Bacula no utilizará 2 dispositivos de cinta simultáneamente. (Busque # - # - # para el TL; DR)
Un poco de historia, tal vez.
En el proceso de tratar de obtener una solución de copia de seguridad de trabajo decente (hacer copias de seguridad> 20 TB no es barato ni fácil) $dayjob
, compramos un montón de cosas para que funcione.
En primer lugar, hay un cambiador automático Spectra Logic T50e, 40 ranuras de bondad LTO5, y ese robot tiene un par de unidades IBM HH5 Ultrium LTO5, conectadas a través de FibreChannel Arbitrated Loop a nuestro servidor de respaldo.
Está el servidor de respaldo. Un Dell R715 con 2 procesadores AMD 62xx de 16 núcleos y 32 GB de RAM. Sabroso. Ese servidor tiene 2 tarjetas Emulex FCe-12000E y una NIC Intel X520-SR de doble puerto 10GE.
También nos vendieron Commvault Backup (no NDMP).
Aquí es donde se pone realmente complicado.
Spectra Logic y Commvault enviaron ingenieros respectivos, que configuraron la biblioteca y el software. Commvault funcionaba bien, en la medida en que el controlador funcionaba bien. El servidor Dell tiene un servidor Ubuntu 12.04, ejecuta MediaAgent para CommVault y monta nuestro BlueArc NAS como NFS en algunos puntos de montaje, como /home
, y algunas cosas más /mnt
.
Al retroceder desde los puntos de montaje NFS, estábamos viendo ~ = 290GB/hr
rendimiento. Eso es una mierda, teniendo en cuenta que tenemos 20 TB para superar, en una ventana de respaldo de <48 horas. El máximo nominal en el BlueArc es 700MB/s
( 2460GB/hr
), la velocidad máxima de escritura nominal en los dispositivos de cinta es de 140 MB / s, por unidad, por lo que es 492GB/hr
(o el doble, para el rendimiento total).
Entonces, el siguiente paso fue comparar el rendimiento de NFS con IOzone, y resulta que obtenemos un rendimiento de escritura épico (en más de 20 hilos), y es como escribir de 1.5-2.5TB / hr, pero el rendimiento de lectura no tiene esperanzas. Nunca podría obtener más de 343 GB / h como máximo. Así que supongamos que 343GB/hr
es un máximo teórico para el rendimiento de lectura en el NAS, entonces, en teoría, deberíamos poder obtener ese rendimiento de a) CommVault yb) cualquier otro agente de respaldo.
No es el caso. Parece que Commvault solo me da 200-250GB/hr
rendimiento y, por experimentación, instalé Bacula para ver cuál es el estado del juego. Si, por ejemplo, Bacula ofreciera un rendimiento y velocidades consistentemente mejores que Commvault, entonces podríamos decir"**$.$ Refunds Plz $.$**"
# - # - #
Por desgracia, encontré un problema diferente con Bacula. Commvault parece muy feliz de leer desde una parte del punto de montaje con un subproceso y transmitirlo a un dispositivo de cinta, mientras lee desde otro directorio con el otro subproceso y escribe en la segunda unidad en el cambiador automático.
Por mi vida no puedo hacer que Bacula monte y escriba en dos unidades de cinta simultáneamente .
Cosas que he probado:
- Configuración
Maximum Concurrent Jobs = 20
en el Director, archivos y demonios de almacenamiento - Establecer
Prefer Mounted Volumes = no
en la definición de trabajo - Configuración de múltiples dispositivos en el recurso Autochanger.
La documentación parece estar centrada en una sola unidad, y nos sentimos un poco como si hubiéramos atado un cohete a un hámster, con este. La mayoría de las configuraciones de ejemplo de Bacula son para unidades DDS4, intercambio manual de cintas y sistemas FreeBSD o IRIX.
Probablemente debería agregar que no estoy demasiado molesto si esto no es posible, pero me sorprendería. Básicamente quiero usar Bacula como prueba para adherir a los proveedores de software que son demasiado caros;)
Leí en alguna parte que @KyleBrandt ha hecho algo similar con una solución moderna de cinta ...
Archivos de configuración: bacula-dir.conf
#
# Default Bacula Director Configuration file
Director { # define myself
Name = backuphost-1-dir
DIRport = 9101 # where we listen for UA connections
QueryFile = "/etc/bacula/scripts/query.sql"
WorkingDirectory = "/var/lib/bacula"
PidDirectory = "/var/run/bacula"
Maximum Concurrent Jobs = 20
Password = "yourekiddingright" # Console password
Messages = Daemon
DirAddress = 0.0.0.0
#DirAddress = 127.0.0.1
}
JobDefs {
Name = "DefaultFileJob"
Type = Backup
Level = Incremental
Client = backuphost-1-fd
FileSet = "Full Set"
Schedule = "WeeklyCycle"
Storage = File
Messages = Standard
Pool = File
Priority = 10
Write Bootstrap = "/var/lib/bacula/%c.bsr"
}
JobDefs {
Name = "DefaultTapeJob"
Type = Backup
Level = Incremental
Client = backuphost-1-fd
FileSet = "Full Set"
Schedule = "WeeklyCycle"
Storage = "SpectraLogic"
Messages = Standard
Pool = AllTapes
Priority = 10
Write Bootstrap = "/var/lib/bacula/%c.bsr"
Prefer Mounted Volumes = no
}
#
# Define the main nightly save backup job
# By default, this job will back up to disk in /nonexistant/path/to/file/archive/dir
Job {
Name = "BackupClient1"
JobDefs = "DefaultFileJob"
}
Job {
Name = "BackupThisVolume"
JobDefs = "DefaultTapeJob"
FileSet = "SpecialVolume"
}
#Job {
# Name = "BackupClient2"
# Client = backuphost-12-fd
# JobDefs = "DefaultJob"
#}
# Backup the catalog database (after the nightly save)
Job {
Name = "BackupCatalog"
JobDefs = "DefaultFileJob"
Level = Full
FileSet="Catalog"
Schedule = "WeeklyCycleAfterBackup"
# This creates an ASCII copy of the catalog
# Arguments to make_catalog_backup.pl are:
# make_catalog_backup.pl <catalog-name>
RunBeforeJob = "/etc/bacula/scripts/make_catalog_backup.pl MyCatalog"
# This deletes the copy of the catalog
RunAfterJob = "/etc/bacula/scripts/delete_catalog_backup"
Write Bootstrap = "/var/lib/bacula/%n.bsr"
Priority = 11 # run after main backup
}
#
# Standard Restore template, to be changed by Console program
# Only one such job is needed for all Jobs/Clients/Storage ...
#
Job {
Name = "RestoreFiles"
Type = Restore
Client=backuphost-1-fd
FileSet="Full Set"
Storage = File
Pool = Default
Messages = Standard
Where = /srv/bacula/restore
}
FileSet {
Name = "SpecialVolume"
Include {
Options {
signature = MD5
}
File = /mnt/SpecialVolume
}
Exclude {
File = /var/lib/bacula
File = /nonexistant/path/to/file/archive/dir
File = /proc
File = /tmp
File = /.journal
File = /.fsck
}
}
# List of files to be backed up
FileSet {
Name = "Full Set"
Include {
Options {
signature = MD5
}
File = /usr/sbin
}
Exclude {
File = /var/lib/bacula
File = /nonexistant/path/to/file/archive/dir
File = /proc
File = /tmp
File = /.journal
File = /.fsck
}
}
Schedule {
Name = "WeeklyCycle"
Run = Full 1st sun at 23:05
Run = Differential 2nd-5th sun at 23:05
Run = Incremental mon-sat at 23:05
}
# This schedule does the catalog. It starts after the WeeklyCycle
Schedule {
Name = "WeeklyCycleAfterBackup"
Run = Full sun-sat at 23:10
}
# This is the backup of the catalog
FileSet {
Name = "Catalog"
Include {
Options {
signature = MD5
}
File = "/var/lib/bacula/bacula.sql"
}
}
# Client (File Services) to backup
Client {
Name = backuphost-1-fd
Address = localhost
FDPort = 9102
Catalog = MyCatalog
Password = "surelyyourejoking" # password for FileDaemon
File Retention = 30 days # 30 days
Job Retention = 6 months # six months
AutoPrune = yes # Prune expired Jobs/Files
}
#
# Second Client (File Services) to backup
# You should change Name, Address, and Password before using
#
#Client {
# Name = backuphost-12-fd
# Address = localhost2
# FDPort = 9102
# Catalog = MyCatalog
# Password = "i'mnotjokinganddontcallmeshirley" # password for FileDaemon 2
# File Retention = 30 days # 30 days
# Job Retention = 6 months # six months
# AutoPrune = yes # Prune expired Jobs/Files
#}
# Definition of file storage device
Storage {
Name = File
# Do not use "localhost" here
Address = localhost # N.B. Use a fully qualified name here
SDPort = 9103
Password = "lalalalala"
Device = FileStorage
Media Type = File
}
Storage {
Name = "SpectraLogic"
Address = localhost
SDPort = 9103
Password = "linkedinmakethebestpasswords"
Device = Drive-1
Device = Drive-2
Media Type = LTO5
Autochanger = yes
}
# Generic catalog service
Catalog {
Name = MyCatalog
# Uncomment the following line if you want the dbi driver
# dbdriver = "dbi:sqlite3"; dbaddress = 127.0.0.1; dbport =
dbname = "bacula"; DB Address = ""; dbuser = "bacula"; dbpassword = ""
}
# Reasonable message delivery -- send most everything to email address
# and to the console
Messages {
Name = Standard
mailcommand = "/usr/lib/bacula/bsmtp -h localhost -f \"\(Bacula\) \<%r\>\" -s \"Bacula: %t %e of %c %l\" %r"
operatorcommand = "/usr/lib/bacula/bsmtp -h localhost -f \"\(Bacula\) \<%r\>\" -s \"Bacula: Intervention needed for %j\" %r"
mail = root@localhost = all, !skipped
operator = root@localhost = mount
console = all, !skipped, !saved
#
# WARNING! the following will create a file that you must cycle from
# time to time as it will grow indefinitely. However, it will
# also keep all your messages if they scroll off the console.
#
append = "/var/lib/bacula/log" = all, !skipped
catalog = all
}
#
# Message delivery for daemon messages (no job).
Messages {
Name = Daemon
mailcommand = "/usr/lib/bacula/bsmtp -h localhost -f \"\(Bacula\) \<%r\>\" -s \"Bacula daemon message\" %r"
mail = root@localhost = all, !skipped
console = all, !skipped, !saved
append = "/var/lib/bacula/log" = all, !skipped
}
# Default pool definition
Pool {
Name = Default
Pool Type = Backup
Recycle = yes # Bacula can automatically recycle Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 365 days # one year
}
# File Pool definition
Pool {
Name = File
Pool Type = Backup
Recycle = yes # Bacula can automatically recycle Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 365 days # one year
Maximum Volume Bytes = 50G # Limit Volume size to something reasonable
Maximum Volumes = 100 # Limit number of Volumes in Pool
}
Pool {
Name = AllTapes
Pool Type = Backup
Recycle = yes
AutoPrune = yes # Prune expired volumes
Volume Retention = 31 days # one Moth
}
# Scratch pool definition
Pool {
Name = Scratch
Pool Type = Backup
}
#
# Restricted console used by tray-monitor to get the status of the director
#
Console {
Name = backuphost-1-mon
Password = "LastFMalsostorePasswordsLikeThis"
CommandACL = status, .status
}
bacula-sd.conf
#
# Default Bacula Storage Daemon Configuration file
#
Storage { # definition of myself
Name = backuphost-1-sd
SDPort = 9103 # Director's port
WorkingDirectory = "/var/lib/bacula"
Pid Directory = "/var/run/bacula"
Maximum Concurrent Jobs = 20
SDAddress = 0.0.0.0
# SDAddress = 127.0.0.1
}
#
# List Directors who are permitted to contact Storage daemon
#
Director {
Name = backuphost-1-dir
Password = "passwordslinplaintext"
}
#
# Restricted Director, used by tray-monitor to get the
# status of the storage daemon
#
Director {
Name = backuphost-1-mon
Password = "totalinsecurityabound"
Monitor = yes
}
Device {
Name = FileStorage
Media Type = File
Archive Device = /srv/bacula/archive
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = no;
AlwaysOpen = no;
}
Autochanger {
Name = SpectraLogic
Device = Drive-1
Device = Drive-2
Changer Command = "/etc/bacula/scripts/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg4
}
Device {
Name = Drive-1
Drive Index = 0
Archive Device = /dev/nst0
Changer Device = /dev/sg4
Media Type = LTO5
AutoChanger = yes
RemovableMedia = yes;
AutomaticMount = yes;
AlwaysOpen = yes;
RandomAccess = no;
LabelMedia = yes
}
Device {
Name = Drive-2
Drive Index = 1
Archive Device = /dev/nst1
Changer Device = /dev/sg4
Media Type = LTO5
AutoChanger = yes
RemovableMedia = yes;
AutomaticMount = yes;
AlwaysOpen = yes;
RandomAccess = no;
LabelMedia = yes
}
#
# Send all messages to the Director,
# mount messages also are sent to the email address
#
Messages {
Name = Standard
director = backuphost-1-dir = all
}
bacula-fd.conf
#
# Default Bacula File Daemon Configuration file
#
#
# List Directors who are permitted to contact this File daemon
#
Director {
Name = backuphost-1-dir
Password = "hahahahahaha"
}
#
# Restricted Director, used by tray-monitor to get the
# status of the file daemon
#
Director {
Name = backuphost-1-mon
Password = "hohohohohho"
Monitor = yes
}
#
# "Global" File daemon configuration specifications
#
FileDaemon { # this is me
Name = backuphost-1-fd
FDport = 9102 # where we listen for the director
WorkingDirectory = /var/lib/bacula
Pid Directory = /var/run/bacula
Maximum Concurrent Jobs = 20
#FDAddress = 127.0.0.1
FDAddress = 0.0.0.0
}
# Send all messages except skipped files back to Director
Messages {
Name = Standard
director = backuphost-1-dir = all, !skipped, !restored
}