Dans un système Lion Server (10.7.3 et 10.7.4 essayés) avec plusieurs disques attachés à un contrôleur HPT SATA, il y a un processus qui accède aux disques durs exactement toutes les 20 secondes. En conséquence, les disques ne se mettent jamais en veille (et s'éteignent).
Le modèle d'accès au disque n'est pas parallèle, mais séquentiel dans un laps de temps de 1 à 2 secondes.
Résolution
- Même lorsque les disques sont non monté y éjecté par diskutil, l'accès au disque continue à un rythme de 3 fois par minute.
-
iosnoop ne donne aucun indice sur le processus qui pourrait causer cet accès fréquent au disque. Il y a beaucoup de lignes comme :
0 1 W 47880 4096 launchd ??/<unknown (NULL v_parent)>/<unknown (NULL v_name)> dtrace: error on enabled probe ID 4 (ID 992: io:mach_kernel:buf_strategy:start): illegal operation in action #3 at DIF offset 0 0 1 W 2566032 8192 launchd ??/<unknown (NULL v_parent)>/<unknown (NULL v_name)> 0 1 W 2567040 8192 launchd ??/<unknown (NULL v_parent)>/<unknown (NULL v_name)>
La lecture S.M.A.R.T. est "Non supportée", voir diskutil info :
$ diskutil info disk6
Device Identifier: disk6
Device Node: /dev/disk6
Part of Whole: disk6
Device / Media Name: HPT DISK 1_4 Media
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)
File System: None
Content (IOContent): GUID_partition_scheme
OS Can Be Installed: No
Media Type: Generic
Protocol: SCSI
SCSI Domain ID: 0
SCSI Target ID: 4
SCSI LUN: 0
SMART Status: Not Supported
Total Size: 1.0 TB (1000204886016 Bytes) (exactly 1953525168 512-Byte-Blocks)
Volume Free Space: Not applicable (no file system)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Ejectable: Yes
Whole: Yes
Internal: No
OS 9 Drivers: No
Low Level Format: Not supported
Ce qui est étrange, c'est qu'iostat ne suit pas l'activité du disque, même si les voyants d'activité du disque s'allument et entendent une petite quantité d'activité du disque. Dans la sortie ci-dessous, le disque6 non monté est éjecté et le disque7 monté.
$ iostat -dw 1 disk{6,7}
disk6 disk7
KB/t tps MB/s KB/t tps MB/s
6.06 0 0.00 6.39 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
disk6 disk7
KB/t tps MB/s KB/t tps MB/s
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
0.00 0 0.00 0.00 0 0.00
Liste de Launchctl après avoir arrêté les démons d'écriture de disque les plus notoires :
$ sudo launchctl list
Password:
PID Status Label
3257 - 0x7fe6a3611ba0.anonymous.SecurityAgent
3252 - 0x7fe6a3611580.anonymous.ManagedClient
- 0 com.apple.ZoomWindow
- 0 com.apple.VoiceOver
- 0 com.apple.UserNotificationCenterAgent-LoginWindow
3253 - com.apple.UserEventAgent-LoginWindow
- 0 com.apple.tiswitcher
- 0 com.apple.storeagent
- 0 com.apple.store_helper
- 0 com.apple.scrod
- 0 com.apple.screensharing.agent
- 0 com.apple.ScreenReaderUIServer
3254 - com.apple.RemoteDesktop.agent
- 0 com.apple.netauth.user.gui
- 0 com.apple.isst
- 0 com.apple.imklaunchagent
- 0 com.apple.iCalPush
- 0 com.apple.coreservices.appleid.authentication
- 0 com.apple.btsa
- 0 com.apple.BezelUIServer
- 0 com.apple.AppleGraphicsWarning
- 0 com.apple.launchctl.LoginWindow
1 - 0x7fe6a360a900.anonymous.launchd
3246 - 0x7fe6a3605200.anonymous.loginwindow
- 0 com.apple.AppSandboxSMLoginItemEnabler
- 0 com.apple.security.pboxd
- 0 com.apple.cmio.registerassistantservice
- 0 com.apple.appkit.xpc.sandboxedServiceRunner
- 0 com.apple.automator.xpc.workflowServiceRunner
- 0 com.apple.hiservices-xpcservice
- 0 com.apple.cfpreferences-xpcservice
- 0 com.apple.DataDetectors.DataDetectorsActionService
- 0 com.apple.security.XPCKeychainSandboxCheck
- 0 com.apple.qtkitserver
- 0 com.apple.XType.FontHelper
- 0 com.apple.HasTRB
1 - 0x7fe6a342ed10.anonymous.launchd
3246 - 0x7fe6a342a450.anonymous.loginwindow
1 - 0x7fe6a3444940.anonymous.launchd
554 - 0x7fe6a3444630.anonymous.filecoordinatio
1 - 0x7fe6a342ea10.anonymous.launchd
38 - 0x7fe6a342e710.anonymous.distnoted
3485 - 0x7fe6a3435dd0.anonymous.sudo
3488 - 0x7fe6a3432e70.anonymous.launchctl
3484 - 0x7fe6a3609350.anonymous.sleep
3252 - 0x7fe6a3611890.anonymous.ManagedClient
3257 - com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186B2
3115 - org.postgresql.postgres
- 0 org.postfix.master
1288 - 0x7fe6a3603dd0.anonymous.sshd
1289 - 0x7fe6a3609650.anonymous.bash
1285 - 0x7fe6a343bbf0.anonymous.sshd
1169 - 0x7fe6a3610520.anonymous.ipfwloggerd
- 0 com.apple.authorizationhost.00000000-0000-0000-0000-0000000186B1
- 0 com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186B1
- 0 com.apple.launchd.peruser.93
- 0 com.apple.authorizationhost.00000000-0000-0000-0000-0000000186A8
- 0 com.apple.xpchelper.F5010000-0000-0000-0000-000000000000
3486 - com.apple.launchd.peruser.501
- 0 com.apple.launchd.peruser.92
- 0 com.apple.xpchelper.59000000-0000-0000-0000-000000000000
- 0 com.apple.launchd.peruser.89
- 0 com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186A8
- 0 com.apple.launchd.peruser.212
- 0 com.apple.launchd.peruser.70
1 - 0x7fe6a3438830.anonymous.launchd
230 - 0x7fe6a3438520.anonymous.raidman-httpsd
- 0 com.apple.launchd.peruser.222
- 0 com.apple.xpchelper.DE000000-0000-0000-0000-000000000000
174 - 0x7fe6a3600cc0.anonymous.sh
- 0 com.apple.launchd.peruser.84
163 - 0x7fe6a3433170.anonymous.s2s
161 - 0x7fe6a3432b70.anonymous.c2s
159 - 0x7fe6a3432570.anonymous.router
158 - 0x7fe6a3432270.anonymous.sm
- 0 com.apple.launchd.peruser.220
- 0 com.openssh.sshd
- 0 com.apple.screensharing
- 0 com.apple.odproxyd
- 0 com.apple.msrpc.wkssvc
- 0 com.apple.msrpc.srvsvc
- 0 com.apple.msrpc.netlogon
- 0 com.apple.msrpc.mdssvc
- 0 com.apple.msrpc.lsarpc
- 0 com.apple.launchd.peruser.0
- 0 com.apple.xpchelper.00000000-0000-0000-0000-000000000000
- 0 org.x.privileged_startx
81 - org.openldap.slapd
82 - org.ntp.ntpd
83 - org.jabber.jabberd_notification
- 0 org.cups.cupsd
- 62 org.clamav.freshclam-init
- 0 com.vix.cron
- 0 com.apple.xserve.serial-ports
- 0 com.apple.xscertd
- 0 com.apple.xscertd-helper
- 0 com.apple.xscertadmin
- 0 com.apple.xpchelper
- 0 com.apple.xgridd.pcastserver
3249 - com.apple.WindowServer
- 0 com.apple.webdavfs_load_kext
- 0 com.apple.warmd
- 0 com.apple.vsdbutil
- 0 com.apple.var-db-shadow-backup
- 0 com.apple.var-db-dslocal-backup
- 0 com.apple.UserNotificationCenter
30 - com.apple.UserEventAgent-System
- 0 com.apple.unmountassistant.sysagent
- 0 com.apple.uninstalld
- 0 com.apple.ucupdate.plist
- 0 com.apple.TrustEvaluationAgent.system
- 0 com.apple.taskgated
- 0 com.apple.taskgated-helper
93 - com.apple.SystemStarter
- 0 com.apple.systempreferences.writeconfig
- 0 com.apple.systempreferences.install
- 0 com.apple.systemkeychain
36 - com.apple.syslogd
- 0 com.apple.suhelperd
- 0 com.apple.storereceiptinstaller
- 0 com.apple.statd.notify
95 - com.apple.stackshot
- 0 com.apple.spindump_symbolicator
- 0 com.apple.spindump
- 0 com.apple.softwareupdatecheck.periodic
- 0 com.apple.softwareupdatecheck.initial
- 0 com.apple.smbfs_load_kext
- 0 com.apple.smb.preferences
- 0 com.apple.shutdown_monitor
96 - com.apple.ServerPerfLog
46 - com.apple.securityd
- 0 com.apple.SecurityAgent
- 0 com.apple.security.syspolicy
- 0 com.apple.scsid
- 0 com.apple.SCHelper
- 0 com.apple.sandboxd
- 0 com.apple.salearn
- 0 com.apple.rpcbind
- 0 com.apple.RFBEventHelper
- 0 com.apple.ReportCrash.Root
- 0 com.apple.RemoteDesktop.PrivilegeProxy
- 0 com.apple.racoon
- 0 com.apple.printtool.daemon
- 0 com.apple.preferences.timezone.auto
- 0 com.apple.preferences.timezone.admintool
37 - com.apple.powerd
- 0 com.apple.platform.ptmd
- 0 com.apple.pfctl
- 0 com.apple.periodic-weekly
- 0 com.apple.periodic-monthly
- 0 com.apple.periodic-daily
- 0 com.apple.PCIELaneConfigTool
- 0 com.apple.pcastagentconfigd
101 - com.apple.PasswordService
1089 - com.apple.opendirectoryd
- 0 com.apple.opendirectorybackup
- 0 com.apple.ocspd
33 - com.apple.notifyd
102 - com.apple.NotificationServer
- 0 com.apple.nis.ypbind
- 0 com.apple.nfsd
- 0 com.apple.newsyslog
- 0 com.apple.nlcd
- 0 com.apple.netauth.sys.gui
- 0 com.apple.netauth.sys.auth
- 0 com.apple.metadata.mds.spindump
- 0 com.apple.metadata.mds.scan
- 0 com.apple.mDNSResponderHelper
31 - com.apple.mDNSResponder
- 0 com.apple.mdmclient.daemon
- 0 com.apple.ManagedClient
3246 - com.apple.loginwindow
249 - com.apple.logind
- 0 com.apple.locum
- 0 com.apple.lockd
- 0 com.apple.locate
- 0 com.apple.kuncd
29 - com.apple.kextd
108 - com.apple.KernelEventAgent
109 - com.apple.Kerberos.kpasswdd
110 - com.apple.Kerberos.kdc
- 0 com.apple.Kerberos.kcm
111 - com.apple.Kerberos.kadmind
- 0 com.apple.Kerberos.digest-service
- 0 com.apple.kcproxy
- 0 com.apple.installd
- 0 com.apple.IFCStart
114 - com.apple.hidd
- 0 com.apple.HeadlessStartup
- 0 com.apple.hdiejectd
- 0 com.apple.gssd
41 - com.apple.fseventsd
- 0 com.apple.FontWorker
- 0 com.apple.fontmover
3263 - com.apple.fontd
- 0 com.apple.findmymacmessenger
- 0 com.apple.findmymacd
554 - com.apple.FileCoordination
3489 - com.apple.emlog
- 0 com.apple.efilogin-helper
- 0 com.apple.eapolcfg_auth
118 - com.apple.dynamic_pager
- 0 com.apple.dvdplayback.setregion
- 0 com.apple.DumpPanic
- 0 com.apple.DumpGPURestart
- 0 com.apple.dspluginhelperd
- 0 com.apple.dpd
38 - com.apple.distnoted.xpc.daemon
- 0 com.apple.diskmanagementd
34 - com.apple.diskarbitrationd
- 0 com.apple.DiagnosticReportCleanUp
235 - com.apple.cvmsServ
- 0 com.apple.corestorage.corestoragehelperd
- 0 com.apple.corestorage.corestoraged
50 - com.apple.coreservicesd
- 0 com.apple.coreservices.appleid.passwordcheck
- 0 com.apple.configureLocalKDC
35 - com.apple.configd
- 0 com.apple.collabd.quicklook
- 0 com.apple.collabd.expire
- 0 com.apple.cmio.VDCAssistant
- 0 com.apple.cmio.IIDCVideoAssistant
- 0 com.apple.cmio.AVCAssistant
- 0 com.apple.bsd.launchdadd
- 0 com.apple.bsd.dirhelper
- 0 com.apple.bnepd
- 0 com.apple.blued
- 0 com.apple.backupd
- 0 com.apple.awacsd
- 0 com.apple.avbdeviced
- 0 com.apple.automountd
124 - com.apple.autofsd
- 0 com.apple.authorizationhost
- 0 com.apple.auditd
347 - com.apple.audio.coreaudiod
- 0 com.apple.aslmanager
- 0 com.apple.applepushserviced
- 0 com.apple.appleprofilepolicyd
126 - com.apple.APNBridge
- 0 com.apple.AOSNotification-FMM
- 0 com.apple.alf
- 0 com.apple.airport.updateprefs
- 0 com.apple.airportd
- 0 com.apple.AirPort.wps
- 0 com.apple.afpfs_checkafp
- 0 com.apple.afpfs_afpLoad
- 0 com.apple.afctl
- 0 com.apple.ActivityMonitor
- 0 com.apple.AccountsConfigService
- 0 com.fernlightning.fseventer
- 0 com.apple.launchctl.System
Fs_usage donne presque toutes les 20 secondes ces motifs répétitifs :
$ sudo fs_usage -w
...
19:57:12.973849 exit 0.000027 sleep.37168
19:57:12.974393 select S=1 0.000239 W launchd.166
19:57:12.974779 close F=255 0.000003 .37199
19:57:12.974860 dup2 F=4 F=1 0.000003 .37199
19:57:12.974861 close F=4 0.000001 .37199
19:57:12.974867 close F=3 0.000001 .37199
19:57:12.975414 close F=4 0.000002 .37199
19:57:12.975460 close F=4 [ 9] 0.000001 .37199
19:57:12.975747 close F=3 0.000002 sh.37200
19:57:12.975748 close F=3 0.000002 .37199
19:57:12.975751 dup2 F=4 F=1 0.000003 sh.37200
19:57:12.975752 close F=4 0.000001 sh.37200
19:57:12.976252 dup2 F=3 F=0 0.000003 sh.37201
19:57:12.976254 close F=3 0.000001 sh.37201
19:57:12.976527 execve /bin/ps 0.000444 sh.37200
...
19:57:13.001362 stat64 [ 2] /AppleInternal 0.000007 sleep.37202
19:57:33.002940 exit 0.000030 sleep.37202
19:57:33.002960 select S=1 20.004119 W launchd.166
19:57:33.003463 select S=1 0.000350 W launchd.166
19:57:33.003841 close F=255 0.000003 .37204
19:57:33.003921 dup2 F=4 F=1 0.000003 .37204
19:57:33.003923 close F=4 0.000001 .37204
19:57:33.003929 close F=3 0.000001 .37204
19:57:33.004457 close F=4 0.000002 .37204
19:57:33.004502 close F=4 [ 9] 0.000001 .37204
19:57:33.004788 close F=3 0.000002 sh.37205
19:57:33.004788 close F=3 0.000002 .37204
19:57:33.004791 dup2 F=4 F=1 0.000003 sh.37205
19:57:33.004792 close F=4 0.000001 sh.37205
19:57:33.005270 dup2 F=3 F=0 0.000003 sh.37206
19:57:33.005272 close F=3 0.000001 sh.37206
19:57:33.005571 execve /bin/ps 0.000449 sh.37205
...
19:57:53.030653 exit 0.000027 sleep.37207
19:57:53.030668 select S=1 14.079398 W launchd.166
19:57:53.031187 select S=1 0.000360 W launchd.166
19:57:53.031576 close F=255 0.000003 .37225
19:57:53.031655 dup2 F=4 F=1 0.000003 .37225
19:57:53.031657 close F=4 0.000001 .37225
19:57:53.031663 close F=3 0.000001 .37225
19:57:53.032191 close F=4 0.000002 .37225
19:57:53.032235 close F=4 [ 9] 0.000001 .37225
19:57:53.032519 close F=3 0.000002 sh.37226
19:57:53.032522 dup2 F=4 F=1 0.000002 sh.37226
19:57:53.032523 close F=4 0.000001 sh.37226
19:57:53.032526 close F=3 0.000002 .37225
19:57:53.033006 dup2 F=3 F=0 0.000003 sh.37227
19:57:53.033008 close F=3 0.000001 sh.37227
19:57:53.033298 execve /bin/ps 0.000443 sh.37226
...
19:58:13.058381 exit 0.000028 sleep.37228
19:58:13.058397 select S=1 7.053934 W launchd.166
19:58:13.058916 select S=1 0.000339 W launchd.166
19:58:13.059297 close F=255 0.000002 .37251
19:58:13.059378 dup2 F=4 F=1 0.000003 .37251
19:58:13.059380 close F=4 0.000001 .37251
19:58:13.059386 close F=3 0.000001 .37251
19:58:13.059923 close F=4 0.000002 .37251
19:58:13.059966 close F=4 [ 9] 0.000001 .37251
19:58:13.060247 close F=3 0.000002 .37251
19:58:13.060251 close F=3 0.000002 sh.37252
19:58:13.060254 dup2 F=4 F=1 0.000003 sh.37252
19:58:13.060256 close F=4 0.000001 sh.37252
19:58:13.060723 dup2 F=3 F=0 0.000004 sh.37253
19:58:13.060724 close F=3 0.000001 sh.37253
19:58:13.061024 execve /bin/ps 0.000434 sh.37252
...
Les disques sont toujours accédés toutes les 20 secondes, même après avoir déchargé presque tous les éléments de launchd :
$ sudo launchctl list
PID Status Label
- 0 com.apple.appkit.xpc.sandboxedServiceRunner
- 0 com.apple.hiservices-xpcservice
- 0 com.apple.security.XPCKeychainSandboxCheck
- 0 com.apple.cfpreferences-xpcservice
- 0 com.apple.cmio.registerassistantservice
7194 - 0x7fe6a4c10190.anonymous.sudo
7195 - 0x7fe6a4c0fcf0.anonymous.launchctl
- 0 com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186B2
- 0 org.postfix.master
1288 - 0x7fe6a3603dd0.anonymous.sshd
1289 - 0x7fe6a3609650.anonymous.bash
1285 - 0x7fe6a343bbf0.anonymous.sshd
- 0 com.apple.authorizationhost.00000000-0000-0000-0000-0000000186B1
- 0 com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186B1
- 0 com.apple.launchd.peruser.93
- 0 com.apple.authorizationhost.00000000-0000-0000-0000-0000000186A8
- 0 com.apple.xpchelper.F5010000-0000-0000-0000-000000000000
7184 - com.apple.launchd.peruser.501
- 0 com.apple.launchd.peruser.92
- 0 com.apple.xpchelper.59000000-0000-0000-0000-000000000000
- 0 com.apple.launchd.peruser.89
- 0 com.apple.SecurityAgent.00000000-0000-0000-0000-0000000186A8
- 0 com.apple.launchd.peruser.212
- 0 com.apple.launchd.peruser.70
1 - 0x7fe6a3438830.anonymous.launchd
- 0 com.apple.launchd.peruser.222
- 0 com.apple.xpchelper.DE000000-0000-0000-0000-000000000000
- 0 com.apple.launchd.peruser.84
- 0 com.apple.launchd.peruser.220
- 0 com.openssh.sshd
- 0 com.apple.screensharing
- 0 com.apple.odproxyd
- 0 com.apple.msrpc.wkssvc
- 0 com.apple.msrpc.srvsvc
- 0 com.apple.msrpc.mdssvc
- 0 com.apple.msrpc.lsarpc
- 0 com.apple.launchd.peruser.0
- 0 com.apple.xpchelper.00000000-0000-0000-0000-000000000000
- 0 org.x.privileged_startx
- 0 org.cups.cupsd
- 62 org.clamav.freshclam-init
- 0 com.vix.cron
- 0 com.apple.xserve.serial-ports
- 0 com.apple.xscertd
- 0 com.apple.xscertd-helper
- 0 com.apple.xscertadmin
- 0 com.apple.xpchelper
- 0 com.apple.xgridd.pcastserver
- 0 com.apple.webdavfs_load_kext
- 0 com.apple.warmd
- 0 com.apple.vsdbutil
- 0 com.apple.var-db-shadow-backup
- 0 com.apple.var-db-dslocal-backup
- 0 com.apple.UserNotificationCenter
- 0 com.apple.unmountassistant.sysagent
- 0 com.apple.uninstalld
- 0 com.apple.ucupdate.plist
- 0 com.apple.TrustEvaluationAgent.system
- 0 com.apple.taskgated-helper
- 0 com.apple.systempreferences.writeconfig
- 0 com.apple.systempreferences.install
- 0 com.apple.systemkeychain
- 0 com.apple.suhelperd
- 0 com.apple.storereceiptinstaller
- 0 com.apple.statd.notify
- 0 com.apple.spindump_symbolicator
- 0 com.apple.spindump
- 0 com.apple.softwareupdatecheck.periodic
- 0 com.apple.softwareupdatecheck.initial
- 0 com.apple.smbfs_load_kext
- 0 com.apple.smb.preferences
- 0 com.apple.shutdown_monitor
- 0 com.apple.SecurityAgent
- 0 com.apple.security.syspolicy
- 0 com.apple.scsid
- 0 com.apple.SCHelper
- 0 com.apple.sandboxd
- 0 com.apple.salearn
- 0 com.apple.rpcbind
- 0 com.apple.RFBEventHelper
- 0 com.apple.ReportCrash.Root
- 0 com.apple.RemoteDesktop.PrivilegeProxy
- 0 com.apple.racoon
- 0 com.apple.printtool.daemon
- 0 com.apple.preferences.timezone.auto
- 0 com.apple.preferences.timezone.admintool
- 0 com.apple.platform.ptmd
- 0 com.apple.pfctl
- 0 com.apple.periodic-weekly
- 0 com.apple.periodic-monthly
- 0 com.apple.periodic-daily
- 0 com.apple.PCIELaneConfigTool
- 0 com.apple.pcastagentconfigd
1089 - com.apple.opendirectoryd
- 0 com.apple.opendirectorybackup
- 0 com.apple.ocspd
- 0 com.apple.nis.ypbind
- 0 com.apple.nfsd
- 0 com.apple.newsyslog
- 0 com.apple.nlcd
- 0 com.apple.netauth.sys.gui
- 0 com.apple.netauth.sys.auth
- 0 com.apple.metadata.mds.spindump
- 0 com.apple.metadata.mds.scan
- 0 com.apple.mDNSResponderHelper
- 0 com.apple.mdmclient.daemon
- 0 com.apple.ManagedClient
- -9 com.apple.loginwindow
- 0 com.apple.locum
- 0 com.apple.lockd
- 0 com.apple.locate
- 0 com.apple.kuncd
- 0 com.apple.Kerberos.kcm
- 0 com.apple.Kerberos.digest-service
- 0 com.apple.kcproxy
- 0 com.apple.installd
- 0 com.apple.IFCStart
- 0 com.apple.HeadlessStartup
- 0 com.apple.hdiejectd
- 0 com.apple.gssd
- 0 com.apple.FontWorker
- 0 com.apple.fontmover
- 0 com.apple.fontd
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0 votes
Les disques durent beaucoup plus longtemps s'ils sont maintenus à une température constante ; le fait de tourner sans cesse en haut et en bas provoque des cycles thermiques qui tuent les disques.
0 votes
Il est assez étrange que même un objet non monté les interroge. Je pense qu'il ne s'agit pas du système d'exploitation principal, mais du contrôleur lui-même ou d'un logiciel qui lit intentionnellement l'arborescence des périphériques et interroge des éléments pour surveiller la situation. Time Machine et Spotlight sont inactifs lorsqu'un volume est démonté, alors regardez les applications 3PP et peut-être creusez dans les spécifications techniques de votre contrôleur. Il semble étrange qu'un contrôleur SATA puisse parler à des disques SCSI, mais peut-être que c'est également possible avec votre matériel spécifique.
0 votes
@Chris S : il y a d'autres périphériques et lecteurs qui génèrent de la chaleur et les ventilateurs du châssis sont thermo contrôlés par un capteur qui est situé dans le compartiment du disque.
0 votes
@bmike Je pense que vous êtes proche de "un logiciel qui lit intentionnellement l'arbre du dispositif".
0 votes
Il pourrait s'agir d'un problème matériel.