Re: system/687: File system panic, chown

[Marshall Midden <m4_(_at_)_nts_(_dot_)_umn_(_dot_)_edu>]

The following reply was made to PR system/687; it has been noted by GNATS.

From: Marshall Midden <m4_(_at_)_nts_(_dot_)_umn_(_dot_)_edu>
To: gnats_(_at_)_openbsd_(_dot_)_org
Cc: m4_(_at_)_nts_(_dot_)_umn_(_dot_)_edu
Subject: Re: system/687: File system panic, chown
Date: Thu, 14 Jan 1999 14:10:52 -0600 (CST)

 I ran for several days with various combinations of no ccd,
 ccd with 2,3,4 items, and am totally confused.
 
 With 4.5gb disk, "c" partition -- no errors.
 With one 4.5gb disk, split into two partitions, no errors.
 With 3 disks, problems. 
 
 I thought it might have to do with c verses g partitions for
 the ccd.  No differences.  (is. sd7g,sd9g,sd12g,sd14g verses
 sd7c,sd9c,sd12c,sd14c)
 
 I thought it might have to do with using /dev/ccd1c instead of
 /dev/ccd1g -- no difference.
 
 I thought it might be file system size, so I cut the "g"
 partitions on sd7,etc in half, and the ccd in half.  No difference.
 
 A few really cute examples -- does anything come to mind as to
 where the problem might be?
 
 I have two dumps in /var/crash.  They appear easy enough to create,
 even though they are not exactly repeatable... .
 
 Help!
 
 ------------------------------------------------------------------------------
 ccdconfig -g
 ccd1		16	8	/dev/sd7g /dev/sd9g /dev/sd12g /dev/sd14g
 newfs /dev/rccd1g
 Warning: Block size and bytes per inode restrict cylinders per group to 5.
 /dev/rccd1g:	35456800 sectors in 1927 cylinders of 32 tracks, 575 sectors
 	17312.9MB in 386 cyl groups (5 c/g, 44.92MB/g, 10816 i/g)
 super-block backups (for fsck -b #) at:
 ...
 fsck -f /mnt2
 ...
 mount /mnt2
 chdir /mnt2
 df .
 Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 /dev/ccd1g   17200329        1 16340312     0%    /mnt2
 chdir /
 umount /mnt2
 fsck -f /mnt2
 ** /dev/rccd1g
 ** File system is already clean
 ** Last Mounted on /mnt2
 ** Phase 1 - Check Blocks and Sizes
 text fault: pc=0x0 sfsr=364 sfva=0x0
 panic: kernel fault
 Stopped at      _Debugger:      ta              %icc, 0x1
 ddb> trace
 gcc2_compiled.(0x1, 0x364, 0x0, 0x0, 0x0, 0xf80e5f00) at gcc2_compiled.+0xf78
 memfault_sun4m(0xf80e5fb0, 0x0, 0x90, 0xf80ac2a8, 0xf80e5f40, 0xf80ac310) at me
 mfault_sun4m+0xd8
 _sparc_interrupt_common(0x0, 0x0, 0xf80080cc, 0x0, 0xffffffff, 0xea25e) at _spa
 rc_interrupt_common+0x104
 gcc2_compiled.(0xd2a, 0xfa232350, 0xf810bd50, 0xf810bed8, 0xf8c43198, 0xf87a4cf
 4) at gcc2_compiled.+0xc74
 gcc2_compiled.(0x0, 0x11, 0xf80276a8, 0x0, 0x312e30, 0x800000) at gcc2_compiled
 .+0x4e4
 gcc2_compiled.(0x0, 0xf8c43198, 0xe000, 0x100000, 0xf8027bfc, 0xfa233e98) at gc
 c2_compiled.+0x2c0
 gcc2_compiled.(0x1716, 0xfa233e98, 0x0, 0xf8015058, 0x0, 0x2) at gcc2_compiled.
 +0x1644
 gcc2_compiled.(0xfa233df0, 0xf805aac0, 0xf8636000, 0x4b000, 0x56f, 0x1) at gcc2
 _compiled.+0x5b4
 _ufs_chown(0xfa233df0, 0xf8084868, 0x4, 0x4, 0xf87c7280, 0xfa233fb0) at _ufs_ch
 own+0x2720
 gcc2_compiled.(0x0, 0xfa233e98, 0xf87c7280, 0xf8057e74, 0xf87aee00, 0x6e) at gc
 c2_compiled.+0xb38
 gcc2_compiled.(0x9, 0xfa233f28, 0xfa233f20, 0xf8034490, 0xe, 0x40e78e) at gcc2_
 compiled.+0xc8
 gcc2_compiled.(0x3, 0xfa233fb0, 0x0, 0x2da, 0x1, 0x625c6000) at gcc2_compiled.+0x14f0
 syscall(0x4, 0x1266000, 0xe000, 0x0, 0x200, 0x3b8000) at syscall+0xb8
 ------------------------------------------------------------------------------
 ccdconfig -g
 ccd1		16	8	/dev/sd7g /dev/sd9g /dev/sd12g
 newfs /dev/rccd1g
 Warning: Block size and bytes per inode restrict cylinders per group to 5.
 /dev/rccd1g:	13284800 sectors in 722 cylinders of 32 tracks, 575 sectors
 	6486.7MB in 145 cyl groups (5 c/g, 44.92MB/g, 10816 i/g)
 ...
 chdir /
 fsck -f /mnt2
 ...
 mount /mnt2
 chdir /mnt2
 df .
 Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 /dev/ccd1g    6444021        1  6121819     0%    /mnt2
 chdir /
 umount /mnt2
 fsck -f /mnt2
 ...
 mount /mnt2
 chdir /mnt2
 (chdir /mnt; tar cf - .) | tar xpf -
 df .
 Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 /dev/sd2g      625498   429402   164822    72%    /mnt
 chdir /
 umount /mnt2
 fsck -f /mnt2
 ...
 mount /mnt2
 chdir /mnt2
 rm -rf *
 df .
 Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 /dev/ccd1g    6444021        1  6121819     0%    /mnt2
 chdir /
 umount /mnt2
 fsck -f /mnt2
 ...
 mount /mnt2
 (chdir /mnt; tar cf - . ) | tar xpf -
 df .
 Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
 /dev/sd2g      625498   429402   164822    72%    /mnt
 chdir /
 umount /mnt2
 fsck -f /mnt2
 ** /dev/rccd1g
 ** File system is already clean
 ** Last Mounted on /mnt2
 ** Phase 1 - Check Blocks and Sizes
 ccd1: error 5 on component 2
 
 CANNOT READ: BLK 8760160
 CONTINUE? [yn] Jan 14 12:10:21 n /bsd: ccd1: error 5 on component 2
 Jan 14 12:10:21 n /bsd: ccd1: error 5 on component 2
 
 CONTINUE? [yn] n
 
 Program terminated
 
 n.nts# fsck -f /mnt2~** /dev/rccd1g
 ** File system is already clean
 ** Last Mounted on /mnt2
 ** Phase 1 - Check Blocks and Sizes
 ** Phase 2 - Check Pathnames
 ** Phase 3 - Check Connectivity
 ** Phase 4 - Check Reference Counts
 ** Phase 5 - Check Cyl groups
 29492 files, 429403 used, 6014618 free (5482 frags, 751142 blocks, 0.1% fragmentation)