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Re: HAMMER update - 12/31/2007
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From:
Johannes Hofmann <Johannes.Hofmann@...>
To: <kernel@...>
Subject:
Re: HAMMER update - 12/31/2007
Date: Tuesday, January 1, 2008 - 4:29 pm
Matthew Dillon <dillon@apollo.backplane.com> wrote:
quoted text
> HAMMER is progressing well. The filesystem basically works, but there > are some major pieces missing such as, oh, the recovery code, and I > still have a ton of issues to work through... the poor fs blows up > when it runs out of space, for example, due to the horrible spike > implementation I have right now. > > It isn't stable yet but some major milestones have been achieved. I am > able to cpdup, rm -rf, and perform historical queries on deleted data. > > Here is a quick example: > > # newfs_hammer -L TEST -S /var/vkernel/hammerimg.01 /var/vkernel/hammerimg.02 > ... start up vkernel ... > # mount_hammer /dev/vkd2 /dev/vkd3 /mnt > # cpdup / /mnt/copy > # sync > # hammer now > 0x47799042 > # rm -rf /mnt/copy > ... > # cd /mnt/copy@@0x47799042 > [access originally cpdup'd data, even though you deleted it all] > > Please note that HAMMER is *NOT* yet ready for wider testing. Please > don't start reporting bugs yet, because there are still tons of things > for me to work through.
Just had to try it myself. This is way cool! Works as advertised - including the occasional crashes :-) Johannes
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Re: HAMMER update - 12/31/2007
, Johannes Hofmann
, (Tue Jan 1, 4:29 pm)
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