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| H A D | raid56.c | diff bbbee460aaaabe5bea6665dd4ce18677f2d154cc Tue May 14 11:02:13 CEST 2024 Qu Wenruo <wqu@suse.com> btrfs: raid56: do extra dumping for CONFIG_BTRFS_ASSERT
There are several hard-to-hit ASSERT()s hit inside raid56.
Unfortunately the ASSERT() expression is a little complex, and except
the ASSERT(), there is nothing to provide any clue.
Considering if race is involved, it's pretty hard to reproduce.
Meanwhile sometimes the dump of the rbio structure can provide some
pretty good clues, it's worth to do the extra multi-line dump for
btrfs raid56 related code.
The dump looks like this:
BTRFS critical (device dm-3): bioc logical=4598530048 full_stripe=4598530048 size=0 map_type=0x81 mirror=0 replace_nr_stripes=0 replace_stripe_src=-1 num_stripes=5
BTRFS critical (device dm-3): nr=0 devid=1 physical=1166147584
BTRFS critical (device dm-3): nr=1 devid=2 physical=1145176064
BTRFS critical (device dm-3): nr=2 devid=4 physical=1145176064
BTRFS critical (device dm-3): nr=3 devid=5 physical=1145176064
BTRFS critical (device dm-3): nr=4 devid=3 physical=1145176064
BTRFS critical (device dm-3): rbio flags=0x0 nr_sectors=80 nr_data=4 real_stripes=5 stripe_nsectors=16 scrubp=0 dbitmap=0x0
BTRFS critical (device dm-3): logical=4598530048
assertion failed: orig_logical >= full_stripe_start && orig_logical + orig_len <= full_stripe_start + rbio->nr_data * BTRFS_STRIPE_LEN, in fs/btrfs/raid56.c:1702
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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