From: Kevin Wolf <kwolf@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Eric Blake <eblake@redhat.com>,
"Richard W.M. Jones" <rjones@redhat.com>,
Anthony Liguori <anthony@codemonkey.ws>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] block: Add -drive detect_zero=on|off option to detect all zero writes.
Date: Mon, 30 Jul 2012 16:38:25 +0200 [thread overview]
Message-ID: <50169C61.3010800@redhat.com> (raw)
In-Reply-To: <5016959C.5070004@redhat.com>
Am 30.07.2012 16:09, schrieb Paolo Bonzini:
> Il 30/07/2012 16:03, Eric Blake ha scritto:
>> Ooh, nice bullet point to add to my upcoming presentation at Linux
>> Plumber's Conference in a month:
>> http://summit.linuxplumbersconf.org/lpc-2012/meeting/33/lpc2012-ref-improved-virt-disk-handling/
>>
>> Does anyone else have some annoyances about large sparse file handling
>> where improving the kernel would make our life easier, that I should
>> incorporate into my discussion?
>
> In case you haven't mentioned them:
>
> * lseek(SEEK_HOLE/SEEK_DATA) support in the block layer using GET LBA
> STATUS.
>
> * support for connecting to an iSCSI target without scanning partitions.
>
> * support for fsync/fdatasync with ranges (or alternatively,
> sync_file_range that writes metadata).
In the context of libguestfs we recently found this one:
* sync() should actually flush the disk caches
Kevin
next prev parent reply other threads:[~2012-07-30 14:38 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 15:59 [Qemu-devel] [PATCH] Detect zero writes (for discussion only, not to be applied) Richard W.M. Jones
2012-07-26 15:59 ` [Qemu-devel] [PATCH] block: Add -drive detect_zero=on|off option to detect all zero writes Richard W.M. Jones
2012-07-27 13:58 ` Anthony Liguori
2012-07-27 19:01 ` Paolo Bonzini
2012-07-30 13:51 ` Richard W.M. Jones
2012-07-30 13:57 ` Paolo Bonzini
2012-07-30 14:03 ` Eric Blake
2012-07-30 14:09 ` Paolo Bonzini
2012-07-30 14:38 ` Kevin Wolf [this message]
2012-07-30 15:52 ` Richard W.M. Jones
2012-07-27 13:55 ` [Qemu-devel] [PATCH] Detect zero writes (for discussion only, not to be applied) Anthony Liguori
2012-07-27 15:14 ` Richard W.M. Jones
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