Re: [PATCH] iohelper: Don't try to fdatasync(stdout)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 11/05/2012 06:21 AM, Christophe Fergeau wrote:
> After upgrading to libvirt 1.0.0, I've started getting warnings
> from libvirt:
> (gnome-boxes:5965): Libvirt.GObject-CRITICAL **: cannot finish stream:
> internal error libvirt_iohelper: unable to fsync stdout: Invalid argument
> 
> On further investigation, in iohelper.c:runIO(), fdatasync can get called
> on STDOUT_FILENO, which indeed returns EINVAL when this happens. After
> making sure that fdout is not STDOUT_FILENO, this warning goes away.
> ---
>  src/util/iohelper.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

NACK.  It is not because we are calling fdatasync(1), but because fd 1
happens to be something that is not syncable (perhaps a pipe).  We need
to figure out the real condition on when fd 1 is syncable, and skip the
error in the case where it is a pipe or some other non-syncable fd, and
not based on some magic exemption of just fd 1 without even knowing why
we are failing.

-- 
Eric Blake   eblake@xxxxxxxxxx    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

Attachment: signature.asc
Description: OpenPGP digital signature

--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list

[Index of Archives]     [Virt Tools]     [Libvirt Users]     [Lib OS Info]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [KDE Users]     [Fedora Tools]