Sun-microsystems SUN STOREDGETM 5310 NAS Manual de usuario descargar pdf (Pagina 334)

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6-18 Sun StorEdge 5310 NAS Troubleshooting Guide • December 2004

the "-c" option, the checkpointed file source will be restored to the destination. If the

destination is omitted then system will try to restore to the original (non-

checkpointed) path.

For example:

cp -c /v6.chkpnt/ckpt1/docs/sample.doc

will restore to:

/v6/docs/sample.doc

The cp command is also available as part of the chkpnt command line operation.

The syntax is identical except that the command is prefaced with chkpnt, and the "-

c" option is not required:

chkpnt cp source [destination]

The "-c" option is not required when cp is part of the chkpnt command because the

chkpnt prefix conveys the operation's context: to restore a checkpointed object to the

live filesystem.

While a checkpoint file restore operation is underway, the file is locked for the

duration of the operation and clients can perform no other action against that file.

Any attempt to access the file during the restore operation will result in an error. For

example, when trying to access the file from a UNIX client, users may see the

following:

$ cat sample.doc > /dev/null

cat: sample.doc: Input/Output error

Similarly, a Windows NT user may see one of the errors shown in Figure 6-12 or

Figure 6-13 when attempting to access a file when a checkpoint restore operation is

underway against that same file.

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