The MoonSeeker napsal(a): > Where can I find this patch? I'd like to test it.. > Patches are in development quilt queue http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/ related *testing* patches dm-io-*.patch dm-kcopyd-newio.patch dm-exception-store-newio.patch but depends probably on some patches in series file. Note: there is no patch for new dm-io change in dm-raid1 & dm-log, do *not* use these patches now if you are using mirror (raid1) target ! (Remaining patches - including raid1 - are waiting in Alasdair's mail...) Milan -- mbroz@xxxxxxxxxx > Le 27 sept. 06 à 12:36, Milan Broz a écrit : > >> The problem with limited number of snapshots is caused by the using >> big common mempool in dm-io module. >> (This can happen even you have a lot of free memory...) >> >> There are new dm-io patches which introduce new dm-io interface >> (using private mempools) and solving this type of snapshot limitation. >> >> Patches are currently in review and will probably change a bit, >> but I hope it will in 2.6.19 kernel. >> >> Milan >> >> -- >> mbroz@xxxxxxxxxx >> >> The MoonSeeker napsal(a): >>> Yes I really need it. I have to create a virtual network editor for my >>> diploma project. So I have found many virtual solutions but the bestest >>> for our project is OpenVZ. Unfortunatly, OpenVZ don't offer the copy on >>> write with his solution, after many tests, I have found a solution based >>> on LVM. >>> >>> The main idea is to have a Virtual Private Server Core and lot of >>> Virtual Private Server who are a snapshot of the Virtual Server Core. >>> Now the problem is the limitation of VLM, I need more than 32 servers >>> (32 snapshots). Will this limitation incresed in futur futur released of >>> LVM? Or can we broke this limitation? >>> >>> Have you a solution, it's relly urgent for me... >>> >>> Thanks you >>> >>> >>> Le 26 sept. 06 à 23:14, Jan Blunck a écrit : >>> >>>> On Tue, Sep 26, The MoonSeeker wrote: >>>> >>>>> I'd like to create many snaphot of an image but I've got when I >>>>> attemp to create the 32th snapshot : >>>>> >>>>> root@B03:/diplome# lvcreate -s -L150M -n 232 /dev/openvz/vps-core >>>>> Rounding up size to full physical extent 152.00 MB >>>>> device-mapper: reload ioctl failed: Ne peut allouer de la mémoire >>>>> Failed to suspend origin vps-core >>>>> >>>>> I don't understand the error.. >>>> >>>> I'm not a native french speaker (hint!) but I assume you run out of >>>> memory. >>>> >>>> Yes there are limitations to the number of snapshots. For every single >>>> snapshot we have to allocate memory for copying the chunks to the >>>> exception >>>> store. >>>> >>>> Do you really need that many snapshots at the same time? -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
