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Date:   Mon, 25 Apr 2022 17:28:04 -0700
From:   Marc MERLIN <marc@merlins.org>
To:     Josef Bacik <josef@toxicpanda.com>
Cc:     linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent
 transid verify failed + open_ctree failed)
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On Sun, Apr 24, 2022 at 08:36:42PM -0400, Josef Bacik wrote:
> > I ran it a second time and got the same output
> 
> Well thats something at least, I've rigged it up to dump the leaf so I
> can see wtf is going on here.  Thanks,

Sorry for the delay, took a while to run:
(gdb) run rescue init-extent-tree /dev/mapper/dshelf1
Starting program: /var/local/src/btrfs-progs-josefbacik/btrfs rescue init-extent-tree /dev/mapper/dshelf1
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

FS_INFO IS 0x55555564cbc0
JOSEF: root 9
Couldn't find the last root for 8
inserting block group 253969301504
        item 33 key (328057487360 BLOCK_GROUP_ITEM 1073741824) itemoff 15467 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 173 key (477844471808 BLOCK_GROUP_ITEM 1073741824) itemoff 12107 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 174 key (478918213632 BLOCK_GROUP_ITEM 1073741824) itemoff 12083 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 175 key (479991955456 BLOCK_GROUP_ITEM 1073741824) itemoff 12059 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 176 key (481065697280 BLOCK_GROUP_ITEM 1073741824) itemoff 12035 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 177 key (482139439104 BLOCK_GROUP_ITEM 1073741824) itemoff 12011 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 178 key (483213180928 BLOCK_GROUP_ITEM 1073741824) itemoff 11987 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 179 key (484286922752 BLOCK_GROUP_ITEM 1073741824) itemoff 11963 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 180 key (485360664576 BLOCK_GROUP_ITEM 1073741824) itemoff 11939 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 181 key (486434406400 BLOCK_GROUP_ITEM 1073741824) itemoff 11915 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 182 key (487508148224 BLOCK_GROUP_ITEM 1073741824) itemoff 11891 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 183 key (488581890048 BLOCK_GROUP_ITEM 1073741824) itemoff 11867 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 184 key (489655631872 BLOCK_GROUP_ITEM 1073741824) itemoff 11843 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 185 key (490729373696 BLOCK_GROUP_ITEM 1073741824) itemoff 11819 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 186 key (491803115520 BLOCK_GROUP_ITEM 1073741824) itemoff 11795 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 187 key (492876857344 BLOCK_GROUP_ITEM 1073741824) itemoff 11771 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 188 key (493950599168 BLOCK_GROUP_ITEM 1073741824) itemoff 11747 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 189 key (495024340992 BLOCK_GROUP_ITEM 1073741824) itemoff 11723 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 190 key (496098082816 BLOCK_GROUP_ITEM 1073741824) itemoff 11699 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 191 key (497171824640 BLOCK_GROUP_ITEM 1073741824) itemoff 11675 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 192 key (498245566464 BLOCK_GROUP_ITEM 1073741824) itemoff 11651 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 193 key (499319308288 BLOCK_GROUP_ITEM 1073741824) itemoff 11627 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 194 key (500393050112 BLOCK_GROUP_ITEM 1073741824) itemoff 11603 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 195 key (501466791936 BLOCK_GROUP_ITEM 1073741824) itemoff 11579 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 196 key (502540533760 BLOCK_GROUP_ITEM 1073741824) itemoff 11555 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 197 key (503614275584 BLOCK_GROUP_ITEM 1073741824) itemoff 11531 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 198 key (504688017408 BLOCK_GROUP_ITEM 1073741824) itemoff 11507 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 199 key (505761759232 BLOCK_GROUP_ITEM 1073741824) itemoff 11483 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 200 key (506835501056 BLOCK_GROUP_ITEM 1073741824) itemoff 11459 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 201 key (507909242880 BLOCK_GROUP_ITEM 1073741824) itemoff 11435 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 202 key (508982984704 BLOCK_GROUP_ITEM 1073741824) itemoff 11411 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 203 key (510056726528 BLOCK_GROUP_ITEM 1073741824) itemoff 11387 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 204 key (511130468352 BLOCK_GROUP_ITEM 1073741824) itemoff 11363 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 205 key (512204210176 BLOCK_GROUP_ITEM 1073741824) itemoff 11339 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 206 key (513277952000 BLOCK_GROUP_ITEM 1073741824) itemoff 11315 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 207 key (514351693824 BLOCK_GROUP_ITEM 1073741824) itemoff 11291 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 208 key (515425435648 BLOCK_GROUP_ITEM 1073741824) itemoff 11267 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 209 key (516499177472 BLOCK_GROUP_ITEM 1073741824) itemoff 11243 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 210 key (517572919296 BLOCK_GROUP_ITEM 1073741824) itemoff 11219 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 211 key (518646661120 BLOCK_GROUP_ITEM 1073741824) itemoff 11195 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 212 key (519720402944 BLOCK_GROUP_ITEM 1073741824) itemoff 11171 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 213 key (520794144768 BLOCK_GROUP_ITEM 1073741824) itemoff 11147 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 214 key (521867886592 BLOCK_GROUP_ITEM 1073741824) itemoff 11123 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 215 key (522941628416 BLOCK_GROUP_ITEM 1073741824) itemoff 11099 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 216 key (524015370240 BLOCK_GROUP_ITEM 1073741824) itemoff 11075 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
        item 217 key (525089112064 BLOCK_GROUP_ITEM 1073741824) itemoff 11051 itemsize 24
                block group used 0 chunk_objectid 256 flags DATA|single
ERROR: Error adding block group -17
ERROR: commit_root already set when starting transaction
WARNING: reserved space leaked, flag=0x4 bytes_reserved=81920
extent buffer leak: start 67469312 len 16384
extent buffer leak: start 29540352 len 16384
WARNING: dirty eb leak (aborted trans): start 29540352 len 16384
extent buffer leak: start 29589504 len 16384
WARNING: dirty eb leak (aborted trans): start 29589504 len 16384
extent buffer leak: start 29655040 len 16384
WARNING: dirty eb leak (aborted trans): start 29655040 len 16384
Init extent tree failed
[Inferior 1 (process 24213) exited with code 0357]

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