vxfs

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V E R I T A S E D U C A T I O N Q U I C K R E F E R E N C E
VxFS Commands
SETTING UP A FILE SYSTEM
Action Command Line
Make a VxFS file system mkfs –F vxfs [generic_options] [-o vxfs_options]
char_device [size]
Mount a file system mount –F vxfs [generic_options] [-o vxfs_options]
block_device mount_point
Unmount a file system umount mount_point
Determine file system type fstyp [-v] block_device
Report free blocks/inodes df –F vxfs [generic_options] [-o s] mount_point
Check/repair a file system fsck –F vxfs [generic_options] [yY] [nN]
character_device
ONLINE ADMINISTRATION
Action Command Line
Resize a file system fasdm [-b newsize] [-r raw_device] mount_point
Dump a file system vxdump [options] mount_point
Restore a file system vxrestore [options] mount_point
Create a snapshot file
system
mount –F vxfs –o
snapof=source_block_device,[snapsize=size]
destination_block_device snap_mount_point
Create a storage
checkpoint fsckptadm [-nruv] create ckpt_name mount_point
List storage checkpoints fsckptadm [-clv] list mount_point
Remove a checkpoint fsckptadm [-sv] remove ckpt_name mount_point
Mount a checkpoint mount –F vxfs –o ckpt=ckpt_name pseudo_device
mount_point
Unmount a checkpoint umount mount_point
Change checkpoint
attributes
fsckptadm [-sv] set [nodatanomountremove]
ckpt_name
Upgrade the VxFS layout vxupgrade [-n new_version] [-r raw_device]
mount_point
Display layout version vxupgrade mount_point
DEFRAGMENTING A FILE SYSTEM
Action Command Line
Report on directory fragmentation fsadm –D mount_point
Report on extent fragmentation fsadm –E [-l largesize] mount_point
Defragment directories fsadm –d mount_point
Defragment extents fsadm –e mount_point
Reorganize a file system to
support files > 2GB fsadm –o largefiles mount_point
INTENT LOGGING, I/O TYPES, AND CACHE ADVISORIES
Action Command Line
Change default logging behavior
fsck –F vxfs [generic_options]
–o delaylogtmplognodatainlogblkclear
block_device mount_point
Change how VxFS handles
buffered I/O operations
mount –F vxfs [generic_options] –o
mincache=closesyncdirectdsyncunbuffered
tmpcache block_device mount_point
Change how VxFS handles I/O
requests for files opened with
O_SYNC and O_DSYNC
mount –F vxfs [generic_options] –o
convosync=closesyncdirectdsyncunbuffered
delay block_device mount_point
QUICK I/O
Action Command Line
Enable Quick I/O at mount mount –F vxfs –o qio mount_point
Disable Quick I/O mount –F vxfs –o noqio mount_point
Treat a file as a raw character
device filename::cdev:vxfs:
Create a Quick I/O file through a
symbolic link
qiomkfile [-h header_size] [-a] [-s size]
[-e-r size] file
Get Quick I/O statistics qiostat [-i interval][-c count] [-l] [-r] file
Enable cached QIO for all files in
a file system vxtunefs –s –o qio_cache_enable=1 mnt_point
Disable cached QIO for a file qioadmin –S filename=OFF mount_point