Re: panic: Journal overflow

On 04/25/07 13:24, Rong-en Fan wrote:
> This is a i386 current SMP box as of Apr 14 or 15. Got
> a panic with geom journal.
> 
> panic: Journal overflow (joffset=3246704015360 active=3246705852416 inactive=324
> cpuid = 2
> KDB: stack backtrace:
> db_trace_self_wrapper(c06b3e2c,e5321944,c04fc86e,c06c70c8,2,...) at db_trace_sel
> kdb_backtrace(c06c70c8,2,c06ad0d2,e5321950,5,...) at kdb_backtrace+0x2f
> panic(c06ad0d2,eea3b800,2f3,eebfc000,2f3,...) at panic+0x11f
> g_journal_check_overflow(c4fc5c00,cb030a00,eb,95428000,eb,...) at g_journal_chec
> g_journal_flush(c4fc5c00,0,eb,95428000,eb,...) at g_journal_flush+0x60d
> g_journal_add_current(c4fc5c00,c9cb0948,ca8e818c,c4fc5c00,e5321cbc,...) at g_jou
> g_journal_release_delayed(c4fc5c00,0,ca8e818c,c4fdadc0,2,...) at g_journal_relea
> g_journal_flush_send(c4fc5c00,c8521c60,205d0000,1b2,205d4000,...) at g_journal_f
> g_journal_worker(c4fc5c00,e5321d38,0,0,0,...) at g_journal_worker+0x7f7
> fork_exit(c04b5813,c4fc5c00,e5321d38) at fork_exit+0x83
> fork_trampoline() at fork_trampoline+0x8
> --- trap 0, eip = 0, esp = 0xe5321d70, ebp = 0 ---
> 
> Sorry, that I don't have core dump available. Will set up next time.
> After the panic, the system hangs at single user prompt:
> 
> Trying to mount root from ufs:/dev/da0s1a
> WARNING: / was not properly dismounted
> Loading configuration files.
> kernel dumps on /dev/da0s1b
> Entropy harvesting: interrupts ethernet point_to_point kickstart.
> swapon: adding /dev/da0s1b as swap device
> Starting file system checks:
> /dev/da0s1a: 1704 files, 56880 used, 196935 free (631 frags, 24538 blocks, 0.2%
> Can't stat /dev/concat/data.journal: No such file or directory
> /dev/da0s1f: 237 files, 1208 used, 11877856 free (64 frags, 1484724 blocks, 0.0%
> GEOM_JOURNAL: Journal concat/data consistent.
> /dev/da0s1e: UNREF FILE I=548536  OWNER=root MODE=100644
> /dev/da0s1e: SIZE=717466 MTIME=Apr  4 07:58 2007  (CLEARED)
> /dev/da0s1e: FREE BLK COUNT(S) WRONG IN SUPERBLK (SALVAGED)
> /dev/da0s1e: SUMMARY INFORMATION BAD (SALVAGED)
> /dev/da0s1e: BLK(S) MISSING IN BIT MAPS (SALVAGED)
> /dev/da0s1e: 190105 files, 763850 used, 2281197 free (36557 frags, 280580 blocks
> /dev/da0s1d: 17507 files, 40158 used, 972857 free (641 frags, 121527 blocks, 0.1
> THE FOLLOWING FILE SYSTEM HAD AN UNEXPECTED INCONSISTENCY:
>         ufs: /dev/concat/data.journal (/data)
> Unknown error; help!
> AEnter full pathname of shell or RETURN for /bin/sh:
> # mount -a
> WARNING: R/W mount of /backup denied.  Filesystem is not clean - run fsck
> mount: /dev/concat/data.journal : Operation not permitted
> # fsck_ffs -p /dev/concat/data.journal
> 
> I need to issue 'fsck_ffs -p' myself... any idea about why this happens?
> 
> The geom journal setup:
> 
> Geom name: gjournal 68372861
> ID: 68372861
> Providers:
> 1. Name: concat/data.journal
>    Mediasize: 3246137539072 (3.0T)
>    Sectorsize: 512
>    Mode: r1w1e1
> Consumers:
> 1. Name: concat/data
>    Mediasize: 3247211281408 (3.0T)
>    Sectorsize: 512
>    Mode: r1w1e1
>    Jend: 3247211280896
>    Jstart: 3246137539072
>    Role: Data,Journal
> 
> The gconcat consists two scsi disk (actually, it's raid) da0 and da1.
> Oh no, it panics with journal overflow again while writing this message :(
> 
> The data.journal is shared by nfs, and there are two boxes that are
> doing a tar writing operation on this partition.

You need to change your journal switch and cache switch times, to 
something like this:

kern.geom.journal.force_switch=50
kern.geom.journal.cache.switch=75

Try that and see if that eases your pain a bit.


Eric