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btrfs-progs
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Userspace utilities to manage btrfs filesystems
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Gui Hecheng cb37bf83cc btrfs-progs: fix BUG_ON when all devices under seed fs are missing 
Steps to reproduce:
	# mkfs.btrfs -f /dev/sda[1-2]
	# btrfstune -S 1 /dev/sda1
	# mount /dev/sda /mnt
	# btrfs dev add /dev/sda3 /mnt
	# umount /mnt
	# mkfs.ext4 /dev/sda1		// kill seed dev
	# mkfs.ext4 /dev/sda2		// kill seed dev
	# btrfs-debug-tree /dev/sda3	<== BUG_ON
Output msg:
	volumes.c:1824: btrfs_read_chunk_tree: Assertion `ret` failed.
	btrfs-debug-tree[0x41cb36]
	btrfs-debug-tree(btrfs_read_chunk_tree+0x3ca)
	btrfs-debug-tree(btrfs_setup_chunk_tree_and_device_map
	btrfs-debug-tree[0x40f695]
	btrfs-debug-tree(open_ctree_fs_info+0x86)
	btrfs-debug-tree(main+0x12d)
	/lib64/libc.so.6(__libc_start_main+0xf5)
	btrfs-debug-tree[0x4062e9]

This BUG_ON complains about a failed @read_one_dev() call when
@open_seed_devices() failed to find the seed @fs_devices object
for a dev_item in chunk tree.
In this case, just insert a "shadow" @fs_devices with the fsid in
dev_item shall make no harm since no other tools will try to
make use of the stuff that the "shadow" @fs_devices possesses
after its creation.

After apply this commit, btrfs-debug-tree will report unable
to open the device.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
 		2014-10-10 10:38:38 +02:00
Documentation btrfs-progs: wait until all subvolumes are cleaned 2014-10-10 09:32:05 +02:00
tests btrfs-progs: skip extent rebuild test if no testdev 2014-10-10 10:38:36 +02:00
.gitignore btrfs-progs: Introduce asciidoc based man page and btrfs man page. 2014-04-22 14:15:19 +02:00
COPYING fix COPYING 2007-06-12 15:41:08 -04:00
INSTALL btrfs-progs: Add information about libblkid requirement to INSTALL file 2014-08-22 14:39:31 +02:00
Makefile Btrfs-progs: make BUG*() be more verbose 2014-10-01 16:34:29 +02:00
bcp Btrfs-progs: Correct path munging in bcp 2011-10-25 09:18:58 -04:00
bitops.h Btrfs-progs: add a free space cache checker to fsck V2 2013-04-23 18:56:21 +02:00
btrfs-calc-size.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-convert.c btrfs-progs: Properly cast to avoid compiler warnings, fixes FTBFS on alpha and ia64 2014-10-01 16:33:26 +02:00
btrfs-corrupt-block.c btrfs-progs: corrupt-block: fix a delete and use bug corrupting extent tree 2014-09-14 13:12:27 +02:00
btrfs-crc.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-debug-tree.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-find-root.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-fragments.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-image.c btrfs-progs: add mount status check for btrfs-image 2014-08-22 15:07:03 +02:00
btrfs-list.c btrfs-progs: Add -R to list UUIDs of original received subvolume 2014-09-14 13:09:52 +02:00
btrfs-list.h btrfs-progs: Add -R to list UUIDs of original received subvolume 2014-09-14 13:09:52 +02:00
btrfs-map-logical.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-select-super.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs-show-super.c btrfs-progs: Add human readable incompat flags output for btrfs-show-super 2014-10-01 16:34:22 +02:00
btrfs-zero-log.c btrfs-progs: use check_argc_* to check arg number for all tools 2014-08-22 15:07:02 +02:00
btrfs.c btrfs-progs: move the check_argc_* functions into utils.c 2014-08-22 14:55:27 +02:00
btrfsck.h btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
btrfstune.c btrfs-progs: add ask_user confirmation for btrfstune clear seeding flag 2014-08-22 16:09:55 +02:00
chunk-recover.c btrfs-progs: Fix malloc size for superblock. 2014-10-10 09:09:47 +02:00
cmds-balance.c btrfs-progs: balance filter: add limit of processed chunks 2014-08-22 14:55:26 +02:00
cmds-check.c btrfs-progs: Check the consistence between the parent node and child node/leaf. 2014-10-10 10:38:38 +02:00
cmds-device.c btrfs-progs: remove BTRFS_SCAN_PROC scan method 2014-10-10 10:38:34 +02:00
cmds-filesystem.c btrfs-progs: remove BTRFS_SCAN_PROC scan method 2014-10-10 10:38:34 +02:00
cmds-inspect.c Btrfs-progs: fix some build warnings on 32bit platform 2014-08-22 15:07:03 +02:00
cmds-property.c btrfs-progs: remove unnecessary return value check in btrfs-property 2014-08-22 15:07:03 +02:00
cmds-qgroup.c btrfs-progs: qgroup destroy says create failed 2014-01-31 08:22:12 -08:00
cmds-quota.c Btrfs-progs: fix magic return value in cmds-quota.c 2013-10-16 08:20:41 -04:00
cmds-receive.c btrfs-progs: add missing descriptions of '--max-errors' in btrfs-receive documentation 2014-08-22 15:07:04 +02:00
cmds-replace.c btrfs-progs: show meaningful msgs for replace cmd upon raid56 2014-08-22 14:41:15 +02:00
cmds-rescue.c btrfs-progs: use check_argc_exact to check arg number of btrfs-rescue 2014-08-22 14:39:31 +02:00
cmds-restore.c btrfs-progs: remove wrong set_argv0 for restore 2014-09-14 19:06:12 +02:00
cmds-scrub.c btrfs-progs: scrub, detect stale information in the status file 2014-10-10 10:38:36 +02:00
cmds-send.c btrfs-progs: Check fstype in find_mount_root() 2014-08-22 15:07:02 +02:00
cmds-subvolume.c btrfs-progs: wait until all subvolumes are cleaned 2014-10-10 09:32:05 +02:00
commands.h btrfs-progs: move the check_argc_* functions into utils.c 2014-08-22 14:55:27 +02:00
crc32c.c btrfs-progs: make many private symbols static 2013-09-03 19:41:08 +02:00
crc32c.h btrfs-progs: libify some parts of btrfs-progs 2013-02-27 15:24:25 +01:00
ctree.c Btrfs-progs: check all slots in leaves 2014-10-01 16:59:10 +02:00
ctree.h btrfs-progs: read global reserve size from space infos 2014-08-28 02:03:33 +02:00
dir-item.c btrfs-progs: drop unused parameter from btrfs_item_nr 2013-10-16 08:23:10 -04:00
dir-test.c Btrfs-progs: fix magic return value in dir-test.c 2013-10-16 08:20:42 -04:00
disk-io.c btrfs-progs: remove BTRFS_SCAN_PROC scan method 2014-10-10 10:38:34 +02:00
disk-io.h btrfs-progs: kill BUG_ON in readahead_tree_block() 2014-09-14 13:19:44 +02:00
extent-cache.c Btrfs-progs: extend the extent cache for the device extent 2013-07-03 14:06:54 -04:00
extent-cache.h Btrfs-progs: extend the extent cache for the device extent 2013-07-03 14:06:54 -04:00
extent-tree.c btrfs-progs: remove unused flags for btrfs_path 2014-08-28 02:03:18 +02:00
extent_io.c btrfs-progs: do not reclaim extent buffer 2014-10-10 10:38:36 +02:00
extent_io.h Btrfs-progs: keep track of transid failures and fix them if possible 2013-10-16 08:23:12 -04:00
file-item.c btrfs-progs: remove btrfs_release_path before btrfs_free_path 2014-09-14 19:06:12 +02:00
free-space-cache.c btrfs-progs: make free space checker work on non-4k sectorsize filesystems 2014-10-10 10:38:31 +02:00
free-space-cache.h btrfs-progs: make free space checker work on non-4k sectorsize filesystems 2014-10-10 10:38:31 +02:00
fsck.btrfs btrfs-progs: add fsck.btrfs stub and manpage 2014-01-31 08:22:13 -08:00
hash.h Switch btrfs_name_hash() to crc32c 2008-08-20 20:11:23 -04:00
hasher.c Unaligned access fixes 2008-02-15 11:19:58 -05:00
help.c btrfs-progs: move the check_argc_* functions into utils.c 2014-08-22 14:55:27 +02:00
inode-item.c btrfs-progs: mark static & remove unused from shared kernel code 2013-09-03 19:40:53 +02:00
inode-map.c btrfs-progs: remove btrfs_release_path before btrfs_free_path 2014-09-14 19:06:12 +02:00
ioctl-test.c btrfs-progs: mark static & remove unused from non-kernel code 2013-09-03 19:40:54 +02:00
ioctl.h btrfs-progs: balance filter: add limit of processed chunks 2014-08-22 14:55:26 +02:00
kerncompat.h Btrfs-progs: make BUG*() be more verbose 2014-10-01 16:34:29 +02:00
list.h Btrfs-progs: introduce list_{first, next}_entry/list_splice_tail{_init} 2013-07-03 14:06:55 -04:00
list_sort.c btrfs-progs: add list_sort and use it to sort devices by id 2013-10-16 08:22:26 -04:00
list_sort.h btrfs-progs: add list_sort and use it to sort devices by id 2013-10-16 08:22:26 -04:00
math.h btrfs-progs: Copyright string update 2014-03-21 06:23:24 -07:00
mkfs.c btrfs-progs: mkfs make --uuid require an argument 2014-08-22 16:09:56 +02:00
print-tree.c btrfs-progs: Add human readable flags output for chunk/block group type. 2014-08-22 14:39:35 +02:00
print-tree.h btrfs-progs: add quota group verify code 2014-08-22 14:39:33 +02:00
props.c Btrfs-progs: set string end sing '\0' for property 2014-05-02 17:05:37 +02:00
props.h Btrfs-progs: introduce btrfs property subgroup 2014-01-31 08:22:31 -08:00
qgroup-verify.c Btrfs-progs: fix typos 2014-09-02 17:05:32 +02:00
qgroup-verify.h btrfs-progs: show extent state for a subvolume 2014-08-22 15:04:16 +02:00
qgroup.c btrfs-progs: print qgroup excl as unsigned 2014-08-22 14:39:32 +02:00
qgroup.h Btrfs-progs: enhance btrfs qgroup show to sort qgroups 2013-10-16 08:23:12 -04:00
quick-test.c Btrfs-progs: rework open_ctree to take flags, add a new one V2 2013-11-07 16:10:40 -05:00
radix-tree.c btrfs-progs: Fix undefined behavior in radix-tree.c. 2014-08-22 14:39:34 +02:00
radix-tree.h btrfs-progs: libify some parts of btrfs-progs 2013-02-27 15:24:25 +01:00
raid6.c btrfs-progs: give raid6.c its exported prototypes 2013-09-03 19:41:11 +02:00
random-test.c Btrfs-progs: fix magic return value in random-test.c 2013-10-16 08:20:42 -04:00
rbtree.c Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
rbtree.h Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
repair.c Btrfs-progs: introduce common insert/search/delete functions for rb-tree 2013-07-03 14:06:54 -04:00
repair.h Btrfsck: add the ability to prune corrupt extent allocation tree blocks 2012-02-21 14:37:21 -05:00
root-tree.c Btrfs-progs: free path if we don't find root item 2014-03-21 06:23:32 -07:00
send-stream.c btrfs-progs: fix unaligned loads in receive 2014-08-22 16:09:55 +02:00
send-stream.h btrfs-progs: library version defines 2014-09-02 17:04:15 +02:00
send-test.c Btrfs-progs: remove unsed pthread attribute objects 2014-04-22 14:33:35 +02:00
send-utils.c btrfs-progs: Init root_item to avoid gcc 4.8.2 warning 2014-03-21 06:23:29 -07:00
send-utils.h btrfs-progs: enclose uuid tree compat code with ifdefs 2014-03-21 06:23:07 -07:00
send.h btrfs-progs: make libbtrfs usable from C++ 2013-02-19 11:15:30 +01:00
show-blocks Fix showblocks to display different colors for different metadata roots 2009-03-09 13:00:44 -04:00
super-recover.c btrfs-progs: super-recover: fix double free fs_devices memory 2014-10-10 10:38:32 +02:00
transaction.h btrfs-progs: add malloc check in transaction.h/btrfs_start_transaction 2013-01-18 18:27:21 +01:00
ulist.c btrfs-progs: import ulist 2014-08-22 14:39:33 +02:00
ulist.h btrfs-progs: import ulist 2014-08-22 14:39:33 +02:00
utils-lib.c btrfs-progs: move arg_strtou64 to a separate file for library 2014-05-02 17:04:28 +02:00
utils.c btrfs-progs: remove scan_for_btrfs() 2014-10-10 10:38:34 +02:00
utils.h btrfs-progs: remove scan_for_btrfs() 2014-10-10 10:38:34 +02:00
uuid-tree.c btrfs-progs: fix in-place byte swapping 2013-09-03 19:41:06 +02:00
version.sh Btrfs progs v3.16.2 2014-10-01 18:07:59 +02:00
volumes.c btrfs-progs: fix BUG_ON when all devices under seed fs are missing 2014-10-10 10:38:38 +02:00
volumes.h btrfs-progs: Allow btrfs_read_dev_super() to read all 3 super for super_recover. 2014-08-22 15:04:50 +02:00