On 06/17/2016 01:26 AM, Andrew Vagin wrote: > On Thu, Jun 16, 2016 at 03:56:39PM -0600, Tycho Andersen wrote: >> On Thu, Jun 16, 2016 at 02:56:45PM +0200, alex vk wrote: >>> Hi everyone, >>> >>> I'm also trying to use LXD to migrate containers between the two raspberry >>> Pi 2 >>> >>> Interestingly, the snapshot and restore of a container works well on the >>> same Raspberry (contrarily to my previous mail where i'm using >>> lxc-checkpoint which does not work) >>> >>> I'm using those commands : >>> lxc snapshot migratest snap0 --stateful >>> and >>> lxc restore migratest snap0 --stateful >>> >>> >>> In order to migrate a container from one Rpi to another, I've followed the >>> tutorial you made Tycho ( >>> https://insights.ubuntu.com/2015/05/06/live-migration-in-lxd/) and >>> apparently the checkpoint succeeds, but the restore fails with this error : >>> >>> root@pi-desktop:/home/pi# lxc move rpi1:migratest rpi2:migratest >>> error: Error transferring container data: restore failed: >>> pie: 645: Error (pie/restorer.c:1176): Can't restore 0x76f9b000 mappin> >>> pie: 645: Error (pie/restorer.c:1506): Restorer fail 645 >>> pie: 644: Error (pie/restorer.c:1176): Can't restore 0x76f9b000 mappin> >>> pie: 644: Error (pie/restorer.c:1506): Restorer fail 644 >>> (01.345631) Error (cr-restore.c:987): 2089 killed by signal 9: Killed >>> (01.459880) Error (cr-restore.c:1866): Restoring FAILED. >>> >>> Maybe you got an idea about this error ? >> >> What kernel versions are you using? To be honest, I'm not too familiar >> with the VMA code, but I wouldn't be surprised if there was an >> arch-specific bug, as I'm not sure how well used that path is. >> >> Looking at the kernel code for sys_shmat, I don't understand how you'd >> get a zero value return from it, as you do in your log: > > Here is something strange. These two lines contain vma_entry->start, but > in the first line it's equal to 0 and in the second value it's > 0x76f9b000. How is it possible? > >> >>> pie: 644: Attach SYSV shmem 65538 at 0x0 > > pr_info("Attach SYSV shmem %d at %"PRIx64"\n", (int)vma_entry->fd, > vma_entry->start); > >>> pie: 644: Error (pie/restorer.c:1176): Can't restore 0x76f9b000 mappin> >>> pie: 644: g with 0x0 > > pr_err("Can't restore %"PRIx64" mapping with %lx\n", vma_entry->start, va);
It looks like vma->start is 0 here. Alex, can you do 'crit show $images/mm-644.img' and show the results? >>> pie: 644: Error (pie/restorer.c:1506): Restorer fail 644 >> >> Does this happen every time? Or just sometimes? _______________________________________________ lxc-users mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-users
