Re: qemu-img create with preallocation=full and cluster-size=2M produces a bad file
On 14.09.20 10:22, Max Reitz wrote: > On 11.09.20 17:39, Alberto Garcia wrote: >> On Fri 11 Sep 2020 04:55:08 PM CEST, Alberto Garcia wrote: $ qemu-img check prealloc_4G_2M.qcow2 ERROR: coffset=0x180a0: copied flag must never be set for compressed clusters >> >> I see, this was fixed recently (QEMU 5.0.0 is still affected), here is >> the patch: >> >> https://git.qemu.org/?p=qemu.git;a=commitdiff;h=348fcc4f7ace1718006e646078d88c8cd8c1d97e >> >> I think this should also be set to qemu-stable, Kevin, Max? > > Well, how do you set things to stable after the commit has been merged? > > Judging from stable-process.rst, we’ll have to reply to the patch in > question and CC qemu-stable. So let’s do that. On second thought, I see that the 5.0.1 stable freeze was last Thursday, so it’s not going into 5.0.1 anyway. Max signature.asc Description: OpenPGP digital signature
Re: qemu-img create with preallocation=full and cluster-size=2M produces a bad file
On 11.09.20 17:39, Alberto Garcia wrote: > On Fri 11 Sep 2020 04:55:08 PM CEST, Alberto Garcia wrote: >>> $ qemu-img check prealloc_4G_2M.qcow2 >>> ERROR: coffset=0x180a0: copied flag must never be set for >>> compressed clusters > > I see, this was fixed recently (QEMU 5.0.0 is still affected), here is > the patch: > > https://git.qemu.org/?p=qemu.git;a=commitdiff;h=348fcc4f7ace1718006e646078d88c8cd8c1d97e > > I think this should also be set to qemu-stable, Kevin, Max? Well, how do you set things to stable after the commit has been merged? Judging from stable-process.rst, we’ll have to reply to the patch in question and CC qemu-stable. So let’s do that. Max signature.asc Description: OpenPGP digital signature
Re: qemu-img create with preallocation=full and cluster-size=2M produces a bad file
On Fri 11 Sep 2020 04:55:08 PM CEST, Alberto Garcia wrote: >> $ qemu-img check prealloc_4G_2M.qcow2 >> ERROR: coffset=0x180a0: copied flag must never be set for >> compressed clusters I see, this was fixed recently (QEMU 5.0.0 is still affected), here is the patch: https://git.qemu.org/?p=qemu.git;a=commitdiff;h=348fcc4f7ace1718006e646078d88c8cd8c1d97e I think this should also be set to qemu-stable, Kevin, Max? Berto
Re: qemu-img create with preallocation=full and cluster-size=2M produces a bad file
On Fri 11 Sep 2020 04:30:45 PM CEST, Bryan S Rosenburg wrote: > $ qemu-img --version > qemu-img version 4.2.0 (Debian 1:4.2-3ubuntu6.4) > Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers > > $ qemu-img create -f qcow2 prealloc_4G_2M.qcow2 4G -o > preallocation=full,cluster_size=2M > Formatting 'prealloc_4G_2M.qcow2', fmt=qcow2 size=4294967296 > cluster_size=2097152 preallocation=full lazy_refcounts=off > refcount_bits=16 > > $ qemu-img check prealloc_4G_2M.qcow2 > ERROR: coffset=0x180a0: copied flag must never be set for > compressed clusters I can reproduce that problem with 4.2.0 from Ubuntu but not with QEMU 3.1.0 nor with the latest master (post-5.1.0). I will investigate, it looks like it would need a fix for Ubuntu LTS. Berto
