13.0-BETA3 frequent file system (UFS) hangs

[Florian Smeets via freebsd-stable]

Hi,






load: 0.49  cmd: rm 78200 [biowr] 7.31r 0.00u 0.28s 1% 2192k


The system is UFS only.



For some of the reboots I see the following in the log before rebooting:


Feb 21 15:21:57 web01 kernel:     hold count flags ()
Feb 21 15:21:57 web01 kernel:     flags ()

Feb 21 15:21:57 web01 kernel: 9 5 0 0 done

Is this related to the thread "FreeBSD 13.0-BETA2 and slow IO" ?

I have a stable/13 kernel on there now, but that also hung once already.

Do I need to disable SU/SUJ or put a main kernel on there to get it stable?

Thanks,
Florian

on Sunday I upgraded a lightly loaded web server (Nginx+PHP-FPM+MariaDB) from 12.2-RELEASE-p3 to 13.0-BETA3. The server has been hanging every few hours (between 2-12). Until now the only remedy I found was a reboot. When the issue appears I can still read from the file system, I was able to touch a (new) file, but not delete it. mi_switch+0xc1 _sleep+0x1cb bwait+0x6e bufwrite+0x206 ffs_update+0x2d0 ffs_syncvnode+0x552 softdep_prelink+0x14b ufs_remove+0x85 VOP_REMOVE_APV+0x27 kern_funlinkat+0x2d5 sys_unlink+0x28 amd64_syscall+0x10c fast_syscall_common+0xf8 /dev/da0s1a on / (ufs, local, noatime, journaled soft-updates, writes: sync 19483 async 3361, reads: sync 24501 async 4191, fsid 374666591e63cded) Feb 21 15:21:57 web01 kernel: Waiting (max 60 seconds) for system process `vnlru' to stop... done Feb 21 15:21:57 web01 kernel: Waiting (max 60 seconds) for system process `syncer' to stop... Feb 21 15:21:57 web01 kernel: Syncing disks, vnodes remaining... 20 fsync: giving up on dirty (error = 35) 0xfffff80003815b70: type VCHR Feb 21 15:21:57 web01 kernel: usecount 1, writecount 0, refcount 1074 seqc users 0 rdev 0xfffff80004c3f000 Feb 21 15:21:57 web01 kernel: v_object 0xfffff800030d0c60 ref 0 pages 45500 cleanbuf 1071 dirtybuf 1 Feb 21 15:21:57 web01 kernel: lock type mntfs: EXCL by thread 0xfffffe00c33fc000 (pid 24, syncer, tid 100097)

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