reboot after panic: softdep_deallocate_dependencies: unrecovered I/O error

[Mikhail Holt]

FYI


These issues occurred when doing a
    svn checkout svn://svn0.us-west.freebsd.org/ports/head/ /usr/ports
on a fresh install of:
    FreeBSD 10.0-RELEASE #0 r260789: Fri Jan 17 01:46:25 UTC 2014




Issue 1(intermittent):

    g_vfs_done():ada0p2[WRITE(offset=244201422848, length=32768)]error = 11


Info:

    Jan 20 16:34:39 ns1 kernel: FreeBSD 10.0-RELEASE #0 r260789: Fri Jan 17
01:46:25 UTC 2014
    Jan 20 16:34:39 ns1 kernel:
root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC
i386
    Jan 20 16:34:39 ns1 kernel: FreeBSD clang version 3.3
(tags/RELEASE_33/final 183502) 20130610
    Jan 20 16:34:39 ns1 kernel: CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz
(3014.55-MHz 686-class CPU)
    Jan 20 16:34:39 ns1 kernel: Origin = "GenuineIntel"  Id = 0xf41  Family
= 0xf  Model = 0x4  Stepping = 1
    Jan 20 16:34:39 ns1 kernel:
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
    Jan 20 16:34:39 ns1 kernel:
Features2=0x441d<SSE3,DTES64,MON,DS_CPL,CNXT-ID,xTPR>
    Jan 20 16:34:39 ns1 kernel: TSC: P-state invariant
    Jan 20 16:34:39 ns1 kernel: real memory  = 2147483648 (2048 MB)
    Jan 20 16:34:39 ns1 kernel: avail memory = 2085462016 (1988 MB)
    ...
    Jan 20 16:34:39 ns1 kernel: ada0: <WDC WD3202ABYS-02B7A0 02.03B03>
ATA-8 SATA 2.x device
    Jan 20 16:34:39 ns1 kernel: ada0: Serial Number WD-WCAT1E703838
    Jan 20 16:34:39 ns1 kernel: ada0: 150.000MB/s transfers (SATA 1.x,
UDMA5, PIO 8192bytes)
    Jan 20 16:34:39 ns1 kernel: ada0: 305245MB (625142448 512 byte sectors:
16H 63S/T 16383C)
    ...
    Jan 20 17:34:02 ns1 kernel:
g_vfs_done():ada0p2[WRITE(offset=244201422848, length=32768)]error = 11
    Jan 20 17:34:37 ns1 kernel:
g_vfs_done():ada0p2[WRITE(offset=244201488384, length=32768)]error = 11
    Jan 20 17:34:37 ns1 kernel:
g_vfs_done():ada0p2[WRITE(offset=244201914368, length=32768)]error = 11
    ... many of these messages

    Also relevant:
    Jan 20 17:39:58 ns1 kernel: # tunefs -p /
    Jan 20 17:39:58 ns1 kernel: tunefs: POSIX.1e ACLs:
(-a)                                disabled
    Jan 20 17:39:58 ns1 kernel: tunefs: NFSv4 ACLs:
(-N)                                   disabled
    Jan 20 17:39:58 ns1 kernel: tunefs: MAC multilabel:
(-l)                               disabled
    Jan 20 17:39:58 ns1 kernel: tunefs: soft updates:
(-n)                                 enabled
    Jan 20 17:39:58 ns1 kernel: tunefs: soft update journaling:
(-j)                       enabled
    Jan 20 17:39:58 ns1 kernel: tunefs: gjournal:
(-J)                                     disabled
    Jan 20 17:39:58 ns1 kernel: tunefs: trim:
(-t)                                         disabled
    Jan 20 17:39:58 ns1 kernel: tunefs: maximum blocks per file in a
cylinder group: (-e)  4096
    Jan 20 17:39:58 ns1 kernel: tunefs: average file size:
(-f)                            16384
    Jan 20 17:39:58 ns1 kernel: tunefs: average number of files in a
directory: (-s)       64
    Jan 20 17:39:58 ns1 kernel: tunefs: minimum percentage of free space:
(-m)             8%
    Jan 20 17:39:58 ns1 kernel: tunefs: space to hold for metadata blocks:
(-k)            6408
    Jan 20 17:39:58 ns1 kernel: tunefs: optimization preference:
(-o)                      time
    Jan 20 17:39:58 ns1 kernel: tunefs: volume label: (-L)




Issue 2(repeatable on second similar machine):

    reboot after panic: softdep_deallocate_dependencies: unrecovered I/O
error


Info:
    -    Same hardware
    -    tunefs -j disable

    Jan 20 18:16:21 ns1 kernel: Trying to mount root from ufs:/dev/ada0p2
[rw]...
    Jan 20 18:16:22 ns1 savecore: reboot after panic:
softdep_deallocate_dependencies: unrecovered I/O error
    Jan 20 18:16:22 ns1 savecore: writing core to /var/crash/vmcore.0

    Also relevant:
    Jan 20 18:22:35 ns1 kernel: # tunefs -p /
    Jan 20 18:22:35 ns1 kernel: tunefs: POSIX.1e ACLs:
(-a)                                disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: NFSv4 ACLs:
(-N)                                   disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: MAC multilabel:
(-l)                               disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: soft updates:
(-n)                                 enabled
    Jan 20 18:22:35 ns1 kernel: tunefs: soft update journaling:
(-j)                       disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: gjournal:
(-J)                                     disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: trim:
(-t)                                         disabled
    Jan 20 18:22:35 ns1 kernel: tunefs: maximum blocks per file in a
cylinder group: (-e)  4096
    Jan 20 18:22:35 ns1 kernel: tunefs: average file size:
(-f)                            16384
    Jan 20 18:22:35 ns1 kernel: tunefs: average number of files in a
directory: (-s)       64
    Jan 20 18:22:35 ns1 kernel: tunefs: minimum percentage of free space:
(-m)             8%
    Jan 20 18:22:35 ns1 kernel: tunefs: space to hold for metadata blocks:
(-k)            6408
    Jan 20 18:22:35 ns1 kernel: tunefs: optimization preference:
(-o)                      time
    Jan 20 18:22:35 ns1 kernel: tunefs: volume label: (-L)




Fix for both issues:

    vfs.unmapped_buf_allowed=0 in /boot/loader.conf



Questions:
    -    Known issue?




Thanks
Mikhail