[CentOS] Very slow disk I/O
John R Pierce
pierce at hogranch.comFri Jan 30 04:14:01 UTC 2015
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On 1/29/2015 7:21 PM, Jatin Davey wrote: > [root at localhost ~]# lspci | grep RAID > 05:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS-3 > 3108 [Invader] (rev 02) to get info out of those, you need to install MegaCli64 from LSI Logic, which has the ugliest command lines and output you've ever seen. I use the python script below, which I put in /root/bin/lsi-raidinfo and chmod +x it, then run it like this.. # lsi-raidinfo -- Controllers -- -- ID | Model c0 | LSI MegaRAID SAS 9261-8i -- Volumes -- -- ID | Type | Size | Status | InProgress volume c0u0 | RAID1 1x2 | 2727G | Optimal | None volume c0u1 | RAID6 1x8 | 16370G | Optimal | None volume c0u2 | RAID6 1x8 | 16370G | Optimal | None -- Disks -- -- Encl:Slot | vol-span-unit | Model | Status disk 8:0 | 0-0-0 | ST33000650NS 0003 | Online, Spun Up disk 8:1 | 0-0-1 | ST33000650NS 0003 | Online, Spun Up disk 8:2 | 1-0-0 | ST33000650NS 0003 | Online, Spun Up disk 8:3 | 1-0-1 | ST33000650NS 0003 | Online, Spun Up disk 8:4 | 1-0-2 | ST33000650NS 0003 | Online, Spun Up disk 8:5 | 1-0-3 | ST33000650NS 0003 | Online, Spun Up disk 8:6 | 1-0-4 | ST33000650NS 0003 | Online, Spun Up disk 8:7 | 1-0-5 | ST33000650NS 0003 | Online, Spun Up disk 8:8 | 1-0-6 | ST33000650NS 0003 | Online, Spun Up disk 8:9 | 1-0-7 | ST33000650NS 0003 | Online, Spun Up disk 8:10 | 2-0-0 | ST33000650NS 0003 | Online, Spun Up disk 8:11 | 2-0-1 | ST33000650NS 0003 | Online, Spun Up disk 8:12 | 2-0-2 | ST33000650NS 0003 | Online, Spun Up disk 8:13 | 2-0-3 | ST33000650NS 0003 | Online, Spun Up disk 8:14 | 2-0-4 | ST33000650NS 0003 | Online, Spun Up disk 8:15 | 2-0-5 | ST33000650NS 0003 | Online, Spun Up disk 8:16 | 2-0-6 | ST33000650NS 0003 | Online, Spun Up disk 8:17 | 2-0-7 | ST33000650NS 0003 | Online, Spun Up disk 8:18 | x-x-x | ST33000650NS 0003 | Hotspare, Spun down disk 8:19 | x-x-x | ST33000650NS 0003 | Hotspare, Spun down (yes, that system has 20 disks, in 3 raids + 2 hot spares) *****************start of my script*********** #!/usr/bin/python # megaclisas-status 0.6 # renamed lsi-raidinfo # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Pulse 2; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, # MA 02110-1301, USA. # # Copyright (C) 2007-2009 Adam Cecile (Le_Vert) ## modified by johnpuskar at gmail.com 08/14/11 # fixed for LSI 9285-8e on Openfiler ## modified by pierce at hogranch.com 2012-01-05 # fixed for newer version of megacli output on RHEL6/CentOS6 # output format extended to show raid span-unit and rebuild % complete import os import re import sys if len(sys.argv) > 2: print 'Usage: lsi-raidinfo [-d]' sys.exit(1) # if argument -d, only print disk info printarray = True printcontroller = True if len(sys.argv) > 1: if sys.argv[1] == '-d': printarray = False printcontroller = False else: print 'Usage: lsi-raidinfo [-d]' sys.exit(1) # Get command output def getOutput(cmd): output = os.popen(cmd) lines = [] for line in output: if not re.match(r'^$',line.strip()): lines.append(line.strip()) return lines def returnControllerNumber(output): for line in output: if re.match(r'^Controller Count.*$',line.strip()): return int(line.split(':')[1].strip().strip('.')) def returnControllerModel(output): for line in output: if re.match(r'^Product Name.*$',line.strip()): return line.split(':')[1].strip() def returnArrayNumber(output): i = 0 for line in output: if re.match(r'^Virtual (Drive|Disk).*$',line.strip()): i += 1 return i def returnArrayInfo(output,controllerid,arrayid): id = 'c'+str(controllerid)+'u'+str(arrayid) # print 'DEBUG: id = '+str(id) operationlinennumber = False linenumber = 0 units = 1 type = 'JBOD' span = 0 size = 0 for line in output: if re.match(r'^RAID Level.*$',line.strip()): type = line.strip().split(':')[1].strip() type = 'RAID' + type.split(',')[0].split('-')[1].strip() # print 'debug: type = '+str(type) if re.match(r'^Number.*$',line.strip()): units = line.strip().split(':')[1].strip() if re.match(r'^Span Depth.*$',line.strip()): span = line.strip().split(':')[1].strip() if re.match(r'^Size.*$',line.strip()): # Size reported in MB if re.match(r'^.*MB$',line.strip().split(':')[1]): size = line.strip().split(':')[1].strip('MB').strip() size = str(int(round((float(size) / 1000))))+'G' # Size reported in TB elif re.match(r'^.*TB$',line.strip().split(':')[1]): size = line.strip().split(':')[1].strip('TB').strip() size = str(int(round((float(size) * 1000))))+'G' # Size reported in GB (default) else: size = line.strip().split(':')[1].strip('GB').strip() size = str(int(round((float(size)))))+'G' if re.match(r'^State.*$',line.strip()): state = line.strip().split(':')[1].strip() if re.match(r'^Ongoing Progresses.*$',line.strip()): operationlinennumber = linenumber linenumber += 1 if operationlinennumber: inprogress = output[operationlinennumber+1] else: inprogress = 'None' if span > 1: type = type+'0' type = type + ' ' + str(span) + 'x' + str(units) return [id,type,size,state,inprogress] def returnDiskInfo(output,controllerid,currentarrayid): arrayid = False oldarrayid = False olddiskid = False table = [] state = 'Offline' model = 'Unknown' enclnum = 'Unknown' slotnum = 'Unknown' enclsl = 'Unknown' firstDisk = True for line in output: if re.match(r'Firmware state: .*$',line.strip()): state = line.split(':')[1].strip() if re.match(r'Rebuild',state): cmd2 = '/opt/MegaRAID/MegaCli/MegaCli64 pdrbld showprog physdrv['+str(enclnum)+':'+str(slotnum)+'] a'+str(controllerid)+' nolog' ll = getOutput(cmd2) state += ' completed ' + re.sub(r'Rebuild Progress.*Completed', '', ll[0]).strip(); if re.match(r'Slot Number: .*$',line.strip()): slotnum = line.split(':')[1].strip() if re.match(r'Inquiry Data: .*$',line.strip()): model = line.split(':')[1].strip() model = re.sub(' +', ' ', model) model = re.sub('Hotspare Information', '', model).strip() #remove bogus output from firmware 12.12 if re.match(r"(Drive|Disk)'s postion: .*$",line.strip()): spans = line.split(',') span = re.sub(r"(Drive|Disk).*DiskGroup:", '', spans[0]).strip()+'-' span += spans[1].split(':')[1].strip()+'-' span += spans[2].split(':')[1].strip() if re.match(r'Enclosure Device ID: [0-9]+$',line.strip()): if firstDisk == True: firstDisk = False else: enclsl = str(enclnum)+':'+str(slotnum) table.append([str(enclsl), span, model, state]) span = 'x-x-x' enclnum = line.split(':')[1].strip() # Last disk of last array enclsl = str(enclnum)+':'+str(slotnum) table.append([str(enclsl), span, model, state]) arraytable = [] for disk in table: arraytable.append(disk) return arraytable cmd = '/opt/MegaRAID/MegaCli/MegaCli64 adpcount nolog' output = getOutput(cmd) controllernumber = returnControllerNumber(output) bad = False # List available controller if printcontroller: print '-- Controllers --' print '-- ID | Model' controllerid = 0 while controllerid < controllernumber: cmd = '/opt/MegaRAID/MegaCli/MegaCli64 adpallinfo a'+str(controllerid)+' nolog' output = getOutput(cmd) controllermodel = returnControllerModel(output) print 'c'+str(controllerid)+' | '+controllermodel controllerid += 1 print '' if printarray: controllerid = 0 print '-- Volumes --' print '-- ID | Type | Size | Status | InProgress' # print 'controller number'+str(controllernumber) while controllerid < controllernumber: arrayid = 0 cmd = '/opt/MegaRAID/MegaCli/MegaCli64 ldinfo lall a'+str(controllerid)+' nolog' output = getOutput(cmd) arraynumber = returnArrayNumber(output) # print 'array number'+str(arraynumber) while arrayid < arraynumber: cmd = '/opt/MegaRAID/MegaCli/MegaCli64 ldinfo l'+str(arrayid)+' a'+str(controllerid)+' nolog' # print 'DEBUG: running '+str(cmd) output = getOutput(cmd) # print 'DEBUG: output '+str(output) arrayinfo = returnArrayInfo(output,controllerid,arrayid) print 'volume '+arrayinfo[0]+' | '+arrayinfo[1]+' | '+arrayinfo[2]+' | '+arrayinfo[3]+' | '+arrayinfo[4] if not arrayinfo[3] == 'Optimal': bad = True arrayid += 1 controllerid += 1 print '' print '-- Disks --' print '-- Encl:Slot | vol-span-unit | Model | Status' controllerid = 0 while controllerid < controllernumber: arrayid = 0 cmd = '/opt/MegaRAID/MegaCli/MegaCli64 ldinfo lall a'+str(controllerid)+' nolog' output = getOutput(cmd) arraynumber = returnArrayNumber(output) while arrayid<arraynumber: #grab disk arrayId info cmd = '/opt/MegaRAID/MegaCli/MegaCli64 pdlist a'+str(controllerid)+' nolog' #print 'debug: running '+str(cmd) output = getOutput(cmd) arraydisk = returnDiskInfo(output,controllerid,arrayid) for array in arraydisk: print 'disk '+array[0]+' | '+array[1]+' | '+array[2]+' | '+array[3] arrayid += 1 controllerid += 1 if bad: print '\nThere is at least one disk/array in a NOT OPTIMAL state.' sys.exit(1) *****************end of the script************** -- john r pierce 37N 122W somewhere on the middle of the left coast
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