[Lxc-users] Regarding creating a LXC container in fedora 17

Michael H. Warfield mhw at WittsEnd.com
Sat May 18 12:25:31 UTC 2013 

Hello,

On Sat, 2013-05-18 at 12:35 +0530, Ajith Adapa wrote:
> Hi,

> I have installed all the rpms created by @thomas and followed @michael
> steps to start a lxc container.

> I have a doubt.

> 1. When I give lxc-create command I came across huge download of various
> files.
> As per my understanding rootfs is created for new container (where can i
> get the steps for it ? ).

Steps for what?  It's in /var/lib/lxc/{Container}/rootfs/

> But I see below log. Is there any issue ?

> Copy /var/cache/lxc/fedora/i686/17/rootfs to /var/lib/lxc/TEST/TEST/rootfs
> ...
> Copying rootfs to /var/lib/lxc/TEST/TEST/rootfs ...setting root passwd to
> root
> installing fedora-release package
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?
> warning: Failed to read auxiliary vector, /proc not mounted?

The warnings are perfectly normal and harmless.  I ran into this with
recent versions of yum and researched it.  It's because /proc is not
mounted in the container itself when the container is being created.
You can ignore them.

> Package fedora-release-17-2.noarch already installed and latest version
> Nothing to do

Again, normal.

> container rootfs and config created
> 'fedora' template installed
> 'TEST' created

Looks like your container was created.  I don't see a problem.

> 2.I see a SOFT LOCK issue with latest version kernel shown below.

> # uname -a
> Linux blr 3.8.8-100.fc17.i686 #1 SMP Wed Apr 17 17:26:59 UTC 2013 i686 i686
> i386 GNU/Linux
> 
> 
> [1098069.351017] SELinux: initialized (dev binfmt_misc, type binfmt_misc),
> uses genfs_contexts
> [1281973.370052] BUG: soft lockup - CPU#0 stuck for 23s! [kworker/0:1:2201]

I've seen that on my Dell 610's but they haven't caused any real
failures.  Not quite sure what that is.

> [1281973.370052] Modules linked in: binfmt_misc lockd sunrpc snd_intel8x0
> snd_ac97_codec ac97_bus snd_seq snd_seq_device snd_pcm i2c_piix4 i2c_core
> microcode virtio_balloon snd_page_alloc snd_timer snd soundcore virtio_net
> uinput virtio_blk
> [1281973.370052] Pid: 2201, comm: kworker/0:1 Not tainted
> 3.8.8-100.fc17.i686 #1 Bochs Bochs
> [1281973.370052] EIP: 0060:[<c068b17a>] EFLAGS: 00000206 CPU: 0
> [1281973.370052] EIP is at iowrite16+0x1a/0x40
> [1281973.370052] EAX: 00000001 EBX: f69b3000 ECX: 0001c050 EDX: 0000c050
> [1281973.370052] ESI: e9d9b600 EDI: 00000000 EBP: f5009b90 ESP: f5009b8c
> [1281973.370052]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> [1281973.370052] CR0: 8005003b CR2: 09cae530 CR3: 345e0000 CR4: 000006d0
> [1281973.370052] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> [1281973.370052] DR6: ffff0ff0 DR7: 00000400
> [1281973.370052] Process kworker/0:1 (pid: 2201, ti=f5008000 task=f6830cb0
> task.ti=f4bb2000)
> [1281973.370052] Stack:
> [1281973.370052]  c07107cd f5009b9c c070ffb9 f4a17a00 f5009bcc f7c36f2b
> 00000000 e9d9b600
> [1281973.370052]  00000020 00000000 e9d9b600 00000000 f69b2000 00000000
> f4b5a740 00000036
> [1281973.370052]  f5009c00 c088ea5e e9d9b600 00000000 f7c384c0 f6822600
> f69b2000 00000000
> [1281973.370052] Call Trace:
> [1281973.370052]  [<c07107cd>] ? vp_notify+0x1d/0x20
> [1281973.370052]  [<c070ffb9>] virtqueue_kick+0x19/0x20
> [1281973.370052]  [<f7c36f2b>] start_xmit+0x14b/0x370 [virtio_net]
> [1281973.370052]  [<c088ea5e>] dev_hard_start_xmit+0x24e/0x4c0
> [1281973.370052]  [<c08a793f>] sch_direct_xmit+0xaf/0x180
> [1281973.370052]  [<c088f01e>] dev_queue_xmit+0x12e/0x370
> [1281973.370052]  [<c08bf670>] ? ip_fragment+0x870/0x870
> [1281973.370052]  [<c08bf88e>] ip_finish_output+0x21e/0x3b0
> [1281973.370052]  [<c08bf670>] ? ip_fragment+0x870/0x870
> [1281973.370052]  [<c08c0354>] ip_output+0x84/0xd0
> [1281973.370052]  [<c08bf670>] ? ip_fragment+0x870/0x870
> [1281973.370052]  [<c08bfb00>] ip_local_out+0x20/0x30
> [1281973.370052]  [<c08bfc3f>] ip_queue_xmit+0x12f/0x3b0
> [1281973.370052]  [<c08d62fb>] tcp_transmit_skb+0x3cb/0x850
> [1281973.370052]  [<c097a440>] ? apic_timer_interrupt+0x34/0x3c
> [1281973.370052]  [<c08d8b50>] tcp_send_ack+0xd0/0x120
> [1281973.370052]  [<c08cc096>] __tcp_ack_snd_check+0x56/0x90
> [1281973.370052]  [<c08d3038>] tcp_rcv_established+0x1c8/0x890
> [1281973.370052]  [<c08dc8f3>] tcp_v4_do_rcv+0x223/0x3e0
> [1281973.370052]  [<c06233f4>] ? security_sock_rcv_skb+0x14/0x20
> [1281973.370052]  [<c08de39c>] tcp_v4_rcv+0x53c/0x770
> [1281973.370052]  [<c08bb110>] ? ip_rcv_finish+0x320/0x320
> [1281973.370052]  [<c08bb1c2>] ip_local_deliver_finish+0xb2/0x260
> [1281973.370052]  [<c08bb4ac>] ip_local_deliver+0x3c/0x80
> [1281973.370052]  [<c08bb110>] ? ip_rcv_finish+0x320/0x320
> [1281973.370052]  [<c08bae50>] ip_rcv_finish+0x60/0x320
> [1281973.370052]  [<c043009c>] ? pvclock_clocksource_read+0x9c/0x130
> [1281973.370052]  [<c08bb73c>] ip_rcv+0x24c/0x370
> [1281973.370052]  [<c088d5db>] __netif_receive_skb+0x5bb/0x740
> [1281973.370052]  [<c088d8ce>] netif_receive_skb+0x2e/0x90
> [1281973.370052]  [<f7c36a49>] virtnet_poll+0x449/0x6a0 [virtio_net]
> [1281973.370052]  [<c044d6aa>] ? run_timer_softirq+0x1a/0x210
> [1281973.370052]  [<c088decd>] net_rx_action+0x11d/0x1f0
> [1281973.370052]  [<c044695b>] __do_softirq+0xab/0x1c0
> [1281973.370052]  [<c04468b0>] ? local_bh_enable_ip+0x90/0x90
> [1281973.370052]  <IRQ>
> [1281973.370052]  [<c0446bdd>] ? irq_exit+0x9d/0xb0
> [1281973.370052]  [<c04258ee>] ? smp_apic_timer_interrupt+0x5e/0x90
> [1281973.370052]  [<c097a440>] ? apic_timer_interrupt+0x34/0x3c
> [1281973.370052]  [<c044007b>] ? console_start+0xb/0x20
> [1281973.370052]  [<c0979bbf>] ? _raw_spin_unlock_irqrestore+0xf/0x20
> [1281973.370052]  [<c07918d6>] ? ata_scsi_queuecmd+0x96/0x250
> [1281973.370052]  [<c076ad18>] ? scsi_dispatch_cmd+0xb8/0x260
> [1281973.370052]  [<c066007b>] ? queue_store_random+0x4b/0x70
> [1281973.370052]  [<c07711b3>] ? scsi_request_fn+0x2c3/0x4b0
> [1281973.370052]  [<c042f2b7>] ? kvm_clock_read+0x17/0x20
> [1281973.370052]  [<c0409448>] ? sched_clock+0x8/0x10
> [1281973.370052]  [<c065cace>] ? __blk_run_queue+0x2e/0x40
> [1281973.370052]  [<c066214a>] ? blk_execute_rq_nowait+0x6a/0xd0
> [1281973.370052]  [<c066221d>] ? blk_execute_rq+0x6d/0xe0
> [1281973.370052]  [<c06620b0>] ? __raw_spin_unlock_irq+0x10/0x10
> [1281973.370052]  [<c0446ba7>] ? irq_exit+0x67/0xb0
> [1281973.370052]  [<c04258ee>] ? smp_apic_timer_interrupt+0x5e/0x90
> [1281973.370052]  [<c097a440>] ? apic_timer_interrupt+0x34/0x3c
> [1281973.370052]  [<c076ffa0>] ? scsi_execute+0xb0/0x140
> [1281973.370052]  [<c0771429>] ? scsi_execute_req+0x89/0x100
> [1281973.370052]  [<c077f3d5>] ? sr_check_events+0xb5/0x2e0
> [1281973.370052]  [<c07a64cd>] ? cdrom_check_events+0x1d/0x40
> [1281973.370052]  [<c077f856>] ? sr_block_check_events+0x16/0x20
> [1281973.370052]  [<c06663c5>] ? disk_check_events+0x45/0xf0
> [1281973.370052]  [<c0666485>] ? disk_events_workfn+0x15/0x20
> [1281973.370052]  [<c045788e>] ? process_one_work+0x12e/0x3d0
> [1281973.370052]  [<c097a440>] ? apic_timer_interrupt+0x34/0x3c
> [1281973.370052]  [<c0459939>] ? worker_thread+0x119/0x3b0
> [1281973.370052]  [<c0459820>] ? flush_delayed_work+0x50/0x50
> [1281973.370052]  [<c045e2a4>] ? kthread+0x94/0xa0
> [1281973.370052]  [<c0980ef7>] ? ret_from_kernel_thread+0x1b/0x28
> [1281973.370052]  [<c045e210>] ? kthread_create_on_node+0xc0/0xc0
> [1281973.370052] Code: 5d c3 8d b4 26 00 00 00 00 89 02 c3 90 8d 74 26 00
> 81 fa ff ff 03 00 89 d1 77 2e 81 fa 00 00 01 00 76 0e 81 e2 ff ff 00 00 66
> ef <c3> 90 8d 74 26 00 55 ba 2c 5a b2 c0 89 e5 89 c8 e8 01 ff ff ff
> [1281991.139165] ata2: lost interrupt (Status 0x58)
> [1281991.148055] ata2: drained 12 bytes to clear DRQ
> [1281991.165039] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
> frozen
> [1281991.172924] sr 1:0:0:0: CDB:
> [1281991.172932] Get event status notification: 4a 01 00 00 10 00 00 00 08
> 00
> [1281991.497342] ata2.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0 pio
> 16392 in
> [1281991.497342]          res 40/00:02:00:04:00/00:00:00:00:00/a0 Emask 0x4
> (timeout)
> [1281991.523767] ata2.00: status: { DRDY }
> [1281991.616161] ata2: soft resetting link
> [1281998.232648] ata2.01: qc timeout (cmd 0xec)
> [1281998.238559] ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4)
> [1281998.247432] ata2: soft resetting link
> [1281998.575468] ata2.01: NODEV after polling detection
> [1281998.698009] ata2.00: configured for MWDMA2
> [1281998.714460] ata2: EH complete

Not sure what the deal is with that ATA error.  That's a hard drive lost
interrupt problem.  Looks to be on your CD Rom drive?  Looks like it
recovered.

> 3. Last but not least after sometime my host kernel crashed as a result
> need to restart the VPC.

I don't understand what you are saying here.  You're saying your kernel
crashed but I don't understand the "as a result of..."  What did you do,
why did you do it, and what happened?

> Regards,
> Ajith

Regards,
Mike

> On Thu, May 16, 2013 at 8:09 PM, Ajith Adapa <ajith.adapa at gmail.com> wrote:
> 
> > Thanks @thomas and @michael.
> >
> > I will try the RPMs and steps provided to start a container.
> >
> > Regards,
> > Ajith
> >
> >
> > On Wed, May 15, 2013 at 2:01 PM, Thomas Moschny <thomas.moschny at gmail.com>wrote:
> >
> >> 2013/5/14 Michael H. Warfield <mhw at wittsend.com>:
> >> > What I would recommend as steps on Fedora 17...
> >> >
> >> > Download lxc-0.9.0 here:
> >> >
> >> > http://lxc.sourceforge.net/download/lxc/lxc-0.9.0.tar.gz
> >> >
> >> > You should have rpm-build and friends installed via yum on your system.
> >> > Build the lxc rpms by running rpmbuild (as any user) as follows:
> >>
> >> You could also try using the pre-built packages I put here:
> >> http://thm.fedorapeople.org/lxc/ .
> >>
> >> Regards,
> >> Thomas
> >>
> >>
> >> ------------------------------------------------------------------------------
> >> AlienVault Unified Security Management (USM) platform delivers complete
> >> security visibility with the essential security capabilities. Easily and
> >> efficiently configure, manage, and operate all of your security controls
> >> from a single console and one unified framework. Download a free trial.
> >> http://p.sf.net/sfu/alienvault_d2d
> >> _______________________________________________
> >> Lxc-users mailing list
> >> Lxc-users at lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/lxc-users
> >>
> >
> >
> 
> ------------------------------------------------------------------------------
> AlienVault Unified Security Management (USM) platform delivers complete
> security visibility with the essential security capabilities. Easily and
> efficiently configure, manage, and operate all of your security controls
> from a single console and one unified framework. Download a free trial.
> http://p.sf.net/sfu/alienvault_d2d
> _______________________________________________ Lxc-users mailing list Lxc-users at lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users

-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 482 bytes
Desc: This is a digitally signed message part
URL: <http://lists.linuxcontainers.org/pipermail/lxc-users/attachments/20130518/6821650c/attachment.pgp>

More information about the lxc-users mailing list