Contenido:
Listar HBAs
$ lspci |grep -i hba
1c:00.0 Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)
24:00.0 Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)
ó
$ ls /sys/class/fc_host/ho*
/sys/class/fc_host/host3:
device issue_lip port_id port_state speed subsystem symbolic_name tgtid_bind_type
fabric_name node_name port_name port_type statistics supported_classes system_hostname uevent
/sys/class/fc_host/host4:
device issue_lip port_id port_state speed subsystem symbolic_name tgtid_bind_type
fabric_name node_name port_name port_type statistics supported_classes system_hostname uevent
ó
$ systool -c fc_host
Class = "fc_host"
Class Device = "host3"
Device = "host3"
Class Device = "host4"
Device = "host4"
Nota: Si no tenemos systool:
$ sudo yum search sysfsutil
Loaded plugins: fastestmirror, versionlock
Loading mirror speeds from cached hostfile
* base: centos.brnet.net.br
* extras: centos.brnet.net.br
* updates: centos.brnet.net.br
================================================= N/S Matched: sysfsutil =================================================
sysfsutils.x86_64 : Utilities for interfacing with sysfs
$ yum install sysfsutils.x86_64
Podemos, también, consultar a yum que paquete lo contiene contiene:
$ yum whatprovides '*/bin/systool'
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.brisanet.com.br
* extras: centos.brisanet.com.br
* updates: centos.brisanet.com.br
sysfsutils-2.1.0-16.el7.x86_64 : Utilities for interfacing with sysfs
Repo : base
Matched from:
Filename : /usr/bin/systool
sysfsutils-2.1.0-16.el7.x86_64 : Utilities for interfacing with sysfs
Repo : @base
Matched from:
Filename : /usr/bin/systool
. WWN de una HBA:
$ cat /sys/class/fc_host/host3/port_name
0x2100001b3280c585
ó
$ systool -c fc_host -v host4
Class = "fc_host"
Class Device = "host4"
Class Device path = "/sys/class/fc_host/host4"
fabric_name = "0x10270085f8d025"
issue_lip = <store method only>
node_name = "0x2000001b3280d482"
port_id = "0x142200"
port_name = "0x2100001b3280d482"
port_state = "Online"
port_type = "NPort (fabric via point-to-point)"
speed = "4 Gbit"
supported_classes = "Class 3"
symbolic_name = "QLE2460 FW:v4.03.02 DVR:v8.02.00-k5-rhel5.2-04"
system_hostname = ""
tgtid_bind_type = "wwpn (World Wide Port Name)"
uevent = <store method only>
Device = "host4"
Device path = "/sys/devices/pci0000:00/0000:00:02.0/0000:1a:00.0/0000:1b:01.0/0000:24:00.0/host4"
fw_dump =
nvram = "ISP "
optrom_ctl = <store method only>
optrom =
sfp = ""
uevent = <store method only>
vpd = "4"
Driver Multipath
Verficar que no es te instalado:
$ rpm -qa |grep multipath
$
Buscar en los repos:
# yum serach multipath
Loaded plugins: fastestmirror, versionlock
Loading mirror speeds from cached hostfile
* base: centos.brnet.net.br
* extras: centos.brnet.net.br
* updates: centos.brnet.net.br
================================================= N/S Matched: multipath =================================================
device-mapper-multipath.x86_64 : Tools to manage multipath devices using device-mapper
device-mapper-multipath-libs.i686 : The device-mapper-multipath modules and shared library
device-mapper-multipath-libs.x86_64 : The device-mapper-multipath modules and shared library
Name and summary matches only, use "search all" for everything.
Instalar:
# yum install multipath -y
Verificar:
$ rpm -qa |grep multipath
device-mapper-multipath-0.4.9-72.el6_5.3.x86_64
device-mapper-multipath-libs-0.4.9-72.el6_5.3.x86_64
. Configurar driver para que la conexión con un IBM V7000:
# vi /etc/multipath.conf
devices {
# SVC
device {
vendor "IBM"
product "2145"
path_grouping_policy group_by_prio
prio_callout "/sbin/mpath_prio_alua /dev/%n"
}
}
Nota: Estas lineas son provistas por el fabricante del storage.
. Configurar driver para que la conexión con un IBM ds3400/3500: No testeado!
device {
vendor "IBM"
product "1746*"
prio_callout "/sbin/mpath_prio_rdac /dev/%n"
path_grouping_policy group_by_prio
failback immediate
path_checker rdac
hardware_handler "1 rdac"
}
. Listar discos externos: SAN
# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 63 Jun 3 12:27 control
brw-rw---- 1 root disk 253, 9 Jun 3 15:27 mpath1
brw-rw---- 1 root disk 253, 17 Jun 3 15:27 mpath10
brw-rw---- 1 root disk 253, 18 Jun 3 15:27 mpath11
brw-rw---- 1 root disk 253, 19 Jun 3 15:27 mpath12
brw-rw---- 1 root disk 253, 24 Jun 3 15:27 mpath13
ó
# multipath -ll
mpath1 (360050768028100502800000000000106) dm-16 IBM,2145
[size=50G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=50][active]
\_ 3:0:4:8 sdbi 67:192 [active][ready]
\_ 3:0:6:8 sdfg 130:32 [active][ready]
\_ round-robin 0 [prio=10][enabled]
\_ 3:0:5:8 sddh 70:240 [active][ready]
\_ 3:0:3:8 sdj 8:144 [active][ready]
....
. Listar discos locales:
$ ls -l /dev/sd*
brw-rw----. 1 root disk 8, 0 Sep 3 14:18 /dev/sda
brw-rw----. 1 root disk 8, 1 Sep 3 14:18 /dev/sda1
brw-rw----. 1 root disk 8, 2 Sep 3 14:18 /dev/sda2
brw-rw----. 1 root disk 8, 16 Sep 3 14:18 /dev/sdb
brw-rw----. 1 root disk 8, 17 Sep 3 14:18 /dev/sdb1
ó
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
sda 8:0 0 30G 0 disk
+-sda1 8:1 0 500M 0 part /boot
+-sda2 8:2 0 29.5G 0 part
+-vgroot-lvroot (dm-0) 253:0 0 2G 0 lvm /
+-vgroot-lvswap (dm-1) 253:1 0 4G 0 lvm [SWAP]
+-vgroot-lvopt (dm-3) 253:3 0 1G 0 lvm /opt
+-vgroot-lvtmp (dm-4) 253:4 0 2G 0 lvm /tmp
+-vgroot-lvhome (dm-5) 253:5 0 512M 0 lvm /home
+-vgroot-lvusr (dm-6) 253:6 0 4G 0 lvm /usr
+-vgroot-lvvar (dm-7) 253:7 0 3G 0 lvm /var
sdb 8:16 0 20G 0 disk
+-sdb1 8:17 0 20G 0 part
+-vgsiges-lvsoftware (dm-2) 253:2 0 20G 0 lvm /software/
Si no está instalada la utilidad lsblk:
$ yum search util-linux
Loaded plugins: rhnplugin, security
This system is receiving updates from RHN Classic or RHN Satellite.
================================================== Matched: util-linux ===================================================
util-linux.x86_64 : A collection of basic system utilities.
Instalar:
$ yum install util-linux.x86_64
Administrar repos
/etc/yum.repos.d/ -->> Directorio de repositorios.
.repo -->> Extensión de los archivos.
Campos:
Repository ID
Name
Baseurl
Enabled
Donde,
Repository ID= One word unique repository ID (example: [examplerepo])
Name= Human readable name of the repository (example: name=Example Repository)
Baseurl= URL to the repodata directory.(example: baseurl=http://mirror.cisp.com/CentOS/6/os/i386/)
Enabled= Enable repository when performing updates and installs (example: enabled=1)
Gpgcheck= Enable/disable GPG signature checking (example: gpgcheck=1)
Gpgkey= URL to the GPG key (example: gpgkey=http://mirror.cisp.com/CentOS/6/os/i386/RPM-GPG-KEY-CentOS-6)
Exclude - List of the packages to exclude (example: exclude=httpd,mod_ssl)
Includepkgs - List of the packages to include (example: include=kernel)
Ejemplo:
# vi /etc/yum.repos.d/example.repo
[examplerepo]
name=Example Repository
baseurl=http://mirror.cisp.com/CentOS/6/os/i386/
enabled=1
gpgcheck=1
gpgkey=http://mirror.cisp.com/CentOS/6/os/i386/RPM-GPG-KEY-CentOS-6
Ejemplo DVD:
# vi /etc/yum.repos.d/centosdvdiso.repo
[centosdvdiso]
name=CentOS DVD ISO
baseurl=file:///mnt
enabled=1
gpgcheck=1
gpgkey=file:///mnt/RPM-GPG-KEY-CentOS-6
Agregar PVs a un VG existente
1. Verificar tamaño del FS antes de agradar:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vgroot-lvroot
2.0G 371M 1.6G 20% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 485M 54M 406M 12% /boot
/dev/mapper/vgroot-lvhome
504M 39M 441M 8% /home
/dev/mapper/vgroot-lvopt
1008M 34M 924M 4% /opt
/dev/mapper/vgroot-lvtmp
2.0G 68M 1.9G 4% /tmp
/dev/mapper/vgroot-lvusr
4.0G 1.3G 2.6G 33% /usr
/dev/mapper/vgroot-lvvar
3.0G 1017M 1.9G 36% /var
/dev/mapper/vgdatos-lvdatos
20G 383M 19G 1% /datos
2. Reconocer nuevo disco:
2.1 Obtener la diferencia de discos antes del rescan:
$ ls -l /sys/class/block/sd* > blockdisk.antes
2.2 Rescan de nuevos discos:
#echo "- - -" > /sys/class/scsi_host/hostX/scan
2.3 Comparar diferencia:
$ ls -l /sys/class/block/sd* > blockdisk.despues
$ diff blockdisk.antes blockdisk.despues
3. Crear partición:
#fdisk /dev/sdc --> Rocardar que LVM en linux arma los pvs en base a la partición.
n
p
Enter
Enter
t
8e
w
4. Crear PV:
# pvcreate -tv /dev/sdc1
# pvcreate /dev/sdc1
Nota: -tv lo hace en modo test y con output de info.
5. Extender VG:
# vgextend vgdatos /dev/sdc1
5.1 Verifcar
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
sda 8:0 0 30G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 29.5G 0 part
├─vgroot-lvroot (dm-0) 253:0 0 2G 0 lvm /
├─vgroot-lvswap (dm-1) 253:1 0 4G 0 lvm [SWAP]
├─vgroot-lvopt (dm-3) 253:3 0 1G 0 lvm /opt
├─vgroot-lvtmp (dm-4) 253:4 0 2G 0 lvm /tmp
├─vgroot-lvhome (dm-5) 253:5 0 512M 0 lvm /home
├─vgroot-lvusr (dm-6) 253:6 0 4G 0 lvm /usr
└─vgroot-lvvar (dm-7) 253:7 0 3G 0 lvm /var
sdb 8:16 0 20G 0 disk
└─sdb1 8:17 0 20G 0 part
└─vgdatos-lvdatos (dm-2) 253:2 0 20G 0 lvm /datos
sdc 8:32 0 40G 0 disk
└─sdc1 8:33 0 40G 0 part
6. Extender el logical volumen:
# lvextend -rl 100%VG /dev/mapper/vgdatos-lvdatos
7. Verificar aumento del tamaño:
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vgroot-lvroot
2.0G 371M 1.6G 20% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 485M 54M 406M 12% /boot
/dev/mapper/vgroot-lvhome
504M 39M 441M 8% /home
/dev/mapper/vgroot-lvopt
1008M 34M 924M 4% /opt
/dev/mapper/vgroot-lvtmp
2.0G 68M 1.9G 4% /tmp
/dev/mapper/vgroot-lvusr
4.0G 1.3G 2.6G 33% /usr
/dev/mapper/vgroot-lvvar
3.0G 1017M 1.9G 36% /var
/dev/mapper/vgdatos-lvdatos
60G 383M 56G 1% /datos
Howto VG create RHEL 7.1
Listar discos configurados:
mpathb (3600507680281005028000000000004ed) dm-1 IBM,2145
size=60G features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=0 status=active
| |- 1:0:4:0 sdi 8:128 active undef running
| |- 0:0:5:0 sdf 8:80 active undef running
| |- 1:0:5:0 sdj 8:144 active undef running
| `- 0:0:4:0 sde 8:64 active undef running
`-+- policy='round-robin 0' prio=0 status=enabled
|- 0:0:2:0 sdc 8:32 active undef running
|- 1:0:2:0 sdg 8:96 active undef running
|- 0:0:3:0 sdd 8:48 active undef running
`- 1:0:3:0 sdh 8:112 active undef running
Listar PV existentes:
[root@localhost ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/mapper/mpathap3 VolGroup lvm2 a-- 59.50g 0
Crear el PV con disco :
[root@localhost ~]# pvcreate /dev/mapper/mpathb
Physical volume "/dev/mapper/mpathb" successfully created
Divisar nuevamente:
[root@localhost ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/mapper/mpathap3 VolGroup lvm2 a-- 59.50g 0
/dev/mapper/mpathb lvm2 a-- 60.00g 60.00g
Crear VG en modo testing:
[root@localhost ~]# vgcreate -tv vgdatos /dev/mapper/mpathb
TEST MODE: Metadata will NOT be updated and volumes will not be (de)activated.
Wiping cache of LVM-capable devices
Wiping cache of LVM-capable devices
Adding physical volume '/dev/mapper/mpathb' to volume group 'vgdatos'
Test mode: Skipping archiving of volume group.
Test mode: Skipping backup of volume group.
Volume group "vgdatos" successfully created
Test mode: Wiping internal cache
Wiping internal VG cache
Nota: Esto "emula" la creación para ver si todo anda bien (-t).
Crear VG efectivamente:
[root@localhost ~]# vgcreate -v vgdatos /dev/mapper/mpathb
Wiping cache of LVM-capable devices
Wiping cache of LVM-capable devices
Adding physical volume '/dev/mapper/mpathb' to volume group 'vgdatos'
Archiving volume group "vgdatos" metadata (seqno 0).
Creating volume group backup "/etc/lvm/backup/vgdatos" (seqno 1).
Volume group "vgdatos" successfully created
Listar el vg creado:
[root@localhost ~]# vgdisplay |grep -A 10 datos
VG Name vgdatos
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Creo un nuevo Logical Volume en modo testing:
[root@localhost ~]# lvcreate -tv -l 100%FREE -n lvdatos vgdatos
TEST MODE: Metadata will NOT be updated and volumes will not be (de)activated.
Setting logging type to disk
Finding volume group "vgdatos"
Test mode: Skipping archiving of volume group.
Creating logical volume lvdatos
Test mode: Skipping backup of volume group.
Test mode: Skipping activation and zeroing.
Logical volume "lvdatos" created
Test mode: Wiping internal cache
Wiping internal VG cache
Creo un nuevo Logical Volume:
[root@localhost ~]# lvcreate -v -l 100%FREE -n lvdatos vgdatos
Verifico:
[root@localhost ~]# lvdisplay |grep -A 8 datos
LV Path /dev/vgdatos/lvdatos
LV Name lvdatos
VG Name vgdatos
LV UUID ht523y-6XM7-pU2J-fLnm-hEOF-R9QM-TCFU8c
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-05-22 12:34:19 -0300
LV Status available
# open 0
LV Size 60.00 GiB
Current LE 15359
Segments 1
Crear File Systema del tipo ext3:
[root@localhost ~]# mkfs.ext3 /dev/mapper/vgdatos-lvdatos
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
3932160 inodes, 15727616 blocks
786380 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
480 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 32 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
Creación de punto de montaje y inicio atomático:
[root@localhost /]# cd /
[root@localhost /]# mkdir software
[root@localhost /]# mount /dev/mapper/vgdatos-lvdatos /datos
Listar el UUID para modidcat el fstab:
[root@localhost /]# blkid
UUID="81c20b10-42e6-4708-8b9e-e983f92f9515"
[root@localhost /]# vi /etc/fstab
UUID="81c20b10-42e6-4708-8b9e-e983f92f9515" /software ext3 rw 0 0
[root@localhost /]# umount /srv/tomcat
[root@localhost /]# mount -a