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ADRIAN OBREGON

Identificación de un dato
dañado
-El comando zpool status avisa únicamente de la
presencia de daños.
Cada error indica solamente que ha habido un error en un
determinado momento. Eso no significa que cada error siga estando
en el sistema. Determinadas interrupciones temporales del suministro
pueden provocar daños en los datos que se reparan automáticamente
cuando finaliza dicha interrupción. Se garantiza la ejecución completa
de un proceso de limpieza de la agrupación para examinar cada
bloque activo de la agrupación, con lo cual el registro de errores se
reinicia cuando concluye la limpieza. Si considera que ya no hay
errores y no quiere esperar a que finalice la limpieza, reinicie todos los
errores de la agrupación mediante el comando zpool online.
errors: 8 data errors, use '-v' for a list
 Para reducir al mínimo las posibilidades de que los datos sufran
daños, ZFS utiliza sumas de comprobación, redundancia y datos
que se reparan a sí mismos.
 cuando una agrupación está en estado "degraded" o si se combina
una improbable serie de eventos para dañar varias copias de
determinados datos.
 Las medidas requeridas dependen del tipo de datos dañados y su
valor relativo.
Metadatos de agrupación: para abrir una agrupación y acceder a
conjuntos de datos, ZFS debe analizar cierta cantidad de datos. Si se
dañan estos datos, quedará inaccesible toda la agrupación o partes de
la jerarquía del conjuntos de datos.
Datos de objeto: el daño afecta a un determinado archivo o directorio.
Ello puede hacer que no sea posible acceder a una parte del archivo o
directorio, o causar la interrupción del objeto.
Los datos se verifican durante el funcionamiento normal y durante el
proceso de limpieza.
REPARACION

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Identificar y reparar datos dañados en ZFS

  • 2.  Identificación de un dato dañado -El comando zpool status avisa únicamente de la presencia de daños. Cada error indica solamente que ha habido un error en un determinado momento. Eso no significa que cada error siga estando en el sistema. Determinadas interrupciones temporales del suministro pueden provocar daños en los datos que se reparan automáticamente cuando finaliza dicha interrupción. Se garantiza la ejecución completa de un proceso de limpieza de la agrupación para examinar cada bloque activo de la agrupación, con lo cual el registro de errores se reinicia cuando concluye la limpieza. Si considera que ya no hay errores y no quiere esperar a que finalice la limpieza, reinicie todos los errores de la agrupación mediante el comando zpool online. errors: 8 data errors, use '-v' for a list
  • 3.  Para reducir al mínimo las posibilidades de que los datos sufran daños, ZFS utiliza sumas de comprobación, redundancia y datos que se reparan a sí mismos.  cuando una agrupación está en estado "degraded" o si se combina una improbable serie de eventos para dañar varias copias de determinados datos.  Las medidas requeridas dependen del tipo de datos dañados y su valor relativo. Metadatos de agrupación: para abrir una agrupación y acceder a conjuntos de datos, ZFS debe analizar cierta cantidad de datos. Si se dañan estos datos, quedará inaccesible toda la agrupación o partes de la jerarquía del conjuntos de datos. Datos de objeto: el daño afecta a un determinado archivo o directorio. Ello puede hacer que no sea posible acceder a una parte del archivo o directorio, o causar la interrupción del objeto. Los datos se verifican durante el funcionamiento normal y durante el proceso de limpieza. REPARACION