From: Christoph Hellwig <hch@lst.de>
To: Luiz Capitulino <lcapitulino@redhat.com>
Cc: kwolf@redhat.com, aliguori@us.ibm.com, qemu-devel@nongnu.org,
armbru@redhat.com
Subject: Re: [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support
Date: Wed, 3 Aug 2011 18:31:31 +0200 [thread overview]
Message-ID: <20110803163131.GA8411@lst.de> (raw)
In-Reply-To: <1312384765-721-1-git-send-email-lcapitulino@redhat.com>
> It's already possible for QMP clients to implement this feature by using
> the BLOCK_IO_ERROR event. However, the event can be missed. When this
> happens QMP clients need a way to query if any block device has hit a
> no space condition.
We have a mode where we stop the VM when it hits ENOSPC, and that is
the only reliably way to handle it. One that ENOSPC gets returned
to the guest we don't know that it was an ENOSPC, and the guest will
usually simply shut the filesystem down. This could be worked around
by implementing full T10 logical provisioning support, but very few
guests actually support it properly. And it won't work with ide disks
at all, and for virtio we'd have to implement it first.
next prev parent reply other threads:[~2011-08-03 16:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-03 15:19 [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support Luiz Capitulino
2011-08-03 15:19 ` [Qemu-devel] [PATCH 1/5] block: Introduce get_iostatus() device model operation Luiz Capitulino
2011-08-03 15:19 ` [Qemu-devel] [PATCH 2/5] QMP/HMP: Add the 'io-status' field to query-block and info block Luiz Capitulino
2011-08-03 15:19 ` [Qemu-devel] [PATCH 3/5] virtio-blk: Support I/O status Luiz Capitulino
2011-08-03 15:19 ` [Qemu-devel] [PATCH 4/5] ide: " Luiz Capitulino
2011-08-03 15:19 ` [Qemu-devel] [PATCH 5/5] scsi-disk: " Luiz Capitulino
2011-08-03 15:39 ` [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support Kevin Wolf
2011-08-03 18:08 ` Luiz Capitulino
2011-08-04 8:10 ` Kevin Wolf
2011-08-04 9:19 ` Markus Armbruster
2011-08-04 13:42 ` Luiz Capitulino
2011-08-03 16:31 ` Christoph Hellwig [this message]
2011-08-03 18:11 ` Luiz Capitulino
2011-08-03 18:26 ` Christoph Hellwig
2011-08-03 18:36 ` Luiz Capitulino
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110803163131.GA8411@lst.de \
--to=hch@lst.de \
--cc=aliguori@us.ibm.com \
--cc=armbru@redhat.com \
--cc=kwolf@redhat.com \
--cc=lcapitulino@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).