Subject: ffs crash after raid reconfiguration
To: None <>
From: Kazushi (Jam) Marukawa <>
List: current-users
Date: 07/21/2001 03:23:33

Today, after a fault of one disk in a four disks raid5
system, I removed the disk and started the system.  I forgot
to start it in single user mode.  The system failed the auto
raid configuration because of miss alignment (my drives are
IDE).  It also failed the fsck because of the failure of
auto raid configuration.  The system started the signle user
mode.  I changed raid configuration file and reconfigured
the system with "raidctl -c raid0.conf raid0".  I mounted
raid0 without fsck because it was clean.  I exited from the
single user mode.  The system became available without
reboot.  I started my job.  Then, the sytem was crashed with
following message and trace.

start = 2187, len = 117, fs = /home
offset=824 824
panic: ffs_alloccg: map corrupted
Stopped in pid 524 (ftp) at     cpu_Debugger+0x4:      leave
db> trace
cpu_Debugger(0,88c,88b,d3e70a08,c0323489) at cpu_Debugger+0x4
panic(c04af92e,c04af91f,338,338,4458) at panic+0xa0
ffs_mapsearch(c0b72000,cf07c000,4458,8,2000) at ffs_mapsearch+0x18d
ffs_alloccgblk(d3f2fb5c,c5ca3b20,4458,8b8,c0b72000) at ffs_alloccgblk+0x36d
ffs_alloccg(d3f2fb5c,8b8,2740458,2000,10) at ffs_alloccg+0xf0
ffs_hashalloc(d3f2fb5c,8b8,2740458,2000,c03219c8) at ffs_hashalloc+0x23
ffs_alloc(d3f2fb5c,35,2740458,2000,c0c88880) at ffs_alloc+0xcb
ffs_balloc(d3e70c54,5a8,d3e70cf0,0,c049c740) at ffs_balloc+0xa3b
VOP_BALLOC(d3d1737c,6a000,0,5a8,c0c88880) at VOP_BALLOC+0x4c
ffs_ballocn(d3e70cf0,d3d1737c,d3e70d48,d3d17424,c049c780) at ffs_ballocn+0x9b
VOP_BALLOCN(d3d1737c,6a000,0,5a8,0) at VOP_BALLOCN+0x4c
ufs_balloc_range(d3d1737c,6a000,0,5a8,0) at ufs_balloc_range+0x2f3
ffs_write(d3e70e78,1,c049c020,d3d1737c,d3e70f04) at ffs_write+0x208
VOP_WRITE(d3d17c,d3e70f04,1,c0c88880,d3d1737c) at VOP_WRITE+0x38
vn_write(d3df2904,d3df2920,d3e70f04,c0c88880,1) at vn_write+0x9e
dofilewrite(d3e2dc88,6,d3df2904,8088000,5a8) at dofilewrite+0x94
sys_write(d3e2dc88,d3e70f80,d3e70f78) at sys_write+0x40
syscall_plain(1f,1f,1f,1f,805f041) at syscall_plain+0x98
db> c
syncing disks... panic: lockmgr: locking against myself
Stopped in pid 524 (ftp) at     cpu_Debugger+0x4:
db> reboot

I guess there may be a problem around the raid
reconfiguration.  Today and last time, I experienced panics
when I start the system without reboot after the
reconfiguration.  I may be wrong, but could someone check
the codes?  Thanks.

  NetBSD 1.5W NetBSD 1.5W (sou) #7: Tue Jul 17 04:12:37 CDT 2001 i386
  And, I'm using softdep for this raid system this time.

-- Kazushi
Newlan's Truism:
	An "acceptable" level of unemployment means that the government
economist to whom it is acceptable still has a job.