Changes between Version 4 and Version 5 of TipAndDoc/Linux

Timestamp:

Apr 16, 2012 5:26:13 PM (12 years ago)

Author:

mitty

Comment:

--

TipAndDoc/Linux

@@ -50 +50 @@
  * [http://www37.atwiki.jp/centos-homeserver/pages/20.html CentOSでホームサーバを作ろう - データ用HDDの準備]
  * [http://d.hatena.ne.jp/qpSHiNqp/20110214/1297651801 udevによるデバイスの命名の固定化 - しんたろの日記]
+ * [http://www.cyberciti.biz/tips/linux-assign-static-names-to-scsi-devices.html Linux udev tip: Assign Static SCSI Device Name]
+ * [http://baalzephon.dyndns.org/tech/index.php?udev%E3%83%A1%E3%83%A2 udevメモ - PukiWiki Plus!]
+
+ == /dev/sda を他の名前にする ==
+ * 現状では成功していない
+
+ === 元の状態 ===
+ * mitty@walken:~$ sudo udevadm info -q path -n /dev/sda
+{{{
+/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+}}}
+
+ * mitty@walken:~$ sudo udevadm info --query=all --name=/dev/sda
+{{{
+P: /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+N: sda
+S: block/8:0
+S: disk/by-id/scsi-SATA_ST3500418AS_6VM9ABYD
+S: disk/by-id/ata-ST3500418AS_6VM9ABYD
+S: disk/by-id/wwn-0x5000c5001eda26f9
+S: disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0
+E: UDEV_LOG=3
+E: DEVPATH=/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+E: MAJOR=8
+E: MINOR=0
+E: DEVNAME=/dev/sda
+E: DEVTYPE=disk
+E: SUBSYSTEM=block
+E: ID_ATA=1
+E: ID_TYPE=disk
+E: ID_BUS=ata
+E: ID_MODEL=ST3500418AS
+E: ID_MODEL_ENC=ST3500418AS\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
+E: ID_REVISION=CC38
+E: ID_SERIAL=ST3500418AS_6VM9ABYD
+E: ID_SERIAL_SHORT=6VM9ABYD
+E: ID_ATA_WRITE_CACHE=1
+E: ID_ATA_WRITE_CACHE_ENABLED=1
+E: ID_ATA_FEATURE_SET_HPA=1
+E: ID_ATA_FEATURE_SET_HPA_ENABLED=1
+E: ID_ATA_FEATURE_SET_PM=1
+E: ID_ATA_FEATURE_SET_PM_ENABLED=1
+E: ID_ATA_FEATURE_SET_SECURITY=1
+E: ID_ATA_FEATURE_SET_SECURITY_ENABLED=0
+E: ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=82
+E: ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=82
+E: ID_ATA_FEATURE_SET_SECURITY_FROZEN=1
+E: ID_ATA_FEATURE_SET_SMART=1
+E: ID_ATA_FEATURE_SET_SMART_ENABLED=1
+E: ID_ATA_FEATURE_SET_AAM=1
+E: ID_ATA_FEATURE_SET_AAM_ENABLED=1
+E: ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=254
+E: ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=254
+E: ID_ATA_DOWNLOAD_MICROCODE=1
+E: ID_ATA_SATA=1
+E: ID_ATA_SATA_SIGNAL_RATE_GEN2=1
+E: ID_ATA_SATA_SIGNAL_RATE_GEN1=1
+E: ID_ATA_ROTATION_RATE_RPM=7200
+E: ID_WWN=0x5000c5001eda26f9
+E: ID_WWN_WITH_EXTENSION=0x5000c5001eda26f9
+E: ID_SCSI_COMPAT=SATA_ST3500418AS_6VM9ABYD
+E: ID_PATH=pci-0000:00:1f.2-scsi-0:0:0:0
+E: ID_PART_TABLE_TYPE=dos
+E: UDISKS_PRESENTATION_NOPOLICY=0
+E: UDISKS_PARTITION_TABLE=1
+E: UDISKS_PARTITION_TABLE_SCHEME=mbr
+E: UDISKS_PARTITION_TABLE_COUNT=2
+E: UDISKS_ATA_SMART_IS_AVAILABLE=1
+E: DEVLINKS=/dev/block/8:0 /dev/disk/by-id/scsi-SATA_ST3500418AS_6VM9ABYD /dev/disk/by-id/ata-ST3500418AS_6VM9ABYD /dev/disk/by-id/wwn-0x5000c5001eda26f9 /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0
+
+}}}
+
+ * mitty@walken:~$ sudo udevadm info -a --name=/dev/sda
+{{{
+
+Udevadm info starts with the device specified by the devpath and then
+walks up the chain of parent devices. It prints for every device
+found, all possible attributes in the udev rules key format.
+A rule to match, can be composed by the attributes of the device
+and the attributes from one single parent device.
+
+  looking at device '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda':
+    KERNEL=="sda"
+    SUBSYSTEM=="block"
+    DRIVER==""
+    ATTR{range}=="16"
+    ATTR{ext_range}=="256"
+    ATTR{removable}=="0"
+    ATTR{ro}=="0"
+    ATTR{size}=="976773168"
+    ATTR{alignment_offset}=="0"
+    ATTR{discard_alignment}=="0"
+    ATTR{capability}=="50"
+    ATTR{stat}=="    7129      217   287320    92724     2036      269    47453   141436        0    35592   234152"
+    ATTR{inflight}=="       0        0"
+    ATTR{events}==""
+    ATTR{events_async}==""
+    ATTR{events_poll_msecs}=="-1"
+
+  looking at parent device '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0':
+    KERNELS=="2:0:0:0"
+    SUBSYSTEMS=="scsi"
+    DRIVERS=="sd"
+    ATTRS{device_blocked}=="0"
+    ATTRS{type}=="0"
+    ATTRS{scsi_level}=="6"
+    ATTRS{vendor}=="ATA     "
+    ATTRS{model}=="ST3500418AS     "
+    ATTRS{rev}=="CC38"
+    ATTRS{state}=="running"
+    ATTRS{timeout}=="30"
+    ATTRS{iocounterbits}=="32"
+    ATTRS{iorequest_cnt}=="0x24dc"
+    ATTRS{iodone_cnt}=="0x24c0"
+    ATTRS{ioerr_cnt}=="0xc"
+    ATTRS{modalias}=="scsi:t-0x00"
+    ATTRS{evt_media_change}=="0"
+    ATTRS{queue_depth}=="31"
+    ATTRS{queue_ramp_up_period}=="120000"
+    ATTRS{queue_type}=="simple"
+
+  looking at parent device '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0':
+    KERNELS=="target2:0:0"
+    SUBSYSTEMS=="scsi"
+    DRIVERS==""
+
+  looking at parent device '/devices/pci0000:00/0000:00:1f.2/host2':
+    KERNELS=="host2"
+    SUBSYSTEMS=="scsi"
+    DRIVERS==""
+
+  looking at parent device '/devices/pci0000:00/0000:00:1f.2':
+    KERNELS=="0000:00:1f.2"
+    SUBSYSTEMS=="pci"
+    DRIVERS=="ahci"
+    ATTRS{vendor}=="0x8086"
+    ATTRS{device}=="0x3b22"
+    ATTRS{subsystem_vendor}=="0x8086"
+    ATTRS{subsystem_device}=="0x0037"
+    ATTRS{class}=="0x010601"
+    ATTRS{irq}=="49"
+    ATTRS{local_cpus}=="00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,0000000f"
+    ATTRS{local_cpulist}=="0-3"
+    ATTRS{modalias}=="pci:v00008086d00003B22sv00008086sd00000037bc01sc06i01"
+    ATTRS{numa_node}=="-1"
+    ATTRS{dma_mask_bits}=="64"
+    ATTRS{consistent_dma_mask_bits}=="64"
+    ATTRS{enable}=="1"
+    ATTRS{broken_parity_status}=="0"
+    ATTRS{msi_bus}==""
+
+  looking at parent device '/devices/pci0000:00':
+    KERNELS=="pci0000:00"
+    SUBSYSTEMS==""
+    DRIVERS==""
+
+}}}
+
+
+ * mitty@walken:~$ sudo /lib/udev/scsi_id --page=0x83 --whitelisted --device=/dev/sda
+{{{
+35000c5001eda26f9
+}}}
+ * mitty@walken:~$ sudo /lib/udev/scsi_id -g -u --device /dev/sda
+{{{
+35000c5001eda26f9
+}}}
+
+ * mitty@walken:~$ ls -l /sys/block/
+{{{
+total 0
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop0 -> ../devices/virtual/block/loop0
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop1 -> ../devices/virtual/block/loop1
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop2 -> ../devices/virtual/block/loop2
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop3 -> ../devices/virtual/block/loop3
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop4 -> ../devices/virtual/block/loop4
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop5 -> ../devices/virtual/block/loop5
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop6 -> ../devices/virtual/block/loop6
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 loop7 -> ../devices/virtual/block/loop7
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 sda -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+lrwxrwxrwx 1 root root 0 Apr 16 15:09 sr0 -> ../devices/pci0000:00/0000:00:1f.2/host5/target5:0:0/5:0:0:0/block/sr0
+}}}
+
+ === 実験 ===
+ * /etc/udev/rules.d/10-fixed_hdd.rules
+{{{
+# set device name for ST3500418AS 6VM9ABYD
+SUBSYSTEMS=="block", ENV{ID_SERIAL}=="ST3500418AS_6VM9ABYD", NAME="sdx%n"
+}}}
+  * 成功しないがエラーも出ない
+
+ * /etc/udev/rules.d/10-fixed_hdd.rules
+{{{
+# set device name for ST3500418AS 6VM9ABYD
+SUBSYSTEMS=="block", PROGRAM=="/lib/udev/scsi_id -g -u --device %p", RESULT=="35000c5001eda26f9", NAME="sdx%n"
+}}}
+  * mitty@walken:~$ sudo udevadm test /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+{{{
+run_command: calling: test
+udevadm_test: version 164
+This program is for debugging only, it does not run any program,
+specified by a RUN key. It may show incorrect results, because
+some values may be different, or not available at a simulation run.
+
+parse_file: reading '/etc/udev/rules.d/10-fixed_hdd.rules' as rules file
+parse_file: reading '/lib/udev/rules.d/40-hplip.rules' as rules file
+
+(snip)
+
+udev_rules_new: rules use 231672 bytes tokens (19306 * 12 bytes), 35564 bytes buffer
+udev_rules_new: temporary index used 60940 bytes (3047 * 20 bytes)
+udev_device_new_from_syspath: device 0x7f1093f7c340 has devpath '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda'
+udev_device_new_from_syspath: device 0x7f1093f7cee0 has devpath '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda'
+udev_device_read_db: device 0x7f1093f7cee0 filled with db file data
+udev_rules_apply_to_event: PROGRAM '/lib/udev/scsi_id -g -u --device /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda' /etc/udev/rules.d/10-fixed_hdd.rules:2
+util_run_program: '/lib/udev/scsi_id -g -u --device /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda' started
+util_run_program: '/lib/udev/scsi_id -g -u --device /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda' returned with exitcode 1
+udev_device_new_from_syspath: device 0x7f1093f7c5c0 has devpath '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0'
+udev_device_new_from_syspath: device 0x7f1093f77e30 has devpath '/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0'
+udev_device_new_from_syspath: device 0x7f1093f78160 has devpath '/devices/pci0000:00/0000:00:1f.2/host2'
+udev_device_new_from_syspath: device 0x7f1093f78480 has devpath '/devices/pci0000:00/0000:00:1f.2'
+udev_device_new_from_syspath: device 0x7f1093f78790 has devpath '/devices/pci0000:00'
+
+(snip)
+}}}
+  * mitty@walken:~$ grep scsi_id /var/log/syslog
+{{{
+Apr 16 16:17:48 walken scsi_id[4773]: custom logging function 0x7f3411a38010 registered
+Apr 16 16:17:48 walken scsi_id[4773]: scsi_id: cannot open /devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda: No such file or directory
+Apr 16 16:17:48 walken scsi_id[4776]: custom logging function 0x7f96ccf96010 registered
+}}}
+  * scsi_idのオプションが変わった模様
+   * [http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=493075 #493075 - scsi_id changed commandline syntax (breaks multipath) - Debian Bug report logs]
+
+ * /etc/udev/rules.d/10-fixed_hdd.rules
+{{{
+# set device name for ST3500418AS 6VM9ABYD
+SUBSYSTEMS=="block", DEVPATH=="/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda", NAME="sdx%n"
+}}}
+  * boot中のコンソール画面
+{{{
+Waiting for /dev to be fully populated...udevd-work[353]: kernel-provided name '
+sda' and NAME= 'sdx' disagree, please use SYMLINK+= or change the kernel to prov
+ide the proper name
+}}}
+  * mitty@walken:~$ ls -l /dev/sd*
+{{{
+brw------- 1 root root 8, 0 Apr 16 16:30 /dev/sda
+brw-rw---- 1 root disk 8, 1 Apr 16 16:30 /dev/sda1
+brw-rw---- 1 root disk 8, 2 Apr 16 16:30 /dev/sda2
+brw-rw---- 1 root disk 8, 0 Apr 16 16:30 /dev/sdx
+}}}
+  * mitty@walken:~$ sudo fdisk -lu /dev/sda
+{{{
+Disk /dev/sda: 500.1 GB, 500107862016 bytes
+255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
+Units = sectors of 1 * 512 = 512 bytes
+Sector size (logical/physical): 512 bytes / 512 bytes
+I/O size (minimum/optimal): 512 bytes / 512 bytes
+Disk identifier: 0x00086666
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sda1   *        2048   961177599   480587776   83  Linux
+/dev/sda2       961177600   976771071     7796736   82  Linux swap / Solaris
+}}}
+  * mitty@walken:~$ sudo fdisk -lu /dev/sdx
+{{{
+Disk /dev/sdx: 500.1 GB, 500107862016 bytes
+255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
+Units = sectors of 1 * 512 = 512 bytes
+Sector size (logical/physical): 512 bytes / 512 bytes
+I/O size (minimum/optimal): 512 bytes / 512 bytes
+Disk identifier: 0x00086666
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sdx1   *        2048   961177599   480587776   83  Linux
+/dev/sdx2       961177600   976771071     7796736   82  Linux swap / Solaris
+}}}
+  * mitty@walken:~$ ls -l /sys/block/
+{{{
+total 0
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop0 -> ../devices/virtual/block/loop0
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop1 -> ../devices/virtual/block/loop1
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop2 -> ../devices/virtual/block/loop2
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop3 -> ../devices/virtual/block/loop3
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop4 -> ../devices/virtual/block/loop4
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop5 -> ../devices/virtual/block/loop5
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop6 -> ../devices/virtual/block/loop6
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 loop7 -> ../devices/virtual/block/loop7
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 sda -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sda
+lrwxrwxrwx 1 root root 0 Apr 16 16:51 sr0 -> ../devices/pci0000:00/0000:00:1f.2/host5/target5:0:0/5:0:0:0/block/sr0
+}}}
+   * 元のまま
+
+ * /etc/udev/rules.d/10-fixed_hdd.rules
+{{{
+# set device name for ST3500418AS 6VM9ABYD
+SUBSYSTEMS=="block", ATTR{size}=="976773168" , NAME="sdx%n"
+}}}
+  * 同じエラー
+{{{
+Waiting for /dev to be fully populated...udevd-work[353]: kernel-provided name '
+sda' and NAME= 'sdx' disagree, please use SYMLINK+= or change the kernel to prov
+ide the proper name
+}}}