> get disk read/write speed
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"""
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class diskInfo():
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"""
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function: Init the DiskUsage options
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"""
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def __init__(self):
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self.mtabFile = g_Platform.getMtablFile()
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def getMountInfo(self, allInfo=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(allInfo)
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def getUsageSize(self, 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:
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cmd = "%s -l -R %s | %s ^- | %s '{t+=$5;} END {print t}'" % (
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g_Platform.getListCmd(), directory, g_Platform.getGrepCmd(),
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g_Platform.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
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+ " Error: \n%s" % str(output))
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd)
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# Mtab always keeps the partition information already mounted in the
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# current system.
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# For programs like fdisk and df,
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# you must read the mtab file to get the partition mounting status in
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# the current system.
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def getMountPathByDataDir(self, datadir):
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"""
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function : Get the disk by the file path
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input : datadir the file path
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output : device disk
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"""
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device = ""
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mountDisk = {}
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if not os.path.exists(datadir):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % datadir)
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try:
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datadir = os.path.realpath(datadir)
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with open(self.mtabFile, "r") as fp:
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for line in fp.readlines():
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if line.startswith('none'):
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continue
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i_fields = line.split()
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if len(i_fields) < 3:
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continue
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i_device = i_fields[0].strip()
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i_mountpoint = i_fields[1].strip()
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mountDisk[i_mountpoint] = [i_device, i_mountpoint]
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mountList = mountDisk.keys()
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sortedMountList = sorted(mountList, reverse=True)
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for mount in sortedMountList:
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i_mountpoint = mountDisk[mount][1]
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if (i_mountpoint == '/'):
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i_mount_dirlst = ['']
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else:
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i_mount_dirlst = i_mountpoint.split('/')
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data_dirlst = datadir.split('/')
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if len(i_mount_dirlst) > len(data_dirlst):
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continue
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if (i_mount_dirlst == data_dirlst[:len(i_mount_dirlst)]):
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device = mountDisk[mount][0]
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break
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] +
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" disk mount." + "Error: %s" % str(e))
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return device
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# Mtab always keeps the partition information already mounted in the
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# current system.
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# For programs like fdisk and df,
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# you must read the mtab file to get the partition mounting status in
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# the current system.
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def getMountPathAvailSize(self, device, sizeUnit='MB'):
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"""
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function : Get the disk size by the file path
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input : device the file path
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: sizeUnit byte, GB, MB, KB
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output : total disk size
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"""
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if (not os.path.exists(device)):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % device)
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try:
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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 // (
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1024 * 1024 * 1024)
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elif (sizeUnit == 'MB'):
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total = dev_info.f_bavail * dev_info.f_frsize // (1024 * 1024)
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elif (sizeUnit == 'KB'):
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total = dev_info.f_bavail * dev_info.f_frsize // 1024
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else:
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total = dev_info.f_bavail * dev_info.f_frsize
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] + " disk size."
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+ "Error: %s" % str(e))
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return total
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# Mtab always keeps the partition information already mounted in the
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# current system.
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# For programs like fdisk and df,
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# you must read the mtab file to get the partition mounting status in
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# the current system.
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def getDiskSpaceUsage(self, path):
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"""
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function : Get the disk usage by the file path
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method of calculation:
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Total capacity (KB)=f_bsize*f_blocks/1024 [1k-blocks]
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Usage (KB)= f_bsize*(f_blocks-f_bfree)/1024 [Used]
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Valid capacity (KB) = f_bsize*f_bavail/1024 [Available]
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Usage (%) = Usage/(Usage + Valid capacity) *100 [Use%]
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input : path the file path
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output : percent
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"""
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percent = 0
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if (not os.path.exists(path)):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % path)
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try:
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dev_info = os.statvfs(path)
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used = dev_info.f_blocks - dev_info.f_bfree
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valueable = dev_info.f_bavail + used
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percent = math.ceil((float(used) / valueable) * 100)
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] + " disk space."
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+ "Error: %s" % str(e))
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return float(percent)
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def getDiskSpaceForShrink(self, path, delta):
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"""
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function : Get the disk usage by the file path for Shrink
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input : path the file path and deltasize
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output : percent
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"""
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percent = 0
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if (not os.path.exists(path)):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % path)
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try:
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dev_info = os.statvfs(path)
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used = (dev_info.f_blocks - dev_info.f_bfree) * dev_info.f_bsize
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valueable = dev_info.f_bavail * dev_info.f_bsize + used + delta
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percent = math.ceil((float(used) // valueable) * 100)
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] + " disk space."
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+ "Error: %s" % str(e))
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return float(percent)
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def getDiskInodeUsage(self, Path):
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"""
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function : Get the inode by the file path
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input : Path the file path
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output : percent
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"""
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percent = 0
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if (not os.path.exists(Path)):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % Path)
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try:
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dev_info = os.statvfs(Path)
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used = dev_info.f_files - dev_info.f_ffree
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valueable = dev_info.f_favail + used
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percent = math.ceil((float(used) // valueable) * 100)
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] + " disk Inode."
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+ "Error: %s" % str(e))
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return float(percent)
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def getDiskMountType(self, device):
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"""
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function : Get the mount type by device
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input : device eg:/dev/pts
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output : fstype device type
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"""
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fstype = ""
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try:
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with open(self.mtabFile, "r") as fp:
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for line in fp.readlines():
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if line.startswith('#'):
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continue
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i_fields = line.split()
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if len(i_fields) < 3:
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continue
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i_device = i_fields[0].strip()
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i_fstype = i_fields[2].strip()
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if i_device == device:
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fstype = i_fstype
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break
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except Exception as e:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"]
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+ " disk mount type." + "Error: %s" % str(e))
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return fstype
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def getDiskReadWritespeed(self, inputFile, outputFile, bs, count, iflag='',
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oflag=''):
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"""
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function : Get the disk read or write rate
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input : inputFile
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: outputFile
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: bs
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: count
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: iflag
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: oflag
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output : speed
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"""
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try:
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cmd = "%s if=%s of=%s bs=%s count=%s " % (
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g_Platform.getDdCmd(), inputFile, outputFile, bs, count)
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if iflag:
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cmd += "iflag=%s " % iflag
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if oflag:
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cmd += "oflag=%s " % oflag
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(status, output) = subprocess.getstatusoutput(cmd)
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if (status == 0):
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output = output.split("\n")
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resultInfolist = output[2].strip().split(",")
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if ((resultInfolist[2]).split()[1] == "KB/s"):
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speed = float((resultInfolist[2]).split()[0]) * 1024
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elif ((resultInfolist[2]).split()[1] == "MB/s"):
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speed = float((resultInfolist[2]).split()[0]) * 1024 * 1024
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elif ((resultInfolist[2]).split()[1] == "GB/s"):
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speed = float(
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(resultInfolist[2]).split()[0]) * 1024 * 1024 * 1024
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elif ((resultInfolist[2]).split()[1] == "TB/s"):
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speed = float((resultInfolist[2]).split()[
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0]) * 1024 * 1024 * 1024 * 1024
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else:
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speed = float((resultInfolist[2]).split()[0])
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return speed
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else:
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raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd
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+ " Error: \n%s" % str(output))
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except Exception as e:
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raise Exception(
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ErrorCode.GAUSS_504["GAUSS_50406"] + "Error:\n%s" % str(e))
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g_disk = diskInfo()
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