search for: aio_read

...+if ! test -f file-data; then + echo "$0: missing file-data" + exit 77 +fi +if ! qemu-io --version; then + echo "$0: missing qemu-io" + exit 77 +fi # Sanity check that qemu-io can issue parallel requests -$QEMU_IO -f raw -c "aio_write -P 2 1 1" -c "aio_read -P 1 0 1" -c aio_flush \ - file-data || { echo "'$QEMU_IO' can't drive parallel requests"; exit 77; } +qemu-io -f raw -c "aio_write -P 2 1 1" -c "aio_read -P 1 0 1" -c aio_flush \ + file-data || { echo "'qemu-io' can't drive parallel...

...write -P 2 512 512" \ # With --threads=1, the write should complete first because it was issued first nbdkit -v -t 1 -U - --filter=delay file test-parallel-file.data \ - wdelay=2 rdelay=1 --run 'qemu-io -f raw -c "aio_write -P 2 512 512" \ - -c "aio_read -P 1 0 512" -c aio_flush $nbd' | + wdelay=2 rdelay=1 --run 'timeout 10s </dev/null qemu-io -f raw \ + -c "aio_write -P 2 512 512" -c "aio_read -P 1 0 512" -c aio_flush $nbd' | tee test-parallel-file.out if test "$(grep '512/512' test-pa...

I tried reproducing the testsuite failure on test-parallel-*.sh using the same machine Rich posted a log from, but did not quickly hit it on a loop of make -j20 check TESTS=test-parallel-{file,nbd}.sh But I still think this series can't hurt. Eric Blake (2): nbd: Don't advertise writes if nbdkit is readonly tests: Make parallel tests more robust plugins/nbd/nbd.c | 2 ++

...ing file-data"; exit 77; } +# Makefile sets $QEMU_IO, but it's also nice if the script runs again +# standalone afterwards for diagnosing any failures : ${QEMU_IO=qemu-io} -# Sanity check that qemu-io can issue parallel requests -$QEMU_IO -f raw -c "aio_write -P 2 1 1" -c "aio_read -P 1 0 1" -c aio_flush \ - file-data || { echo "'$QEMU_IO' can't drive parallel requests"; exit 77; } +trap 'rm -f test-parallel-file.data test-parallel-file.out' 0 1 2 3 15 + +# Populate file, and sanity check that qemu-io can issue parallel requests +printf ...

Currently we test for qemu-img, socat, ss, certtool, etc at run time, but we test for qemu-io at compile time (in ./configure). This commit removes this inconsistency. I would consider the opposite patch (which makes qemu-img etc tested at configure time). The main advantage of testing for these binaries at run time is that tests are not "silently" omitted. Instead tests with

Either patch 1 or patch 2 in isolation is sufficient to fix the problem that Rich forwarded on from an archlinux tester (name so I can credit them?). But both patches should be applied, as well as backported to appropriate stable branches, to maximize cross-version interoperability of nbdkit vs. plugins. Patch 3 will let us detect future similar bugs much faster. I want patch 4 to ensure that

...as issued first nbdkit -v -t 1 -U - --filter=delay file file=test-parallel-file.data \ - wdelay=2 rdelay=1 --run '$QEMU_IO -f raw -c "aio_write -P 2 512 512" \ + wdelay=2 rdelay=1 --run 'qemu-io -f raw -c "aio_write -P 2 512 512" \ -c "aio_read -P 1 0 512" -c aio_flush $nbd' | tee test-parallel-file.out if test "$(grep '512/512' test-parallel-file.out)" != \ @@ -62,7 +68,7 @@ fi # With default --threads, the faster read should complete first nbdkit -v -U - --filter=delay file file=test-parallel-file.da...

Small reworking of tests to remove $QEMU_IO, making that consistent with other test tools, and to test IPv6 connections.

This works OK on x86_64, but fails on our fast new Amberwing (aarch64) machine. I've attached the test-suite.log file, but I'm not very sure what's going wrong from that. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to

From: Zach Brown <zab@zabbo.net> ocfs2''s .aio_read and .aio_write methods are changed to take iov_iter and pass it to generic functions. Wrappers are made to pack the iovecs into iters and call these new functions. Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Cc: Zach Brown <zab@zabbo.net> Cc: Mark Fasheh <mfasheh@suse.c...

when installing samba from FreeBSD ports collection, I can choose AIO support, which leads to ... checking whether to support asynchronous io... yes checking for aio_read in -lrt... no checking for asynchronous io support... no checking for 64-bit asynchronous io support... no does it mean aio was not enabled ? Cheers, Ilia Chipitsine

...+x test-parallel-sh.script + +# With --threads=1, the write should complete first because it was issued first +nbdkit -v -t 1 -U - --filter=delay sh test-parallel-sh.script \ + wdelay=2 rdelay=1 --run 'qemu-io -f raw -c "aio_write -P 2 512 512" \ + -c "aio_read -P 1 0 512" -c aio_flush $nbd' | + tee test-parallel-sh.out +if test "$(grep '512/512' test-parallel-sh.out)" != \ +"wrote 512/512 bytes at offset 512 +read 512/512 bytes at offset 0"; then + exit 1 +fi + +# With default --threads, the faster read should com...

...> wrote 1/1 bytes at offset 1 > 1 bytes, 1 ops; 0.0203 sec (49.193231 bytes/sec and 49.1932 ops/sec) > /var/tmp/nbdkit-1.1.18/src/nbdkit -v -t 1 -U - > /var/tmp/nbdkit-1.1.18/plugins/file/.libs/nbdkit-file-plugin.so file=file-data rdelay=2 wdelay=1 --run > $QEMU_IO -f raw -c "aio_read 0 1" -c "aio_write -P 2 1 1" -c aio_flush $nbd > > nbdkit: file[1]: debug: handshake complete, processing requests serially When run serially, > read 1/1 bytes at offset 0 > 1 bytes, 1 ops; 0:00:02.00 (0.499933 bytes/sec and 0.4999 ops/sec) > wrote 1/1 bytes at off...

...tten = generic_file_buffered_write_iter(iocb, iter, *ppos, + ppos, count, 0); current->backing_dev_info = NULL; } @@ -2520,7 +2514,7 @@ static ssize_t ocfs2_file_splice_read(struct file *in, in->f_path.dentry->d_name.name, len); /* - * See the comment in ocfs2_file_aio_read() + * See the comment in ocfs2_file_read_iter() */ ret = ocfs2_inode_lock_atime(inode, in->f_path.mnt, &lock_level); if (ret < 0) { @@ -2535,19 +2529,18 @@ bail: return ret; } -static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, - const struct iovec *iov, - uns...

...pt > + > +# With --threads=1, the write should complete first because it was issued first > +nbdkit -v -t 1 -U - --filter=delay sh test-parallel-sh.script \ > + wdelay=2 rdelay=1 --run 'qemu-io -f raw -c "aio_write -P 2 512 512" \ > + -c "aio_read -P 1 0 512" -c aio_flush $nbd' | > + tee test-parallel-sh.out > +if test "$(grep '512/512' test-parallel-sh.out)" != \ > +"wrote 512/512 bytes at offset 512 > +read 512/512 bytes at offset 0"; then > + exit 1 > +fi > + > +# With defau...

depends on "autoconf: regenerate configure scripts with 4.4 version" This series removes some of the really old deadwood from the tools build and makes some other things which are on their way out configurable at build time with a default depending on how far down the slope I judge them to be. * nuke in tree copy of libaio * nuke obsolete tools: xsview, miniterm, lomount & sv *

...elay> in order to use these parameters. =back diff --git a/tests/test-parallel-file.sh b/tests/test-parallel-file.sh index 79a60ac..b9e5f40 100755 --- a/tests/test-parallel-file.sh +++ b/tests/test-parallel-file.sh @@ -49,7 +49,7 @@ $QEMU_IO -f raw -c "aio_write -P 2 1 1" -c "aio_read -P 1 0 1" -c aio_flush \ trap 'rm -f test-parallel-file.out' 0 1 2 3 15 # With --threads=1, the write should complete first because it was issued first -nbdkit -v -t 1 -U - file file=file-data wdelay=2 rdelay=1 --run ' +nbdkit -v -t 1 -U - --filter delay file file=file-data wde...

...abcb918 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1197,6 +1197,7 @@ static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma) const struct file_operations btrfs_file_operations = { .llseek = generic_file_llseek, .read = do_sync_read, + .write = do_sync_write, .aio_read = generic_file_aio_read, .splice_read = generic_file_splice_read, .aio_write = btrfs_file_aio_write, -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger....

With this, I am finally able to get the nbd plugin to do out-of-order responses to the client. Once this series goes in, we should be ready for Rich to cut a release. Eric Blake (4): nbd: Split reading into separate thread nbd: Protect writes with mutex nbd: Enable parallel handling tests: Test parallel nbd behavior plugins/nbd/nbd.c | 217

...make the special features of btrfs work well through the common dio code. My design places all btrfs directIO inside btrfs below the vfs layer. Note that my current code is based on the .31 address_space_operations, which Jens is changing. To avoid conflicts, I might hook at the file_operations .aio_read which may make more sense anyway if btrfs is doing its own thing. Aside from being completely inside btrfs, the unique part of this design is it is extent based and all the flow is done to optimize for the way I think btrfs handles extents. -- what seems to work now (under ideal conditions) ---...