Bug 216086 - btrfs-progs using btrfs-convert aborts with an assert
Summary: btrfs-progs using btrfs-convert aborts with an assert
Status: NEW
Alias: None
Product: File System
Classification: Unclassified
Component: btrfs (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: BTRFS virtual assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-06 15:26 UTC by torbjorn
Modified: 2022-06-06 15:26 UTC (History)
0 users

See Also:
Kernel Version: 5.15.35
Subsystem:
Regression: No
Bisected commit-id:

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Description torbjorn 2022-06-06 15:26:03 UTC 
Hello.

I tried to run btrfs-convert on one of my ext4 filesystems and all i got was this:

--
btrfs-convert from btrfs-progs v5.16.2

convert/main.c:1162: do_convert: Assertion `cctx.total_bytes != 0` failed, value 0
btrfs-convert(+0xffb0)[0x557defdabfb0]
btrfs-convert(main+0x6c5)[0x557defdaa125]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea)[0x7f66e1f8bd0a]
btrfs-convert(_start+0x2a)[0x557defdab52a]
Aborted
--

The filesystem is 16TiB using ext4 and it got around 8TiB of data used on it.
The ext4 filesystem contains almost exclusively large files, some of over 1TiB.
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