Red Hat GLOBAL FILE SYSTEM 5.2 Guida di Installazione Scaricare il pdf (Pagina 52)

di_entries = 0

no_formal_ino = 0

no_addr = 0

di_eattr = 0

di_reserved =

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00

13. Repairing a File System

When nodes fail with the file system mounted, file system journaling allows fast recovery.

However, if a storage device loses power or is physically disconnected, file system corruption

may occur. (Journaling cannot be used to recover from storage subsystem failures.) When that

type of corruption occurs, you can recover the GFS file system by using the gfs_fsck

command.

Caution

The gfs_fsck command must be run only on a file system that is unmounted

from all nodes.

Note

The gfs_fsck command has changed from previous releases of Red Hat GFS in

the following ways:

• You can no longer set the interactive mode with Ctrl-C. Pressing Ctrl-C now

cancels the gfs_fsck command. Do not press Ctrl-C unless you want to

cancel the command.

• You can increase the level of verbosity by using the -v flag. Adding a second

-v flag increases the level again.

• You can decrease the level of verbosity by using the -q flag. Adding a second

-q flag decreases the level again.

• The -n option opens a file system as read-only and answers no to any queries

automatically. The option provides a way of trying the command to reveal

errors without actually allowing the gfs_fsck command to take effect.

Refer to the gfs_fsck man page, gfs_fsck(8), for additional information about

Chapter 3. Managing GFS

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Red Hat GLOBAL FILE SYSTEM 5.2 Guida di Installazione Pagina 52