Hello Brian, Thank you. I took a snapshot and did the upgrades 15.04->15.10->16.04. The first one was rather bumpy as various packages got upset about mmap/setcap/mknod not quite being fully implemented (and dbus got rather sad, but I have seen that on non-smartos boxes so I think that is an old dbus bug). The second one went rather more smoothly. Overall it did appear to work.
Daniel On 18/03/17 00:48, Brian Bennett wrote: > Hi Daniel, > > Yes, it's true that the kernel version reported is a meaningless string > (that's my serverfault answer, btw!). The only meaning is whatever is > inferred by applications inside the zone. The illumos kernel does not > alter behavior in any way based on the kernel version specified in the > zone config. > > That being said, upgrading ubuntu from the inside with apt is entirely > possible, though I've never tried it. It's a good idea to take a > snapshot before attempting it. Even if a kernel does get installed it > won't be used. Only the illumos kernel is used in lx brand zones. > > -- > Brian Bennett > Systems Engineer, Cloud Operations > Joyent, Inc. | www.joyent.com <http://www.joyent.com> > >> On Mar 17, 2017, at 10:59 AM, Daniel Thomas <[email protected] >> <mailto:[email protected]>> wrote: >> >> I have a LX zone running Ubuntu 15.10 which is long out of security >> support and I wish to upgrade it to a supported version of Ubuntu. I am >> unfamiliar with smartos (a colleague set this up and then left). >> The host is running: >> # uname -a >> SunOS REDACTED 5.11 joyent_20160929T025934Z i86pc i386 i86pc >> >> While I could easily perform the upgrade within the domain, I worry that >> this might end rather badly. It seems that the kernel version and OS >> type are baked into the joyent metadata about the VM. I don't want to >> upgrade the userspace only to find that it relies on syscalls that are >> not supported by smartos's syscall table for the linux kernel version it >> is emulating (I currently get daily cron mail as a result of mmap not >> being supported). >> According to this post: >> https://serverfault.com/questions/700370/what-kernel-versions-are-supported-in-smartos-lx-branded-zones/726690#726690 >> the kernel_version is meaningless and just a user facing string (is that >> true?). However, the linux kernel does change and I think that the >> current version of systemd might use syscalls not present in a kernel >> for 15.10 (I have been bitten by this before in an OpenVZ context). >> >> 1) Does smartos support multiple Linux kernel versions? >> 2a) If so which versions does it support and how do I switch a VM >> between them? >> 2b) If not then will upgrading the userspace to Ubuntu 16.04 work or >> will it die horribly. >> >> 3) Can I snapshot such a VM and restore it if things go badly? Reading: >> https://smartos.org/man/1m/vmadm >> "Support for snapshots is currently experimental. It only works for OS >> VMS which also have no additional datasets." >> which does not sound promising. >> >> The json for the zone follows: >> >> # vmadm get f116308f-8892-41ec-b7e2-e057b55562d0 >> { >> "zonename": "f116308f-8892-41ec-b7e2-e057b55562d0", >> "autoboot": true, >> "brand": "lx", >> "limit_priv": "default", >> "v": 1, >> "create_timestamp": "2016-04-05T10:15:53.230Z", >> "image_uuid": "631e52e8-c884-11e5-a72c-ff625ef3bd2a", >> "cpu_shares": 100, >> "max_lwps": 2000, >> "max_msg_ids": 4096, >> "max_sem_ids": 4096, >> "max_shm_ids": 4096, >> "max_shm_memory": 12288, >> "zfs_io_priority": 1000, >> "max_physical_memory": 8192, >> "max_locked_memory": 8192, >> "max_swap": 8192, >> "billing_id": "00000000-0000-0000-0000-000000000000", >> "owner_uuid": "dc2a364c-fb11-11e5-b082-bffdf24c3b85", >> "tmpfs": 8192, >> "hostname": "REDACTED", >> "dns_domain": "local", >> "kernel_version": "3.13.0", >> "resolvers": [ >> "REDACTED" >> ], >> "alias": "REDACTED", >> "nics": [ >> { >> "interface": "eth0", >> "mac": "REDACTED", >> "nic_tag": "external", >> "gateway": "REDACTED", >> "gateways": [ >> "REDACTED" >> ], >> "netmask": "255.255.252.0", >> "ip": "REDACTED", >> "ips": [ >> "REDACTED" >> ], >> "primary": true >> } >> ], >> "filesystems": [ >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs" >> }, >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs", >> "options": [ >> "ro" >> ] >> }, >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs" >> }, >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs", >> "options": [ >> "ro" >> ] >> }, >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs", >> "options": [ >> "ro" >> ] >> }, >> { >> "source": "REDACTED", >> "target": "REDACTED", >> "type": "lofs", >> "options": [ >> "ro" >> ] >> } >> ], >> "uuid": "f116308f-8892-41ec-b7e2-e057b55562d0", >> "zone_state": "running", >> "zonepath": "/zones/f116308f-8892-41ec-b7e2-e057b55562d0", >> "zoneid": 6, >> "last_modified": "2016-12-15T08:44:10.000Z", >> "firewall_enabled": false, >> "server_uuid": "6a028b80-3f36-11e6-906e-001560a04062", >> "platform_buildstamp": "20160929T025934Z", >> "state": "running", >> "boot_timestamp": "2016-12-15T08:44:40.000Z", >> "pid": 53896, >> "customer_metadata": { >> "root_authorized_keys": "REDACTED", >> "user-script": "/usr/sbin/mdata-get root_authorized_keys > >> ~root/.ssh/authorized_keys; chmod 600 ~root/.ssh/authorized_keys" >> }, >> "internal_metadata": {}, >> "routes": {}, >> "tags": {}, >> "quota": 20, >> "zfs_root_recsize": 131072, >> "zfs_filesystem": "zones/f116308f-8892-41ec-b7e2-e057b55562d0", >> "zpool": "zones", >> "snapshots": [] >> } >> >> >> Any help much appreciated. >> >> Thank you, >> >> Daniel >> >> > > ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
