to resolve errors which can cause corruption on recovery with the old
synchronous mechanism.
- Append partial truncation freework structures to indirdeps while
truncation is proceeding. These prevent new block pointers from
becoming valid until truncation completes and serialize truncations.
- On completion of a partial truncate journal work waits for zeroed
pointers to hit indirects.
- softdep_journal_freeblocks() handles last frag allocation and last
block zeroing.
- vtruncbuf/ffs_page_remove moved into softdep_*_freeblocks() so it
is only implemented in one place.
- Block allocation failure handling moved up one level so it does not
proceed with buf locks held. This permits us to do more extensive
reclaims when filesystem space is exhausted.
- softdep_sync_metadata() is broken into two parts, the first executes
once at the start of ffs_syncvnode() and flushes truncations and
inode dependencies. The second is called on each locked buf. This
eliminates excessive looping and rollbacks.
- Improve the mechanism in process_worklist_item() that handles
acquiring vnode locks for handle_workitem_remove() so that it works
more generally and does not loop excessively over the same worklist
items on each call.
- Don't corrupt directories by zeroing the tail in fsck. This is only
done for regular files.
- Push a fsync complete record for files that need it so the checker
knows a truncation in the journal is no longer valid.
Discussed with: mckusick, kib (ffs_pages_remove and ffs_truncate parts)
Tested by: pho
partially added a name. Allow ufs_direnter() to continue in the
hopes that it is a transient error. If it is not, the directory
is corrupted already from IO errors and writing this new block
is not likely to make things worse.
- Fix races on setting AAC_AIFFLAGS_ALLOCFIBS
- Remove some unused AAC_IFFLAGS_* bits.
Please note that the kthread still makes a difference between the
total mask and AAC_AIFFLAGS_ALLOCFIBS because more flags may be
added in the future to aifflags.
Sponsored by: Sandvine Incorporated
Reported and reviewed by: emaste
MFC after: 2 weeks
OpenSolaris and ZFS header files. These changes are sufficient
to allow a C++ program to use the libzfs library.
Note: The majority of these files already included 'extern "C"'
declarations, so the intention of providing C++ compatibility
already existed even if it wasn't provided.
cddl/compat/opensolaris/include/assert.h:
Wrap our compatibility assert implementation in
'extern "C"'. Since this is a compatibility header
I matched the Solaris style of doing this explicitly
rather than rely on FreeBSD's __BEGIN/END_DECLS macro.
sys/cddl/compat/opensolaris/sys/kstat.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/arc.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_pool.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/ddt.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h:
Rename parameters in function declarations that conflict
with C++ keywords. This was the solution preferred by
members of the Illumos community.
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_ioctl.h:
In C, nested structures are visible in the global namespace,
but in C++, they take on the namespace of the structure in
which they are contained. Flatten nested structure
definitions within struct zfs_cmd so these structures are
visible in the global namespace when compiled in both
languages.
Sponsored by: Spectra Logic Corporation
POSIX says an empty entry in CDPATH shall not result in the new directory
being printed, while any non-empty entry shall result in the new directory
being printed, including ".". Therefore, the value of CDPATH should almost
always start with a colon, not dot and colon.
Our sh does not print the name for empty entries as well as "." entries.
MFC after: 1 week
The function name expandstr() and the general idea of doing this kind of
expansion by treating the text as a here document without end marker is from
dash.
All variants of parameter expansion and arithmetic expansion also work (the
latter is not required by POSIX but it does not take extra code and many
other shells also allow it).
Command substitution is prevented because I think it causes too much code to
be re-entered (for example creating an unbounded recursion of trace lines).
Unfortunately, our LINENO is somewhat crude, otherwise PS4='$LINENO+ ' would
be quite useful.
did not free memory (1) or close the file descriptor (2) in error cases.
Reported by: Mark Johnston (1)
Reported by: attilio (2)
Reviewed by: jhb
Sponsored by: Sandvine Incorporated
MFC after: 1 week
but has only 2 SATA ports instead of 4. The worst part is that SStatus and
SError registers for missing ports are not implemented and return wrong
values (0xffffffff), that caused infinite reset loop.
Just ignore that SError value while I found no better way to identify them.
- Re-add accidentally removed atomic op. for sysctl(9) handler.
- Remove a period(`.') at the end of a debugging message.
- Consistently spell "low" for "TSC-low" timecounter throughout.
Pointed out by: bde
increase robustness (no more calls to panic(9)) and simplify
code.
- Allocate RX/TX data structures as a single buffer rather than
an array of 4KB pages to simplify code.
- Fixed LRO (aka TPA) code. Removed kernel module parameter and
support enabling disabling LRO through ifconfig(8) command line.
LRO is still disabled by default but should be enabled for best
performance on an endpoint device.
- Fixed statistcs code and removed kernel module parameter (stats
should just work).
- Added many software counters to help identify the cause of some
performance issues.
- Streamlined adapter internal init/stop code paths.
- Fiddled with debug code (adding some here, removing some there).
- Continued style(9) adjustments.
invariant. For SMP case (TSC-low), it also has to pass SMP synchronization
test and the CPU vendor/model has to be white-listed explicitly. Currently,
all Intel CPUs and single-socket AMD Family 15h processors are listed here.
Discussed with: hackers
TSC timecounter if TSC frequency is higher than ~4.29 MHz (or 2^32-1 Hz) or
multiple CPUs are present. The "TSC-low" frequency is always lower than a
preset maximum value and derived from TSC frequency (by being halved until
it becomes lower than the maximum). Note the maximum value for SMP case is
significantly lower than UP case because we want to reduce (rare but known)
"temporal anomalies" caused by non-serialized RDTSC instruction. Normally,
it is still higher than "ACPI-fast" timecounter frequency (which was default
timecounter hardware for long time until r222222) to be useful.
interleaving.
Signal dumping to happen only for the first panic which should be the
most important.
Sponsored by: Sandvine Incorporated
Submitted by: Nima Misaghian (nmisaghian AT sandvine DOT com)
MFC after: 2 weeks
RFC 4861 6.3.4 clearly defines handling multiple RAs in this way.
- RDNSS/DNSSL options from multiple RAs on a single link will be
gathered and sent to resolvconf(8).
- Call "resolvconf -d" only after at least one RDNSS or DNSSL option is
received and then all of them are expired.
- The rtsold.dump output now supports displaying a list of the RA options.
- Use more human-readable expression for logging values of struct timeval.
Discussed with: ume
- Add retry loops in the i2c read/write functions.
- Combied the ADC channel selection and readout of the value into
one iicbus_transfer to avoid possible races.
Reviewed by: nwhitehorn
whether decapsulated IPsec packets will be passed to pfil again depending
on the setting of the net.ip6.ipsec6.filtertunnel sysctl.
PR: kern/157670
Submitted by: Manuel Kasper (mk neon1.net)
MFC after: 2 weeks
The code has definitely been broken for SCHED_ULE, which is a default
scheduler. It may have been broken for SCHED_4BSD in more subtle ways,
e.g. with manually configured CPU affinities and for interrupt devilery
purposes.
We still provide a way to disable individual CPUs or all hyperthreading
"twin" CPUs before SMP startup. See the UPDATING entry for details.
Interaction between building CPU topology and disabling CPUs still
remains fuzzy: topology is first built using all availble CPUs and then
the disabled CPUs should be "subtracted" from it. That doesn't work
well if the resulting topology becomes non-uniform.
This work is done in cooperation with Attilio Rao who in addition to
reviewing also provided parts of code.
PR: kern/145385
Discussed with: gcooper, ambrisko, mdf, sbruno
Reviewed by: attilio
Tested by: pho, pluknet
X-MFC after: never
This also replaces the local fix in r219209 that made .Ac emit
ASCII angle quotes with an official fix. In the official fix,
ASCII quotes are output when using the .Aq, .Ao and .Ac calls,
but only when nested into the .An macro.
PR: gnu/154822
RSF_FATAL we need to switch to alternate globals for KSTACK_CHECK just
like tl1_data_excptn(_trap) does. This is more or less cosmetic because
in case RSF_FATAL is called we're already heading south.
- Correct an END().
- Read the window state from the correct register for a CATR().
family detection in world, mostly noticed by ifconfig(8), when running with
an old kernel.
Reported by: Andrzej Tobola (ato iem.pw.edu.pl)
Reported by: gcooper
the system to proceed to boot without bailing out into single user mode,
even when the file system can not be successfully mounted.
This option is implemented in mount(8) and not passed into kernel.
MFC after: 1 month
more than three temporary register in several places CATR() is used so
this code trades instructions in for registers. Actually, this still isn't
sufficient and CATR() has the side-effect of clobbering %y. Luckily, with
the current uses of CATR() this either doesn't matter or we are able to
(save and) restore it.
Now that there's only one use of AND() and TEST() left inline these.
