gfarm2fs - Online in the Cloud

This is the command gfarm2fs that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


gfarm2fs - mount a Gfarm file system

SYNOPSIS


gfarm2fs mount_point [ options ]

DESCRIPTION


gfarm2fs mounts the Gfarm file system at the specified mount point.

GENERAL OPTIONS


-h display a list of command options.

-V display version.

-o opt,[opt...]
specify mount options.

GFARM2FS OPTIONS


-o syslog=facility
specify syslog facility. default is local0.

-o loglevel=priority
specify syslog priority level. default is notice.

-E T specify the timeout of attribute cache. default is 1.0 seconds.

-o gfs_stat_timeout=T
same as -E option

-o ncopy=N
specify the number of copies automatically created when a file is created. default
is 0, which means disabling automatic replication mechanism.

-o copy_limit=N
specify the maximum number of concurrent copy creations. this is effective if
automatic replication is enabled. default is 0.

-o disable_genuine_nlink
uses faked st_nlink (32000) of struct stat for directories.

-o auto_uid_min=N
specify the minimum UID automatically assigned.

-o auto_uid_max=N
specify the maximum UID automatically assigned.

-o auto_gid_min=N
specify the minimum GID automatically assigned.

-o auto_gid_max=N
specify the maximum GID automatically assigned.

FUSE OPTIONS


see gfarm2fs -h

ENVIRONMENT VARIABLE


GFARM_CONFIG_FILE
specifies the Gfarm configuration file.

NOTES


When there is not the same local account name as the Gfarm global user name, a temporal
UID is assigned between auto_uid_min and auto_uid_max. When there is not the same local
group name as the Gfarm global group name, a temporal GID is assigned between auto_gid_min
and auto_gid_max.

When a temporal UID/GID cannot be assigned, setfacl(1) fails with EPERM.

SECURITY NOTES


When untrusted users are registered in the gfarmroot group or gfarm_root.{user,group}
extended attributes of any files or directories, a Security Hole exists on the mount point
of gfarm2fs with "-o suid,allow_other" option executed by root (even if either "-o ro"
option or "-o default_permissions" option is also specified). Therefore both "-o
suid,allow_other" option and gfarm_root.{user,group} extended attributes should not be
used.

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