Re: [Engine-devel] [Users] [Feedback required][host-deploy] Fedora-19 misses tar at minimal setup

From: "Alon Bar-Lev" <alonbl(a)redhat.com&gt; To: "Juan Hernandez" <jhernand(a)redhat.com&gt; Cc: "engine-devel" <engine-devel(a)ovirt.org&gt;, "arch" <arch(a)ovirt.org&gt;, "users" <users(a)ovirt.org&gt; Sent: Sunday, July 28, 2013 1:42:58 PM Subject: Re: [Users] [Feedback required][host-deploy] Fedora-19 misses tar at minimal setup ----- Original Message ----- > From: "Juan Hernandez" <jhernand(a)redhat.com&gt; > To: "Alon Bar-Lev" <alonbl(a)redhat.com&gt; > Cc: "engine-devel" <engine-devel(a)ovirt.org&gt;, "arch" <arch(a)ovirt.org&gt;, > "users" <users(a)ovirt.org&gt; > Sent: Sunday, July 28, 2013 12:26:56 PM > Subject: Re: [Users] [Feedback required][host-deploy] Fedora-19 misses tar > at minimal setup > > On 07/28/2013 09:46 AM, Alon Bar-Lev wrote: > > Hello All, > > > > I would like to receive feedback regarding how we should cope with a > > state > > presented to use by Fedora. > > > > Fedora-19 minimal setup does not install tar utility which is required to > > deploy files during the host-deploy process (Hosts->Add Host). > > > > I guess because of 2.8M in size (including translations) -- a standard > > commonly used utility was removed. > > > > There are two alternatives : > > > > 1. Instruct users who are using minimal installations to manually install > > tar utility just like they configure repository, dns, etc.. > > > > Benefit: simplicity. > > Benefit: use standard tools. > > Benefit: lower payload to transmit. > > Drawback: require tar at destination machine. > > > > 2. Do not use tar but self extracting python script, a patch is ready[1]. > > > > Benefit: ability to deploy environment in which tar is missing. > > Drawback: non standard tool at destination machine. > > Drawback: complexity within our code. > > > > [[[ > > There was 3rd alternative, using python tar module to deploy tar. > > However, there is a bug in that module when processing last block if > > empty. > > This is edge condition but happened to at least one of the users and I > > could > > reproduce it. > > ]]] > > > > Regards, > > Alon Bar-Lev > > Consider using cpio instead of tar. It is required to build initrd, so > available in any installation. It is also supported by the library > currently used in the engine to build the tar archive. Thanks Juan, it is good idea. I did not thought of using cpio, as I remembered that cpio has no embedded eof (a.cpio+b.cpio=cpio), but now I experiments and see that I was mistaken. Will try to establish a working solution.