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2015-03-18nbd: Set block size to BDRV_SECTOR_SIZEMax Reitz1-1/+0
Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <1424887718-10800-13-git-send-email-mreitz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-16nbd: Drop BDS backpointerMax Reitz1-17/+17
Before this patch, the "opaque" pointer in an NBD BDS points to a BDRVNBDState, which contains an NbdClientSession object, which in turn contains a pointer to the BDS. This pointer may become invalid due to bdrv_swap(), so drop it, and instead pass the BDS directly to the nbd-client.c functions which then retrieve the NbdClientSession object from there. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423256778-3340-2-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-06nbd: Improve error messagesMax Reitz1-1/+1
This patch makes use of the Error object for nbd_receive_negotiate() so that errors during negotiation look nicer. Furthermore, this patch adds an additional error message if the received magic was wrong, but would be correct for the other protocol version, respectively: So if an export name was specified, but the NBD server magic corresponds to an old handshake, this condition is explicitly signaled to the user, and vice versa. As these messages are now part of the "Could not open image" error message, additional filtering has to be employed in iotest 083, which this patch does as well. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-06-04nbd: implement .bdrv_detach/attach_aio_context()Stefan Hajnoczi1-0/+4
Drop the assumption that we're using the main AioContext. Convert qemu_aio_set_fd_handler() calls to aio_set_fd_handler(). The .bdrv_detach/attach_aio_context() interfaces also need to be implemented to move the socket fd handler from the old to the new AioContext. Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-12-16nbd: pass export name as init argumentMarc-André Lureau1-3/+2
There is no need to keep the export name around, and it seems a better fit as an argument in the init() call. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-12-16Split nbd block client codeMarc-André Lureau1-0/+51
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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