1.5. Replacement Functions for gfs2_tool in Red Hat Enterprise Linux 7 The gfs2_tool command is not supported in Red Hat Enterprise Linux 7. Table 1.2, "gfs2_tool Equivalent Functions in Red Hat Enterprise Linux 7" summarizes the equivalent functionality for the gfs2_tool command options in Red Hat Enterprise Linux 7. Table 1.2. gfs2_tool Equivalent Functions in Red Hat Enterprise Linux 7 gfs2_tool option Replacement Functionality clearflag Flag File1 File2 ... Clear an attribute flag on a file Linux standard chattr command freeze mountpoint Freeze (quiesce) a GFS2 file system Linux standard fsfreeze -f mountpoint command gettune mountpoint Print out current values of tuning parameters For many cases, has been replaced by mount ( get mount options ). Other tuning parameters may be fetched from the respective sysfs files: /sys/fs/gfs2/dm-3/tune/* . journals mountpoint Print out information on the journals in a GFS2 file system Information about journals can be fetched with gfs2_edit -p journals device . You can run this command when the file system is mounted. lockdump mountpoint Print out information about the locks this machine holds for a given file system The GFS2 lock information may be obtained by mounting debugfs , then executing a command like such as the following: sb device proto [ newvalue ] View (and possibly replace) the locking protocol To fetch the current value of the locking protocol, you can use the following command: To replace the current value of the locking protocol, you can use the following command: sb device table [ newvalue ] View (and possibly replace) the name of the locking table To fetch the current value of the name of the locking table, you can use the following command: To replace the current value of the name of the locking table, you can use the following command: sb device ondisk [ newvalue ] View (and possibly replace) the ondisk format number Do not perform this task. sb device multihost [ newvalue ] View (and possibly replace) the multihost format number Do not perform this task. sb device uuid [ newvalue ] View (and possibly replace) the uuid value To fetch the current value of the uuid , you can use the following command: To replace the current value of the uuid , you can use the following command: sb device all Print out the GFS2 superblock setflag Flag File1 File2 ... Sets an attribute flag on a file Linux standard chattr command settune mountpoint parameter newvalue Set the value of a tuning parameter For many cases, has been replaced by mount ( -o remount with options). Other tuning parameters may be set by the respective sysfs files: /sys/fs/gfs2/ cluster_name:file_system_name /tune/* unfreeze mountpoint Unfreeze a GFS2 file system Linux standard fsfreeze -unfreeze mountpoint command version Displays version of the gfs2_tool command N/A withdraw mountpoint Cause GFS2 to abnormally shutdown a given file system

Commands:
gfs2_edit -p journals /dev/clus_vg/lv1 Block #Journal Status: of 2620416 (0x27fc00) -------------------- Journal List -------------------- journal0: 0x14 128MB clean. journal1: 0x805b 128MB clean. ------------------------------------------------------
cat /sys/kernel/debug/gfs2/ clustername:file_system_name /glocks
tunegfs2 -l device | grep protocol
tunegfs2 -o lockproto=lock_dlm device
tunegfs2 -l device | grep table
tunegfs2 -o locktable= file_system_name device
tunegfs2 -l device | grep UUID
tunegfs2 -U uuid device
tunegfs2 -l device
echo 1 > /sys/fs/gfs2/ cluster_name:file_system_name /tune/withdraw