JSELEC

Tag: commands

  • ZFS cheat sheet

    Pool Related Commands

    # zpool create datapool c0t0d0 Create a basic pool named datapool
    # zpool create -f datapool c0t0d0 Force the creation of a pool
    # zpool create -m /data datapool c0t0d0 Create a pool with a different mount point than the default.
    # zpool create datapool raidz c3t0d0 c3t1d0 c3t2d0 Create RAID-Z vdev pool
    # zpool add datapool raidz c4t0d0 c4t1d0 c4t2d0 Add RAID-Z vdev to pool datapool
    # zpool create datapool raidz1 c0t0d0 c0t1d0 c0t2d0 c0t3d0 c0t4d0 c0t5d0 Create RAID-Z1 pool
    # zpool create datapool raidz2 c0t0d0 c0t1d0 c0t2d0 c0t3d0 c0t4d0 c0t5d0 Create RAID-Z2 pool
    # zpool create datapool mirror c0t0d0 c0t5d0 Mirror c0t0d0 to c0t5d0
    # zpool create datapool mirror c0t0d0 c0t5d0 mirror c0t2d0 c0t4d0 disk c0t0d0 is mirrored with c0t5d0 and disk c0t2d0 is mirrored withc0t4d0
    # zpool add datapool mirror c3t0d0 c3t1d0 Add new mirrored vdev to datapool
    # zpool add datapool spare c1t3d0 Add spare device c1t3d0 to the datapool
    ## zpool create -n geekpool c1t3d0 Do a dry run on pool creation

    Show Pool Information

    # zpool status -x Show pool status
    # zpool status -v datapool Show individual pool status in verbose mode
    # zpool list Show all the pools
    # zpool list -o name,size Show particular properties of all the pools (here, name and size)
    # zpool list -Ho name Show all pools without headers and columns

    File-system/Volume related commands

    # zfs create datapool/fs1 Create file-system fs1 under datapool
    # zfs create -V 1gb datapool/vol01 Create 1 GB volume (Block device) in datapool
    # zfs destroy -r datapool destroy datapool and all datasets under it.
    # zfs destroy -fr datapool/data destroy file-system or volume (data) and all related snapshots

    Set ZFS file system properties

    # zfs set quota=1G datapool/fs1 Set quota of 1 GB on filesystem fs1
    # zfs set reservation=1G datapool/fs1 Set Reservation of 1 GB on filesystem fs1
    # zfs set mountpoint=legacy datapool/fs1 Disable ZFS auto mounting and enable mounting through /etc/vfstab.
    # zfs set sharenfs=on datapool/fs1 Share fs1 as NFS
    # zfs set compression=on datapool/fs1 Enable compression on fs1

    File-system/Volume related commands

    # zfs create datapool/fs1 Create file-system fs1 under datapool
    # zfs create -V 1gb datapool/vol01 Create 1 GB volume (Block device) in datapool
    # zfs destroy -r datapool destroy datapool and all datasets under it.
    # zfs destroy -fr datapool/data destroy file-system or volume (data) and all related snapshots

    Show file system info

    # zfs list List all ZFS file system
    # zfs get all datapool” List all properties of a ZFS file system

    Mount/Umount Related Commands

    # zfs set mountpoint=/data datapool/fs1 Set the mount-point of file system fs1 to /data
    # zfs mount datapool/fs1 Mount fs1 file system
    # zfs umount datapool/fs1 Umount ZFS file system fs1
    # zfs mount -a Mount all ZFS file systems
    # zfs umount -a Umount all ZFS file systems

    ZFS I/O performance

    # zpool iostat 2 Display ZFS I/O Statistics every 2 seconds
    # zpool iostat -v 2 Display detailed ZFS I/O statistics every 2 seconds

    ZFS maintenance commands

    # zpool scrub datapool Run scrub on all file systems under data pool
    # zpool offline -t datapool c0t0d0 Temporarily offline a disk (until next reboot)
    # zpool online Online a disk to clear error count
    # zpool clear Clear error count without a need to the disk

    Import/Export Commands

    # zpool import List pools available for import
    # zpool import -a Imports all pools found in the search directories
    # zpool import -d To search for pools with block devices not located in /dev/dsk
    # zpool import -d /zfs datapool Search for a pool with block devices created in /zfs
    # zpool import oldpool newpool Import a pool originally named oldpool under new name newpool
    # zpool import 3987837483 Import pool using pool ID
    # zpool export datapool Deport a ZFS pool named mypool
    # zpool export -f datapool Force the unmount and deport of a ZFS pool

    Snapshot Commands

    # zfs snapshot datapool/fs1@12jan2014 Create a snapshot named 12jan2014 of the fs1 filesystem
    # zfs list -t snapshot List snapshots
    # zfs rollback -r datapool/fs1@10jan2014 Roll back to 10jan2014 (recursively destroy intermediate snapshots)
    # zfs rollback -rf datapool/fs1@10jan2014 Roll back must and force unmount and remount
    # zfs destroy datapool/fs1@10jan2014 Destroy snapshot created earlier
    # zfs send datapool/fs1@oct2013 &gt /geekpool/fs1/oct2013.bak Take a backup of ZFS snapshot locally
    # zfs receive anotherpool/fs1 &lt /geekpool/fs1/oct2013.bak Restore from the snapshot backup backup taken
    # zfs send datapool/fs1@oct2013 | zfs receive anotherpool/fs1 Combine the send and receive operation
    # zfs send datapool/fs1@oct2013 | ssh node02 “zfs receive testpool/testfs” Send the snapshot to a remote system node02

    Clone Commands

    # zfs clone datapool/fs1@10jan2014 /clones/fs1 Clone an existing snapshot
    # zfs destroy datapool/fs1@10jan2014 Destroy clone
  • Docker commands -2-

    Docker commands -2-

    Docker commands

    Containers

    Show running containers

    docker ps

    Show all containers

    docker ps -a

    Docker start container

    docker start xxx

    Docker stop container

    docker stop xxx

    Docker restart container

    docker restart xxx

    Docker remove container

    docker rm xxx

    Images

    Show images

    docker images

    Remove images

    docker rmi xxx

    Volumes

    List volumes

    docker volume ls

    Remove volume

    docker volume rm xxx

    Remove unused (dangling) volumes

    docker volume ls -qf dangling=true | xargs -r docker volume rm