mirror of
https://github.com/ceph/ceph
synced 2024-12-22 11:31:55 +00:00
243 lines
6.4 KiB
Perl
243 lines
6.4 KiB
Perl
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Setup
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=====
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$ rbd create --size 10 img
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$ rbd snap create img@snap
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$ rbd create --size 1 imgpart
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$ DEV=$(sudo rbd map imgpart)
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$ cat <<EOF | sudo sfdisk $DEV >/dev/null 2>&1
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> unit: sectors
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> /dev/rbd0p1 : start= 512, size= 512, Id=83
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> /dev/rbd0p2 : start= 1024, size= 512, Id=83
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> EOF
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$ sudo rbd unmap $DEV
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$ rbd snap create imgpart@snap
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Image HEAD
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==========
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R/W, unpartitioned:
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$ DEV=$(sudo rbd map img)
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$ blockdev --getro $DEV
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0
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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$ blockdev --setro $DEV
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setro $DEV
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$ blockdev --getro $DEV
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1
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?': Operation not permitted (glob)
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[1]
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$ blockdev --setrw $DEV
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw $DEV
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$ blockdev --getro $DEV
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0
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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$ sudo rbd unmap $DEV
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R/W, partitioned:
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$ DEV=$(sudo rbd map imgpart)
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$ udevadm settle
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ blockdev --setro ${DEV}p1
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setro ${DEV}p1
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$ blockdev --getro ${DEV}p1
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1
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
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[1]
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ blockdev --setrw ${DEV}p1
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p1
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ sudo rbd unmap $DEV
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$ DEV=$(sudo rbd map imgpart)
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$ udevadm settle
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ blockdev --setro ${DEV}p2
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setro ${DEV}p2
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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1
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
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[1]
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$ blockdev --setrw ${DEV}p2
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p2
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ sudo rbd unmap $DEV
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R/O, unpartitioned:
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$ DEV=$(sudo rbd map --read-only img)
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$ blockdev --getro $DEV
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1
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?': Operation not permitted (glob)
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[1]
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$ blockdev --setrw $DEV
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw $DEV
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$ blockdev --getro $DEV
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0
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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$ sudo rbd unmap $DEV
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R/O, partitioned:
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$ DEV=$(sudo rbd map --read-only imgpart)
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$ udevadm settle
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$ blockdev --getro ${DEV}p1
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1
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$ blockdev --getro ${DEV}p2
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1
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
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[1]
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
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[1]
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$ blockdev --setrw ${DEV}p1
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p1
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$ blockdev --setrw ${DEV}p2
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p2
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$ blockdev --getro ${DEV}p1
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0
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$ blockdev --getro ${DEV}p2
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0
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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$ sudo rbd unmap $DEV
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Image snapshot
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==============
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Unpartitioned:
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$ DEV=$(sudo rbd map img@snap)
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$ blockdev --getro $DEV
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1
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?': Operation not permitted (glob)
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[1]
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$ blockdev --setrw $DEV
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw $DEV
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.*BLKROSET: Read-only file system (re)
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[1]
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$ blockdev --getro $DEV
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1
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$ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?': Operation not permitted (glob)
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[1]
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$ sudo rbd unmap $DEV
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Partitioned:
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$ DEV=$(sudo rbd map imgpart@snap)
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$ udevadm settle
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$ blockdev --getro ${DEV}p1
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1
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$ blockdev --getro ${DEV}p2
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1
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
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[1]
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
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[1]
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$ blockdev --setrw ${DEV}p1
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p1
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.*BLKROSET: Read-only file system (re)
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[1]
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$ blockdev --setrw ${DEV}p2
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.*BLKROSET: Permission denied (re)
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[1]
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$ sudo blockdev --setrw ${DEV}p2
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.*BLKROSET: Read-only file system (re)
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[1]
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$ blockdev --getro ${DEV}p1
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1
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$ blockdev --getro ${DEV}p2
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1
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$ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
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[1]
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$ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
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dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
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[1]
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$ sudo rbd unmap $DEV
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rw -> ro with open_count > 0
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============================
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$ DEV=$(sudo rbd map img)
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$ { sleep 10; sudo blockdev --setro $DEV; } &
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$ dd if=/dev/urandom of=$DEV bs=1k oflag=direct status=noxfer
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dd: error writing '/dev/rbd?': Operation not permitted (glob)
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[1-9]\d*\+0 records in (re)
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[1-9]\d*\+0 records out (re)
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[1]
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$ sudo rbd unmap $DEV
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Teardown
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========
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$ rbd snap purge imgpart >/dev/null 2>&1
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$ rbd rm imgpart >/dev/null 2>&1
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$ rbd snap purge img >/dev/null 2>&1
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$ rbd rm img >/dev/null 2>&1
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