search for: pwrites

See comment for explanation and https://listman.redhat.com/archives/libguestfs/2023-August/032468.html --- tests/Makefile.am | 2 + plugins/sh/call.c | 33 +++++++----- tests/test-sh-pwrite-ignore-stdin.sh | 77 ++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+), 12 deletions(-) diff --git a/tests/Makefile.am b/tests/Makefile.am index

Hi everyone, One of my teammates here at HP uncovered this, and I thought it deserved proactive mention on the list: It covers non-HP builds of Samba, so HP CIFS Server (HP's version of Samba bundled with all 11.0 and above OS'es) customers are not directly affected but those of you on the list who might build Samba yourselves on 11.11 could be affected. Customers building their own

On Sat, Nov 7, 2015 at 5:03 AM, Richard W.M. Jones <rjones@redhat.com> wrote: > How about 'strace mkfs.ext2 ..' and see if any system calls are > returning errors. That would show you whether nbd-client is throwing > errors away, or whether mkfs is getting the errors and ignoring them > (seems pretty unlikely, but you never know). > > After that, it'd be down

Commit-ID: 75895304280f597f46551deb8b87c27ac18a013c Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=75895304280f597f46551deb8b87c27ac18a013c Author: Helge Deller <deller at gmx.de> AuthorDate: Wed, 6 Jan 2016 00:43:50 +0000 Committer: H. Peter Anvin <hpa at linux.intel.com> CommitDate: Tue, 5 Jan 2016 17:45:50 -0800 [klibc] Add pread and pwrite 32bit syscall

ok.. and you did also a .. chmod -R 2770 /path/to/dir The folder you are share-ing also needs 2770 >-----Oorspronkelijk bericht----- >Van: Oliver Werner [mailto:oliver.werner at kontrast.de] >Verzonden: donderdag 19 februari 2015 13:45 >Aan: L.P.H. van Belle >CC: samba at lists.samba.org >Onderwerp: Re: [Samba] Excel and Samba Problem > >I have try it but does not

On Sat, Nov 7, 2015 at 3:02 PM, Richard W.M. Jones <rjones@redhat.com> wrote: >> I'm not sure where to start with hunting down why mkfs's pwrite() >> calls aren't failing. I'd look to the kernel source for that? > > It looks like it's really an e2fsprogs problem, not a kernel problem. > That's pretty surprising - I wasn't expecting it. I

This patch changes pwrite such that it will never return a short write. This is a backwards compatible API change, as checking for short writes remains correct, but redundant. --- daemon/file.c | 20 +++++++++++++------- src/generator.ml | 6 ------ 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/daemon/file.c b/daemon/file.c index da899b6..9ce0783 100644 ---

On 01/16/2018 02:25 AM, Richard W.M. Jones wrote: > I had an idea about how we might do this and still keep a single > .pwrite method for plugins. Maybe it's too complicated but here goes: > > > This is binary-compatible with old plugins, but not source compatible, so: > > > (2) Plugsin may optionally define NBDKIT_PLUGIN_LEVEL before including >

We have an nbdkit plugin that lets you write NBD servers in Python. An example of an existing Python plugin is here: https://github.com/libguestfs/nbdkit/blob/master/plugins/python/example.py#L1 This morning I tried to modify the plugin to use the newer nbdkit API (version 2). One of the things that would change would be passing flags parameters to some functions, eg: def pwrite (h, buf,

On Thu, Aug 31, 2023 at 12:05:17PM +0200, Laszlo Ersek wrote: > On 8/31/23 11:47, Richard W.M. Jones wrote: > > On Thu, Aug 31, 2023 at 11:12:59AM +0200, Laszlo Ersek wrote: > >> On 8/31/23 10:02, Richard W.M. Jones wrote: > >>> > >>> On Wed, Aug 30, 2023 at 05:21:19PM -0500, Eric Blake wrote: > >>>> I hit another transient failure in libnbd

I had an idea about how we might do this and still keep a single .pwrite method for plugins. Maybe it's too complicated but here goes: (1) Rename the pwrite method as pwrite_old1, and add new pwrite method with either the FUA flag or general flags: int (*pread) (void *handle, void *buf, uint32_t count, uint64_t offset); - int (*pwrite) (void *handle, const void *buf, uint32_t count,

On Thu, Aug 31, 2023 at 11:18:27AM +0200, Laszlo Ersek wrote: > On 8/31/23 10:55, Richard W.M. Jones wrote: > > On Thu, Aug 31, 2023 at 10:40:53AM +0200, Laszlo Ersek wrote: > >> On 8/31/23 00:21, Eric Blake wrote: > >>> I hit another transient failure in libnbd CI when a poorly-written > >>> eval script did not consume all of stdin during .pwrite. As

From: "Richard W.M. Jones" <rjones@redhat.com> This patch may be worth squashing? --- docs/nbdkit-filter.pod | 65 +++++++++++++++++++++++++++++++++++++++++++------ include/nbdkit-filter.h | 29 ++++++++++++---------- src/filters.c | 55 ++++++++++++++++++++--------------------- 3 files changed, 101 insertions(+), 48 deletions(-) diff --git a/docs/nbdkit-filter.pod

On Thu, Aug 31, 2023 at 10:52:59AM +0100, Richard W.M. Jones wrote: > > > Other plugins (eg written in C) ignore or > > > only partially consume the buffer in pwrite all the time, and that's > > > never a problem. > > > > I don't understand. > > > > https://libguestfs.org/nbdkit-plugin.3.html#pwrite > > > >

On 8/31/23 10:55, Richard W.M. Jones wrote: > On Thu, Aug 31, 2023 at 10:40:53AM +0200, Laszlo Ersek wrote: >> On 8/31/23 00:21, Eric Blake wrote: >>> I hit another transient failure in libnbd CI when a poorly-written >>> eval script did not consume all of stdin during .pwrite. As behaving >>> as a data sink can be a somewhat reasonable feature of a

In the just-added nbdkit-sh-plugin.pod, you documented that unlike other plugins (where introspection or struct member population) can be used to determine which functionalities are supported, the shell plugin has to implement can_write and friends to return a special status 2 to document not supported, and 3 to indicate false, in part because you can't detect if a pwrite function is

On Thu, Aug 31, 2023 at 10:40:53AM +0200, Laszlo Ersek wrote: > On 8/31/23 00:21, Eric Blake wrote: > > I hit another transient failure in libnbd CI when a poorly-written > > eval script did not consume all of stdin during .pwrite. As behaving > > as a data sink can be a somewhat reasonable feature of a > > quickly-written sh or eval plugin, we should not be so

This applies on top of patches 1 & 2 here (instead of patch 3): https://www.redhat.com/archives/libguestfs/2019-May/msg00206.html https://www.redhat.com/archives/libguestfs/2019-May/msg00207.html Rich.

On Thu, Aug 31, 2023 at 11:12:59AM +0200, Laszlo Ersek wrote: > On 8/31/23 10:02, Richard W.M. Jones wrote: > > > > On Wed, Aug 30, 2023 at 05:21:19PM -0500, Eric Blake wrote: > >> I hit another transient failure in libnbd CI when a poorly-written > >> eval script did not consume all of stdin during .pwrite. As behaving > >> as a data sink can be a

These two very simple patches add a pwrite-device API call. I have been conservative and not yet added the equivalent pread-device call, although that could be added in future. The motivation for this is in virt-resize: We need a way to zap the partition table cleanly[1], and obviously parted isn't working out for us[2]. Using this call we can zap MBR and GPT partition tables by overwriting