Messages in this thread | | | Subject | Re: [Nbd] [PATCH 3/3]nbd: make nbd device wait for its users | From | Eric Blake <> | Date | Fri, 24 Jun 2016 07:42:28 -0600 |
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On 06/24/2016 04:09 AM, Pranay Kr. Srivastava wrote: > When a timeout occurs or a recv fails, then > instead of abruplty killing nbd block device
s/abruplty/abruptly/
> wait for it's users to finish.
s/it's/its/
> > This is more required when filesystem(s) like > ext2 or ext3 don't expect their buffer heads to > disappear while the filesystem is mounted. > > Each open of a nbd device is refcounted, while > the userland program [nbd-client] doing the > NBD_DO_IT ioctl would now wait for any other users > of this device before invalidating the nbd device. > > A timedout or a disconnected device, if in use, can't > be used until it has been resetted. The resetting happens
s/resetted/reset/
> when all tasks having this bdev open closes this bdev. > > Signed-off-by: Pranay Kr. Srivastava <pranjas@gmail.com> > --- > drivers/block/nbd.c | 124 ++++++++++++++++++++++++++++++++++++++++------------ > 1 file changed, 96 insertions(+), 28 deletions(-) >
-- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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