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|
Setup
=====
$ rbd create --size 1 img
$ rbd snap create img@snap --no-progress
$ rbd create --size 1 anotherimg
$ ceph osd pool create custom >/dev/null 2>&1
$ rbd pool init custom
$ rbd create --size 1 custom/img
$ rbd snap create custom/img@snap --no-progress
$ rbd snap create custom/img@anothersnap --no-progress
Spell out device instead of using $DEV - sfdisk is not a joke.
$ DEV=$(sudo rbd device map img)
$ cat <<EOF | sudo sfdisk /dev/rbd[01] >/dev/null 2>&1
> unit: sectors
> /dev/rbd0p1 : start= 2, size= 2, Id=83
> /dev/rbd0p2 : start= 5, size= 2043, Id= 5
> /dev/rbd0p3 : start= 0, size= 0, Id= 0
> /dev/rbd0p4 : start= 0, size= 0, Id= 0
> /dev/rbd0p5 : start= 7, size= 2, Id=83
> EOF
Unmap by device
===============
Unmap by device (img is already mapped):
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap $DEV
$ rbd device list
Unmap by device partition:
$ DEV=$(sudo rbd device map img)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap ${DEV}p1
$ rbd device list
$ DEV=$(sudo rbd device map img)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap ${DEV}p5
$ rbd device list
Not a block device - random junk prefixed with /dev/ (so it's not
interpreted as a spec):
$ sudo rbd device unmap /dev/foobar
rbd: '/dev/foobar' is not a block device
rbd: unmap failed: (22) Invalid argument
[22]
Not a block device - device that's just been unmapped:
$ DEV=$(sudo rbd device map img)
$ sudo rbd device unmap $DEV
$ sudo rbd device unmap $DEV
rbd: '/dev/rbd?' is not a block device (glob)
rbd: unmap failed: (22) Invalid argument
[22]
A block device, but not rbd:
$ sudo rbd device unmap /dev/[sv]da
rbd: '/dev/?da' is not an rbd device (glob)
rbd: unmap failed: (22) Invalid argument
[22]
Unmap by spec
=============
img:
$ sudo rbd device map img
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
$ sudo rbd device map img
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd --image img device unmap
$ rbd device list
img@snap:
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ rbd device list
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd --snap snap device unmap img
$ rbd device list
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd --image img --snap snap device unmap
$ rbd device list
pool/img@snap, default pool:
$ sudo rbd device map rbd/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap rbd/img@snap
$ rbd device list
$ sudo rbd device map rbd/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd --pool rbd device unmap img@snap
$ rbd device list
$ sudo rbd device map rbd/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd --pool rbd --snap snap device unmap img
$ rbd device list
$ sudo rbd device map rbd/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd --pool rbd --image img --snap snap device unmap
$ rbd device list
pool/img@snap, custom pool:
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
$ rbd device list
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd --pool custom device unmap img@snap
$ rbd device list
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd --pool custom --snap snap device unmap img
$ rbd device list
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd --pool custom --image img --snap snap device unmap
$ rbd device list
Not a mapped spec - random junk (which gets interpreted as a spec):
$ sudo rbd device unmap foobar
rbd: rbd/foobar: not a mapped image or snapshot
rbd: unmap failed: (22) Invalid argument
[22]
$ sudo rbd --image foobar device unmap
rbd: rbd/foobar: not a mapped image or snapshot
rbd: unmap failed: (22) Invalid argument
[22]
Not a mapped spec - spec that's just been unmapped:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device unmap img
$ sudo rbd device unmap img
rbd: rbd/img: not a mapped image or snapshot
rbd: unmap failed: (22) Invalid argument
[22]
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ sudo rbd device unmap img@snap
rbd: rbd/img@snap: not a mapped image or snapshot
rbd: unmap failed: (22) Invalid argument
[22]
Need an arg:
$ sudo rbd device unmap
rbd: unmap requires either image name or device path
[22]
Two images
==========
Unmap img first:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map anotherimg
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? rbd anotherimg - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
id pool namespace image snap device
? rbd anotherimg - /dev/rbd? (glob)
$ sudo rbd device unmap anotherimg
$ rbd device list
Unmap anotherimg first:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map anotherimg
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? rbd anotherimg - /dev/rbd? (glob)
$ sudo rbd device unmap anotherimg
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
Image and its snap
==================
Unmap the image first:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ rbd device list
Unmap the snap first:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
Two snaps of the same image
===========================
Unmap snap first:
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ sudo rbd device map custom/img@anothersnap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
? custom img anothersnap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
$ rbd device list
id pool namespace image snap device
? custom img anothersnap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@anothersnap
$ rbd device list
Unmap anothersnap first:
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ sudo rbd device map custom/img@anothersnap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
? custom img anothersnap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@anothersnap
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
$ rbd device list
Same img and snap in different pools
====================================
img:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map custom/img
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? custom img - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
id pool namespace image snap device
? custom img - /dev/rbd? (glob)
$ sudo rbd device unmap custom/img
$ rbd device list
img@snap:
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
? custom img snap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ rbd device list
Same spec mapped twice
======================
img:
$ sudo rbd device map img
/dev/rbd? (glob)
$ sudo rbd device map img
rbd: warning: image already mapped as /dev/rbd? (glob)
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap img
rbd: rbd/img: mapped more than once, unmapping /dev/rbd? only (glob)
$ rbd device list
id pool namespace image snap device
? rbd img - /dev/rbd? (glob)
$ sudo rbd device unmap img
$ rbd device list
img@snap:
$ sudo rbd device map img@snap
/dev/rbd? (glob)
$ sudo rbd device map img@snap
rbd: warning: image already mapped as /dev/rbd? (glob)
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
rbd: rbd/img@snap: mapped more than once, unmapping /dev/rbd? only (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap img@snap
$ rbd device list
pool/img@snap, default pool:
$ sudo rbd device map rbd/img@snap
/dev/rbd? (glob)
$ sudo rbd device map rbd/img@snap
rbd: warning: image already mapped as /dev/rbd? (glob)
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap rbd/img@snap
rbd: rbd/img@snap: mapped more than once, unmapping /dev/rbd? only (glob)
$ rbd device list
id pool namespace image snap device
? rbd img snap /dev/rbd? (glob)
$ sudo rbd device unmap rbd/img@snap
$ rbd device list
pool/img@snap, custom pool:
$ sudo rbd device map custom/img@snap
/dev/rbd? (glob)
$ sudo rbd device map custom/img@snap
rbd: warning: image already mapped as /dev/rbd? (glob)
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
? custom img snap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
rbd: custom/img@snap: mapped more than once, unmapping /dev/rbd? only (glob)
$ rbd device list
id pool namespace image snap device
? custom img snap /dev/rbd? (glob)
$ sudo rbd device unmap custom/img@snap
$ rbd device list
Odd names
=========
$ ceph osd pool create foo\* >/dev/null 2>&1
$ rbd pool init foo\*
$ rbd create --size 1 foo\*/[0.0.0.0]
$ rbd snap create foo\*/[0.0.0.0]@\?bar --no-progress
$ sudo rbd device map foo\*/[0.0.0.0]@\?bar
/dev/rbd? (glob)
$ rbd device list
id pool namespace image snap device
? foo* [0.0.0.0] ?bar /dev/rbd? (glob)
$ sudo rbd device unmap foo\*/[0.0.0.0]@\?bar
$ rbd device list
$ ceph osd pool delete foo\* foo\* --yes-i-really-really-mean-it >/dev/null 2>&1
Teardown
========
$ ceph osd pool delete custom custom --yes-i-really-really-mean-it >/dev/null 2>&1
$ rbd snap purge anotherimg >/dev/null 2>&1
$ rbd rm anotherimg >/dev/null 2>&1
$ rbd snap purge img >/dev/null 2>&1
$ rbd rm img >/dev/null 2>&1
|
