* [linux-lvm] Re: LVM snapshotting broken? [not found] <Pine.LNX.4.21.0010261632440.15696-100000@duckman.distro.conectiva> @ 2000-10-26 23:37 ` Heinz J. Mauelshagen 2000-10-26 23:53 ` Christoph Hellwig 0 siblings, 1 reply; 3+ messages in thread From: Heinz J. Mauelshagen @ 2000-10-26 23:37 UTC (permalink / raw) To: Rik van Riel; +Cc: linux-kernel, linux-lvm, mge Hi Rik, I can't reproduce it on my box. Could you provide a "lvcreate -d" output of what you did to help me to dig into that one. Did somebody else out there face the same 0.8final snapshot weirdness? On Thu, Oct 26, 2000 at 04:36:37PM -0200, Rik van Riel wrote: > Hi Heinz, > > it looks like the LVM snapshotting in 2.4 doesn't allow you > to create snapshots from anything else than the _first_ LV > in the VG... > > I have run both the following command lines (after lvremoving > snap1, of course) and both of them give as a result that the > LV /dev/test_vg/swap ends up being the snapshotted filesystem ;( > > # lvcreate -s -L100 -nsnap1 /dev/test_vg/test > # lvcreate -s -L100 -nsnap1 /dev/test_vg/swap > > # cat /proc/lvm > LVM driver version 0.8final (15/02/2000) > > <snip VG/PV info> > > LVs: [AWDL ] swap 122880 /30 1x open > [AWDL ] test 204800 /50 1x open > [ARDL ] snap1 122880 /30 close > > It looks like somewhere in either the utilities or the > kernel, the argument of which LV to snapshot gets mangled... > Oh, I'm using version 0.8final of the LVM utities. > > regards, > > Rik > -- > "What you're running that piece of shit Gnome?!?!" > -- Miguel de Icaza, UKUUG 2000 > > http://www.conectiva.com/ http://www.surriel.com/ -- Regards, Heinz -- The LVM guy -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Bartningstr. 12 64289 Darmstadt Germany Mauelshagen@Sistina.com +49 6151 7103 86 FAX 7103 96 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] Re: LVM snapshotting broken? 2000-10-26 23:37 ` [linux-lvm] Re: LVM snapshotting broken? Heinz J. Mauelshagen @ 2000-10-26 23:53 ` Christoph Hellwig 2000-10-27 1:28 ` Christoph Hellwig 0 siblings, 1 reply; 3+ messages in thread From: Christoph Hellwig @ 2000-10-26 23:53 UTC (permalink / raw) To: Mauelshagen; +Cc: Rik van Riel, linux-kernel, linux-lvm, mge On Thu, Oct 26, 2000 at 11:37:07PM +0000, Heinz J. Mauelshagen wrote: > > Hi Rik, > > I can't reproduce it on my box. > > Could you provide a "lvcreate -d" output of what you did to help > me to dig into that one. > > Did somebody else out there face the same 0.8final snapshot weirdness? Yes. I have the same problem Rik has. A debug printf just before the ioctl in lv_create_remove gives the right ->lv_snapshot_minor. A debug printk in lvm_do_lv_create just at the beginning has ->lv_snapshot_minor _always_ = 0. This happens with the 0.8final utils, both with and without additional patches. Andrea's lvm-tools-aa-20000119 are ok. Look like a structure mis-match to me, although lv_v2_t is the same for all tools. Christoph -- Always remember that you are unique. Just like everyone else. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] Re: LVM snapshotting broken? 2000-10-26 23:53 ` Christoph Hellwig @ 2000-10-27 1:28 ` Christoph Hellwig 0 siblings, 0 replies; 3+ messages in thread From: Christoph Hellwig @ 2000-10-27 1:28 UTC (permalink / raw) To: Mauelshagen, Rik van Riel, linux-kernel, linux-lvm, mge On Fri, Oct 27, 2000 at 01:53:08AM +0200, Christoph Hellwig wrote: > Look like a structure mis-match to me, although lv_v2_t is the same for > all tools. Sorry I was wrong. The __unused field is missing. Yet another reason for an official 0.8 maintaince release ;) Christoph -- Always remember that you are unique. Just like everyone else. ^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <Pine.LNX.4.21.0010261632440.15696-100000@duckman.distro.conectiva>
2000-10-26 23:37 ` [linux-lvm] Re: LVM snapshotting broken? Heinz J. Mauelshagen
2000-10-26 23:53 ` Christoph Hellwig
2000-10-27 1:28 ` Christoph Hellwig
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