[Users] flashcache

[CoolCold]

Bumping up - anyone still on flashcache & openvz kernels? Tried to
compile flashcache 3.1.3 dkms against 2.6.32-042stab112.15 , getting
errors:

DKMS make.log for flashcache-1.0-227-gc0eeb3d1e539 for kernel
2.6.32-042stab112.15-el6-openvz (x86_64)
Fri Nov 13 13:56:24 MSK 2015
make[1]: Entering directory
'/var/lib/dkms/flashcache/1.0-227-gc0eeb3d1e539/build'
grep: /etc/redhat-release: No such file or directory
make -C /lib/modules/2.6.32-042stab112.15-el6-openvz/build
M=/var/lib/dkms/flashcache/1.0-227-gc0eeb3d1e539/build modules V=0
make[2]: Entering directory
'/usr/src/linux-headers-2.6.32-042stab112.15-el6-openvz'
grep: /etc/redhat-release: No such file or directory
  CC [M]  /var/lib/dkms/flashcache/1.0-227-gc0eeb3d1e539/build/flashcache_conf.o
In file included from
/usr/src/linux-headers-2.6.32-042stab112.15-el6-openvz/arch/x86/include/asm/timex.h:5:0,
                 from include/linux/timex.h:171,
                 from include/linux/jiffies.h:8,
                 from include/linux/ktime.h:25,
                 from include/linux/timer.h:5,
                 from include/linux/workqueue.h:8,
                 from include/linux/mmzone.h:19,
                 from include/linux/gfp.h:4,
                 from include/linux/kmod.h:22,
                 from include/linux/module.h:13,
                 from
/var/lib/dkms/flashcache/1.0-227-gc0eeb3d1e539/build/flashcache_conf.c:26:
/usr/src/linux-headers-2.6.32-042stab112.15-el6-openvz/arch/x86/include/asm/tsc.h:
In function ‘vget_cycles’:
/usr/src/linux-headers-2.6.32-042stab112.15-el6-openvz/arch/x86/include/asm/tsc.h:45:2:
error: implicit declaration of function ‘__native_read_tsc’
[-Werror=implicit-function-declaration]
  return (cycles_t)__native_read_tsc();
  ^
In file included from include/linux/sched.h:72:0,
                 from include/linux/kmod.h:28,
                 from include/linux/module.h:13,
                 from
/var/lib/dkms/flashcache/1.0-227-gc0eeb3d1e539/build/flashcache_conf.c:26:
include/linux/signal.h: In function ‘sigaddset’:
include/linux/signal.h:41:6: error: ‘_NSIG_WORDS’ undeclared (first
use in this function)
  if (_NSIG_WORDS == 1)
...

On Fri, Jul 11, 2014 at 4:34 AM, Nick Knutov <mail at knutov.com> wrote:
> I think you are speaking here about different cases.
>
> One is making HA backup node. When we are backing up full node to
> another node (1:1) - zfs send/receive is much better (and the goal is to
> save data, not running processes). Without zfs - ploop snapshotting and
> vzmigrate is good enough (over SSD), and rsync with ext4 (simfs inside
> CT) is really pain.
>
> The other case is migrating large amount of CTs over large amount of
> nodes for resource usage balancing [with zero downtime]. There is no
> alternatives to vzmigrate here although zfs send/receive with
> per-container ZVOL can speed up this process [if it's important to
> transfer between nodes faster with less network usage]
>
> 10.07.2014 15:35, Pavel Odintsov пишет:
>>> Why? ZFS send/receive is able to do bit-by-bit identical copy of the FS,
>>> >I thought the point of migration is to don't have the CT notice any
>>> >change, I don't see why the inode numbers should change.
>> Do you have really working zero downtime vzmigrate on ZFS?
>>
>
> --
> Best Regards,
> Nick Knutov
> http://knutov.com
> ICQ: 272873706
> Voice: +7-904-84-23-130
> _______________________________________________
> Users mailing list
> Users at openvz.org
> https://lists.openvz.org/mailman/listinfo/users



-- 
Best regards,
[COOLCOLD-RIPN]