* Juan Francisco Cantero Hurtado <[email protected]> le [20-01-2019 23:39:45
+0100]:
> On Sun, Jan 20, 2019 at 07:24:44PM +0100, Karel Gardas wrote:
> >
> > Based on my experience, softdep may be very fragile on the fast system with
> > slow drive. I guess what you see may be softdep own issue.
>
> The panic is in softdep but he had also a crash without softdep.
>
True.
Without softdep, I can't get access to the console (or didn't manage
to).
I ran fsck -yf on the disk via on an amd64 machine as suggested.
(Though, crash happens on arm64).
Everything seems ok.
moria# fsck -fy /dev/sd2a
** /dev/rsd2a
** File system is already clean
** Last Mounted on /vol/Samsung SSD 850-p1
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
20863 files, 1492748 used, 37517771 free (739 frags, 4689629 blocks,
0.0% fragme
moria# fsck -fy /dev/sd2d
** /dev/rsd2d
** File system is already clean
** Last Mounted on /vol/Samsung SSD 850-p2
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
4 files, 4 used, 1034203 free (35 frags, 129271 blocks, 0.0%
fragmentation)
moria# fsck -fy /dev/sd2e
** /dev/rsd2e
** File system is already clean
** Last Mounted on /vol/Samsung SSD 850-p3
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
26838 files, 2769562 used, 98993405 free (381 frags, 12374128 blocks,
0.0% fragmentation)
I had to crash the server at least 5 times to get an access to the
console. Else, all I was able to do was a hard reboot.
Here the ddb output after a new crash.
/var: got error 5 while accessing filesystem
panic: softdep_deallocate_dependencies: unrecovered I/O error
Stopped at panic+0x154: TID PID UID PRFLAGS
PFLAGS C
PU COMMAND
161990 94125 0 0x14000 0x200 0 zerothread
*365345 9753 0 c+0x150
panic() at brelse+0xc4
brelse() at sd_buf_done+0x124
sd_buf_done() at scsi_done+0x34
scsi_done() at usb_transfer_complete+0x238
usb_transfer_complete() at ehci_abort_xfer+0x258
ehci_abort_xfer() at ehci_timeout_task+0x34
https://www.openbsd.
ddb{1}>
ddb{1}> trace
db_enter() at panic+0x150
panic() at brelse+0xc4
brelse() at sd_buf_done+0x124
sd_buf_done() at scsi_done+0x34
scsi_done() at usb_transfer_complete+0x238
usb_transfer_complete() at ehci_abort_xfer+0x258
ehci_abort_xfer() at ehci_timeout_task+0x34
ehci_timeout_task() at usb_abort_task_thread+0xcc
usb_abort_task_thread() at proc_trampoline+0x10
ddb{1}> show panic
softdep_deallocate_dependencies: unrecovered I/O error
ddb{1}> show uvm
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
988985 VM pages: 110183 active, 132343 inactive, 0 wired, 438054 free
(52331 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=32966, free-target=43954, inactive-target=89584,
wired-max=329661
faults=67079988, trap53705(153706), anget(retries)=20911670(0),
amapcopy=1415
0766
neighbor anon/obj pg=1580327/34256987,
gets(lock/unlock)=29150164/153708
cases: anon=19467283, anoncow=1444387, obj=26419482,
prcopy=2730679, przero
=17018267
daemon and swap counet=0
nswapdev=1
swpages=145355, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffff8000b10ed0
ddb{1}>
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
988985 VM pages: 110183 active, 132343 inactive, 0 wired, 438054 free
(52331 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=32966, free-target=43954, inactive-target=89584,
wired-max=329661
faults=67079988, trap)=153705(153706), anget(retries)=20911670(0),
amapcopy=1415
0766
neighbor anon/obj pg=1580327/34256987,
gets(lock/unlock)=29150164/153708
cases: anon=19467283, anoncow=1444387, obj=26419482,
prcopy=2730679, przero
=17018267
daemon and swap cget=0
nswapdev=1
swpages=145355, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffff8000b10ed0
ddb{1}>
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
988985 VM pages: 110183 active, 132343 inactive, 0 wired, 438054 free
(52331 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=32966, free-target=43954, inactive-target=89584,
wired-max=329661
faults=67079988, traps(total)=153705(153706),
anget(retries)=20911670(0), amapcopy=1415
0766
neighbor anon/obj pg=1580327/34256987,
gets(lock/unlock)=29150164/153708
cases: anon=19467283, anoncow=1444387, obj=26419482,
prcopy=2730679, przero
=17018267
daemon and nswget=0
nswapdev=1
swpages=145355, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffff8000b10ed0
ddb{1}>
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
988985 VM pages: 110183 active, 132343 inactive, 0 wired, 438054 free
(52331 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=32966, free-target=43954, inactive-target=89584,
wired-max=329661
faults=67079988, trap153705(153706), anget(retries)=20911670(0),
amapcopy=1415
0766
neighbor anon/obj pg=1580327/34256987,
gets(lock/unlock)=29150164/153708
cases: anon=19467283, anoncow=1444387, obj=26419482,
prcopy=2730679, przero
=17018267
daemon and swap couget=0
nswapdev=1
swpages=145355, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffff8000b10ed0
ddb{1}>
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
988985 VM pages: 110183 active, 132343 inactive, 0 wired, 438054 free
(52331 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=32966, free-target=43954, inactive-target=89584,
wired-max=329661
faults=67079988, trap(153706), anget(retries)=20911670(0),
amapcopy=1415
0766
neighbor anon/obj pg=1580327/34256987,
gets(lock/unlock)=29150164/153708
cases: anon=19467283, anoncow=1444387, obj=26419482,
prcopy=2730679, przero
=17018267
daemon and swap counts:
ddb{1}> show bcstats
Current Buffer Cache status:
numbufs 24906 busymapped 135, delwri 35
kvaslots 6553 avail kva slots 6418
bufpages 197730, dmapages 197730, dirtypages 380
pendingreads 2, pendingwrites 129
highflips 0, highflops 0, dmaflips 0
Regards.
