Ilya Dryomov cf32bd9c86 rbd: do not treat standalone as flatten ... If the clone is resized down to 0, it becomes standalone. If such resize is carried over while an image is mapped we would detect this and call rbd_dev_parent_put() which means "let go of all parent state, including the spec(s) of parent images(s)". This leads to a mismatch between "rbd info" and sysfs parent fields, so a fix is in order. # rbd create --image-format 2 --size 1 foo # rbd snap create foo@snap # rbd snap protect foo@snap # rbd clone foo@snap bar # DEV=$(rbd map bar) # rbd resize --allow-shrink --size 0 bar # rbd resize --size 1 bar # rbd info bar | grep parent parent: rbd/foo@snap Before: # cat /sys/bus/rbd/devices/0/parent (no parent image) After: # cat /sys/bus/rbd/devices/0/parent pool_id 0 pool_name rbd image_id 10056b8b4567 image_name foo snap_id 2 snap_name snap overlap 0 Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Josh Durgin <jdurgin@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>		2015-02-19 13:31:39 +03:00
..
aoe	block: remove artifical max_hw_sectors cap	2014-10-21 14:02:54 -06:00
drbd	Merge branch 'for-3.19/drivers' of git://git.kernel.dk/linux-block	2014-12-13 14:22:26 -08:00
mtip32xx	blk-mq: add a 'list' parameter to ->queue_rq()	2014-10-29 11:14:52 -06:00
paride	Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block	2014-10-18 11:53:51 -07:00
rsxx	block/rsxx: use generic io stats accounting functions to simplify io stat accounting	2014-11-24 08:05:18 -07:00
xen-blkback	Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block	2014-10-18 12:12:45 -07:00
zram	zram: use DEVICE_ATTR_[RW|RO|WO] to define zram sys device attribute	2014-12-13 12:42:50 -08:00
amiflop.c	block: drop owner assignment from platform_drivers	2014-10-20 16:20:18 +02:00
ataflop.c	Merge branch 'for-3.16/core' of git://git.kernel.dk/linux-block into next	2014-06-02 09:29:34 -07:00
brd.c	brd: add ram disk visibility option	2014-08-21 20:42:01 -05:00
cciss_cmd.h
cciss_scsi.c	cciss: switch to ->show_info()	2013-04-09 14:13:19 -04:00
cciss_scsi.h
cciss.c	block: use pci_zalloc_consistent	2014-08-08 15:57:28 -07:00
cciss.h
cpqarray.c	cpqarray: fix info leak in ida_locked_ioctl()	2013-09-24 17:00:26 -07:00
cpqarray.h
cryptoloop.c	move linux/loop.h to drivers/block	2013-06-29 12:46:45 +04:00
DAC960.c	block: use pci_zalloc_consistent	2014-08-08 15:57:28 -07:00
DAC960.h
floppy.c	Merge branch 'for-jens' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/linux-block into for-linus	2014-06-18 10:30:22 -07:00
hd.c	block: hd: remove deprecated IRQF_DISABLED	2014-10-01 08:16:07 -06:00
ida_cmd.h
ida_ioctl.h
Kconfig	zram: promote zram from staging	2014-01-30 16:56:55 -08:00
loop.c	Merge branch 'sched/urgent' into sched/core, to avoid conflicts	2014-05-07 13:15:46 +02:00
loop.h	move linux/loop.h to drivers/block	2013-06-29 12:46:45 +04:00
Makefile	zram: promote zram from staging	2014-01-30 16:56:55 -08:00
mg_disk.c	block: drop owner assignment from platform_drivers	2014-10-20 16:20:18 +02:00
nbd.c	block: disable entropy contributions for nonrot devices	2014-10-04 10:55:32 -06:00
null_blk.c	block: fix checking return value of blk_mq_init_queue	2015-01-02 10:32:02 -07:00
nvme-core.c	NVMe: cq_vector should be signed	2015-01-15 15:19:10 -07:00
nvme-scsi.c	Merge branch 'for-3.19/drivers' of git://git.kernel.dk/linux-block	2014-12-13 14:22:26 -08:00
osdblk.c	block: replace strict_strtoul() with kstrtoul()	2013-09-11 15:56:56 -07:00
pktcdvd.c	block,scsi: fixup blk_get_request dead queue scenarios	2014-08-28 10:03:46 -06:00
ps3disk.c	block: Kill bio_segments()/bi_vcnt usage	2013-11-23 22:33:51 -08:00
ps3vram.c	block: Convert bio_for_each_segment() to bvec_iter	2013-11-23 22:33:49 -08:00
rbd_types.h	rbd: get rid of RBD_MAX_SEG_NAME_LEN	2012-12-17 08:37:29 -06:00
rbd.c	rbd: do not treat standalone as flatten	2015-02-19 13:31:39 +03:00
skd_main.c	block: disable entropy contributions for nonrot devices	2014-10-04 10:55:32 -06:00
skd_s1120.h	skd: fix formatting in skd_s1120.h	2013-11-08 09:10:30 -07:00
smart1,2.h
sunvdc.c	sunvdc: reconnect ldc after vds service domain restarts	2014-12-11 18:52:45 -08:00
swim3.c	block: remove struct request buffer member	2014-04-15 14:03:02 -06:00
swim_asm.S
swim.c	block: drop owner assignment from platform_drivers	2014-10-20 16:20:18 +02:00
sx8.c	block,scsi: fixup blk_get_request dead queue scenarios	2014-08-28 10:03:46 -06:00
umem.c	block: Convert drivers to immutable biovecs	2013-11-23 22:33:51 -08:00
umem.h
virtio_blk.c	block: fix checking return value of blk_mq_init_queue	2015-01-02 10:32:02 -07:00
xen-blkfront.c	xen/blkfront: remove redundant flush_op	2014-12-10 12:20:18 -05:00
xsysace.c	block: systemace: Remove .owner field for driver	2014-08-21 20:37:54 -05:00
z2ram.c	block: remove struct request buffer member	2014-04-15 14:03:02 -06:00