Solved [UFS] Crash (14.4-RELEASE-p2)

mro

mro

when creating a 2GB file e.g. with dd if=/dev/zero of=test.blob bs=100M count=20 on a netcup VPS with by far enough free space the logfile /var/log/messages shows:

Code: 
Apr 25 16:52:57 n0 kernel: panic: handle_disk_io_initiation: Unexpected type jnewblk
Apr 25 16:52:57 n0 kernel: cpuid = 0
Apr 25 16:52:57 n0 kernel: time = 1777128736
Apr 25 16:52:57 n0 kernel: KDB: stack backtrace:
Apr 25 16:52:57 n0 kernel: #0 0xffffffff80bb434d at kdb_backtrace+0x5d
Apr 25 16:52:57 n0 kernel: #1 0xffffffff80b65bb1 at vpanic+0x161
Apr 25 16:52:57 n0 kernel: #2 0xffffffff80b65a43 at panic+0x43
Apr 25 16:52:57 n0 kernel: #3 0xffffffff80e9ec7e at softdep_disk_io_initiation+0x12ae
Apr 25 16:52:57 n0 kernel: #4 0xffffffff80ec2dcb at ffs_geom_strategy+0x13b
Apr 25 16:52:57 n0 kernel: #5 0xffffffff80ed5c83 at ufs_strategy+0x83
Apr 25 16:52:57 n0 kernel: #6 0xffffffff80c25fb6 at bufstrategy+0x36
Apr 25 16:52:57 n0 kernel: #7 0xffffffff80c25e7c at bufwrite+0x1dc
Apr 25 16:52:57 n0 kernel: #8 0xffffffff80ec4f54 at ffs_syncvnode+0x3c4
Apr 25 16:52:57 n0 kernel: #9 0xffffffff80ec3b42 at ffs_fsync+0x22
Apr 25 16:52:57 n0 kernel: #10 0xffffffff80c57a87 at sched_sync+0x487
Apr 25 16:52:57 n0 kernel: #11 0xffffffff80b1d7d1 at fork_exit+0x81
Apr 25 16:52:57 n0 kernel: #12 0xffffffff810325de at fork_trampoline+0xe
Apr 25 16:52:57 n0 kernel: Uptime: 23m30s
Apr 25 16:52:57 n0 kernel: Automatic reboot in 15 seconds - press a key on the console to abort
Apr 25 16:52:57 n0 kernel: Rebooting...
Apr 25 16:52:57 n0 kernel: ---<<BOOT>>---
Apr 25 16:52:57 n0 kernel: Copyright (c) 1992-2023 The FreeBSD Project.
Apr 25 16:52:57 n0 kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
Apr 25 16:52:57 n0 kernel:      The Regents of the University of California. All rights reserved.
Apr 25 16:52:57 n0 kernel: FreeBSD is a registered trademark of The FreeBSD Foundation.
Apr 25 16:52:57 n0 kernel: FreeBSD 14.4-RELEASE-p2 GENERIC amd64

Is there a recommended solution/mitigation, should I update to 15.0 or use zfs (which wasn't offered by the provided installation image)?

P.S.: started at https://forum.netcup.de/thread/22099-spontaner-reboot/
P.P.S.: prbly related https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282189
 
No problems here on 16-CURRENT.

Code: 
bob# dd if=/dev/zero of=test.blob bs=100M count=20
20+0 records in
20+0 records out
2097152000 bytes transferred in 39.549883 secs (53025491 bytes/sec)
bob#
 
cy@ said:
No problems here on 16-CURRENT.

Code: 
bob# dd if=/dev/zero of=test.blob bs=100M count=20
20+0 records in
20+0 records out
2097152000 bytes transferred in 39.549883 secs (53025491 bytes/sec)
bob#
Click to expand...
Open a PR. This should also work on 14.2.
 
the vps vendor is fine with the single user mode not showing the problem.

how to go on, what do you recommend? 15.0 + zfs I guess, right?
 
thanks for the hint! Indeed

sh: 
$ freebsd-version -kru ; uname -a
14.4-RELEASE-p3
14.4-RELEASE-p3
14.4-RELEASE-p4
FreeBSD n0.mro.name 14.4-RELEASE-p3 FreeBSD 14.4-RELEASE-p3 GENERIC amd64
$ dd if=/dev/zero of=test.blob bs=100M count=20
$ ls -l test.blob 
-rw-r--r--  1 me me  2.0G May 12 21:29 test.blob

survives!
 
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