319 lines
12 KiB
Python
319 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 :
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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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@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:
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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
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+ " Error: \n%s" % str(output))
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except Exception:
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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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@staticmethod
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def getMountPathByDataDir(data_dir):
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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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mount_disk = {}
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if not os.path.exists(data_dir):
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raise Exception(ErrorCode.GAUSS_502["GAUSS_50228"] % data_dir)
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try:
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datadir = os.path.realpath(data_dir)
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with open(DiskUtil.MTAB_FILE, "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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mount_disk[i_mountpoint] = [i_device, i_mountpoint]
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mountList = list(mount_disk.keys())
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mountList.sort(reverse=True)
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for mount in mountList:
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i_mountpoint = mount_disk[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 = mount_disk[mount][0]
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break
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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))
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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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@staticmethod
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def getMountPathAvailSize(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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total = 0
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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 excep:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk size."
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+ "Error: %s" % str(excep))
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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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@staticmethod
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def getDiskSpaceUsage(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 excep:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk space."
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+ "Error: %s" % str(excep))
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return float(percent)
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@staticmethod
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def getDiskSpaceForShrink(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 excep:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk space."
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+ "Error: %s" % str(excep))
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return float(percent)
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@staticmethod
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def getDiskInodeUsage(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 excep:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] % " disk Inode."
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+ "Error: %s" % str(excep))
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return float(percent)
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@staticmethod
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def getDiskMountType(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(DiskUtil.MTAB_FILE, "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 excep:
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raise Exception(ErrorCode.GAUSS_530["GAUSS_53011"] %
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" disk mount type." + "Error: %s" % str(excep))
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return fstype
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@staticmethod
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def getDevices():
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"""
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functino: get device
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input: NA
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output: NA
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"""
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cmd = "fdisk -l 2>/dev/null | grep \"Disk /dev/\" | " \
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"grep -Ev \"/dev/mapper/|loop\" | awk '{ print $2 }' | " \
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"awk -F'/' '{ print $NF }' | sed s/:$//g"
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(status, output) = subprocess.getstatusoutput(cmd)
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if status != 0:
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raise Exception(ErrorCode.GAUSS_514["GAUSS_51400"] % cmd + " Error: \n%s" % output)
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return output.split('\n')
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@staticmethod
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def get_disk_dev_id(dev_name):
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cmd = 'udevadm info -q symlink {}'.format(dev_name)
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sts, out = CmdUtil.getstatusoutput_by_fast_popen(cmd)
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if sts not in [0]:
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raise Exception(ErrorCode.GAUSS_504["GAUSS_50422"] %
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str(out).strip())
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if out.find('disk/by-id/scsi-') != -1:
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strtmp = out[out.index('disk/by-id/scsi-') + len('disk/by-id/scsi-'):]
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if out.find(' ') != -1:
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strtmp = strtmp.split()[0]
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return strtmp.strip()
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if out.find('disk/by-id/ultrapath') != -1:
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strtmp = out[out.index('disk/by-id/ultrapath') + len('disk/by-id/ultrapath'):]
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if out.find(' ') != -1:
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strtmp = strtmp.split()[0]
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strtmp = strtmp.split('-', 1)[1]
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return strtmp.strip()
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if out.find('disk/by-id/wwn-') != -1:
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strtmp = out[out.index('disk/by-id/wwn-') + len('disk/by-id/wwn-'):]
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if out.find(' ') != -1:
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strtmp = strtmp.split()[0]
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return strtmp.strip()
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if out.find('disk/by-id/ata-') != -1:
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strtmp = out[out.index('disk/by-id/ata-') + len('disk/by-id/ata-'):]
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if out.find(' ') != -1:
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strtmp = strtmp.split()[0]
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return strtmp.strip()
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if out.find('disk/by-id/dm-uuid-') != -1:
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strtmp = out[out.index('disk/by-id/dm-uuid-') + len('disk/by-id/dm-uuid-'):]
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if out.find(' ') != -1:
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strtmp = strtmp.split()[0]
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return strtmp.strip()
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return out.strip()
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@staticmethod
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def get_disk_dev_name(dev_name):
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cmd = 'udevadm info -q name {}'.format(dev_name)
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sts, out = CmdUtil.getstatusoutput_by_fast_popen(cmd)
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if sts not in [0]:
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raise Exception(ErrorCode.GAUSS_504["GAUSS_50422"] %
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str(out).strip())
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return out.strip()
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@staticmethod
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def active_udev():
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cmd = 'udevadm control --reload-rules; '
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cmd += 'udevadm trigger --type=devices --action=change; '
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cmd += 'udevadm trigger --type=devices --action=add; '
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cmd += 'udevadm trigger; '
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sts, out = CmdUtil.getstatusoutput_by_fast_popen(cmd)
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if sts not in [0]:
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raise Exception(ErrorCode.GAUSS_504["GAUSS_50423"] %
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str(out).strip())
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