blkdeactivate(8) [centos man page]
BLKDEACTIVATE(8) BLKDEACTIVATE(8) NAME
blkdeactivate - utility to deactivate block devices SYNOPSIS
blkdeactivate [options] [device...] DESCRIPTION
blkdeactivate utility deactivates block devices. If a device is mounted, the utility can unmount it automatically before trying to deacti- vate. The utility currently supports device-mapper devices, including LVM volumes. LVM volumes are handled directly using the lvm command. Other device-mapper based devices are handled using the dmsetup command. OPTIONS
-e, --errors Show errors reported from tools called by blkdeactivate. Without this option, any error messages from these external tools are sup- pressed and the blkdeactivate itself provides only a summary message about device being skipped or not. -h, --help Display the help text. -u, --umount Unmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deactivated. -v, --verbose Run in verbose mode. -d, --dmoption dm_options Comma separated list of device-mapper specific options. -l, --lvmoption lvm_options Comma separated list of LVM specific options. DM_OPTIONS retry Retry removal several times in case of failure. force Force device removal. See dmsetup(8) for more information. LVM_OPTIONS retry Retry removal several times in case of failure. wholevg Deactivate the whole LVM Volume Group when processing a Logical Volume. Deactivating Volume Group as a whole takes less time than deactivating each Logical Volume separately. EXAMPLES
Deactivate all supported block devices found in the system. If a device is mounted, skip its deactivation. blkdeactivate Deactivate all supported block devices found in the system. If a device is mounted, unmount it first if possible. blkdeactivate -u Deactivate supplied device together with all its holders. If any of the devices processed is mounted, unmount it first if possible. blkdeactivate -u /dev/vg/lvol0 Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails. Deactivate the whole Volume Group at once when processing an LVM Logical Volume. blkdeactivate -u -d retry -l wholevg Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case the deactivation fails and force removal. blkdeactivate -d force,retry SEE ALSO
lsblk(8) umount(8) dmsetup(8) lvm(8) Red Hat, Inc LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) BLKDEACTIVATE(8)
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eject(1) User Commands eject(1) NAME
eject - eject media such as CD-ROM and floppy from drive SYNOPSIS
eject [-dflqt] [ [device | nickname]] DESCRIPTION
The eject utility is used for those removable media devices that do not have a manual eject button, or for those that might be locked due to, for instance, being mounted. The device may be specified by its name or by a nickname. If no device is specified, the default device is used. Only devices that support eject under program control respond to this command. When eject is used on media that can only be ejected manually, it does everything except remove the media, including unmounting the file system if it is mounted. In this case, eject displays a message that the media can now be manually ejected. Do not physically eject media from a device that contains mounted file systems. eject automatically searches for any mounted file systems that reside on the device, and attempts to umount them prior to ejecting the media. See mount(1M). If the unmount operation fails, eject prints a warning message and exits. The -f option can be used to specify an eject even if the device contains mounted partitions. If you have inserted a floppy diskette, you might need to use volcheck(1) before ejecting the media to inform the system the floppy's pres- ence. OPTIONS
The following options are supported: -d Display the name of the default device to be ejected. -f Force the device to eject even if it is busy. -l Display paths and nicknames of ejectable devices. -q Query to see if the media is present. -t Issues the drive a CD-ROM tray close command. Not all devices support this command. OPERANDS
The following operands are supported: device Specifies which device to eject, by the name it appears in the directory /dev. nickname Specifies which device to eject, by its nickname as known to this command. Volume label or device type (for example, cdrom or floppy0) can be used as a nickname. EXAMPLES
Example 1 Ejecting Media The following example ejects media by its volume label: example> eject 'My Pictures' Example 2 Ejecting a Floppy Disk The following example ejects a floppy disk from the first floppy drive: example> eject floppy0 EXIT STATUS
The following exit codes are returned: 0 The operation was successful or, with the -q option, the media is in the drive. 1 The operation was unsuccessful or, with the -q option, the media is not in the drive. 2 Invalid options were specified. 3 An ioctl() request failed. 4 Manually ejectable media is now okay to remove. FILES
/dev/diskette0 default diskette file /dev/sr0 default CD-ROM file (deprecated) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
volcheck(1), mount(1M), rmmount(1M), ioctl(2), attributes(5) SunOS 5.11 18 Sep 2006 eject(1)