From: Ian Campbell <ian.campbell@citrix.com>
To: 高强 <mrgao.buffoon@gmail.com>, xen-devel@lists.xenproject.org
Subject: Re: help for snapshot
Date: Tue, 13 Oct 2015 10:09:27 +0100 [thread overview]
Message-ID: <1444727367.23192.11.camel@citrix.com> (raw)
In-Reply-To: <CAJR0vrHqPR0HUUoASUVnZHimkFRQoKE40mTHO8rVB0yA11hdNQ@mail.gmail.com>
On Tue, 2015-10-13 at 09:18 +0800, 高强 wrote:
> Hi,alls
>
> I'm modifying the source code of xen-4.4.1. Specifically, I'm modifying
> the memory copy part of snapshot. I first put all memory pages to write
> protection, and then rewrite the write protection exception part of the
> code. After capture the exception then save the memory page , and all
> memory page copy is complete, call the function xenaccess_teardown(xch,
> xenaccess), but there is a mistake:
>
> libxl: error: libxl_utils.c:396:libxl_read_exactly: file/stream truncated
> reading ipc msg header from domain 3 save/restore helper stdout pipe
> libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 3
> save/restore helper [-1] died due to fatal signal Segmentation fault
> (core dumped)
> Failed to save domain, resuming domain
>
> Has anyone ever meet this kind of problem, and who can tell me the cause
> of the error.
Without knowing exactly what you have changed, probably not.
Ian.
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next prev parent reply other threads:[~2015-10-13 9:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-13 1:18 help for snapshot 高强
2015-10-13 5:49 ` Gohar Irfan
2015-10-13 6:26 ` 高强
2015-10-13 9:09 ` Ian Campbell [this message]
-- strict thread matches above, loose matches on Subject: below --
2015-10-13 6:33 高强
2015-10-20 9:19 高强
2015-10-21 3:06 高强
2015-10-21 9:00 ` Wei Liu
2015-10-21 9:07 ` Ian Campbell
2015-10-21 9:18 ` Dario Faggioli
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