lvremove error on a backup and hight IO Delays/load average

I

informant

Renowned Member
Jan 31, 2012
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10
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Hi all, in version 3 we have the problem, that a backup would create, but lvremove does kill the server.
we use newest version pve-kernel-2.6.32-21-pve. in version 2.* it´s works fine.

backup-job-log:
Code: 
INFO:  starting new backup job: vzdump 5133 --quiet 1 --mailto info@domain.de  --mode snapshot --compress gzip --storage SLS-001 --node pegasus
INFO: Starting Backup of VM 5133 (openvz)
INFO: CTID 5133 exist mounted running
INFO: status = running
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating lvm snapshot of /dev/mapper/pve-data ('/dev/pve/vzsnap-pegasus-0')
INFO: Logical volume "vzsnap-pegasus-0" created
INFO: creating archive '/mnt/pve/SLS-001/dump/vzdump-openvz-5133-2013_06_26-00_30_02.tar.gz'
INFO: Total bytes written: 13505126400 (13GiB, 12MiB/s)
INFO: archive file size: 9.13GB
INFO: delete old backup '/mnt/pve/SLS-001/dump/vzdump-openvz-5133-2013_06_23-01_15_01.tar.gz'

than comes this error message:
Code: 
[B]Jun 26 00:53:30 pegasus kernel: INFO: task lvremove:375696 blocked for more than 120 seconds.
Jun 26 00:53:30 pegasus kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 00:53:30 pegasus kernel: lvremove D ffff880e27201060 0 375696 368693 0 0x00000000[/B]
Jun 26 00:53:30 pegasus kernel: ffff8802f0641a88 0000000000000082 0000000000000000 ffff8801cc5bc580
Jun 26 00:53:30 pegasus kernel: ffff8802f0641a48 ffffffff8140b5ec 0000000000000008 0000000000001000
Jun 26 00:53:30 pegasus kernel: 0000000000000000 0000000102e84e14 ffff8802f0641fd8 ffff8802f0641fd8
Jun 26 00:53:30 pegasus kernel: Call Trace:
Jun 26 00:53:30 pegasus kernel: [<ffffffff8140b5ec>] ? dm_table_unplug_all+0x5c/0x100
Jun 26 00:53:30 pegasus kernel: [<ffffffff8151b563>] io_schedule+0x73/0xc0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811d1bcc>] __blockdev_direct_IO_newtrunc+0xa8c/0xce0
Jun 26 00:53:30 pegasus kernel: [<ffffffff81120346>] ? wait_on_page_writeback_range.part.36+0x96/0x180
Jun 26 00:53:30 pegasus kernel: [<ffffffff811d1e7c>] __blockdev_direct_IO+0x5c/0xd0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811cec90>] ? blkdev_get_blocks+0x0/0xd0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811cef07>] blkdev_direct_IO+0x57/0x60
Jun 26 00:53:30 pegasus kernel: [<ffffffff811cec90>] ? blkdev_get_blocks+0x0/0xd0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811200b8>] mapping_direct_IO.isra.25+0x48/0x70
Jun 26 00:53:30 pegasus kernel: [<ffffffff81123542>] generic_file_read_iter+0x622/0x6a0
Jun 26 00:53:30 pegasus kernel: [<ffffffff8126c817>] ? kobject_put+0x27/0x60
Jun 26 00:53:30 pegasus kernel: [<ffffffff8140a710>] ? dm_blk_open+0x70/0x80
Jun 26 00:53:30 pegasus kernel: [<ffffffff811cfd69>] ? __blkdev_get+0x1b9/0x3e0
Jun 26 00:53:30 pegasus kernel: [<ffffffff8112365f>] generic_file_aio_read+0x9f/0xb0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811cef52>] blkdev_aio_read+0x42/0x90
Jun 26 00:53:30 pegasus kernel: [<ffffffff811917e4>] ? nameidata_to_filp+0x44/0x60
Jun 26 00:53:30 pegasus kernel: [<ffffffff81192b5e>] do_sync_read+0xfe/0x140
Jun 26 00:53:30 pegasus kernel: [<ffffffff81095300>] ? autoremove_wake_function+0x0/0x40
Jun 26 00:53:30 pegasus kernel: [<ffffffff811a6afa>] ? vfs_ioctl+0x2a/0xa0
Jun 26 00:53:30 pegasus kernel: [<ffffffff811a712e>] ? do_vfs_ioctl+0x7e/0x570
Jun 26 00:53:30 pegasus kernel: [<ffffffff8151c56d>] ? mutex_lock+0x1d/0x50
Jun 26 00:53:30 pegasus kernel: [<ffffffff8119333e>] vfs_read+0x9e/0x190
Jun 26 00:53:30 pegasus kernel: [<ffffffff8119347a>] sys_read+0x4a/0x90
Jun 26 00:53:30 pegasus kernel: [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b
Jun 26 00:55:30 pegasus kernel: INFO: task kjournald:1555 blocked for more than 120 seconds.
Jun 26 00:55:30 pegasus kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 26 00:55:30 pegasus kernel: kjournald D ffff880e24a1f3e0 0 1555 2 0 0x00000000
Jun 26 00:55:30 pegasus kernel: ffff880e24b69d70 0000000000000046 0000000000000000 0000000000000007
Jun 26 00:55:30 pegasus kernel: ffff880e24b69da0 ffffffff8160bbc0 0000000000055490 ffff8800282d1070
Jun 26 00:55:30 pegasus kernel: 0000000000000000 0000000102e85db7 ffff880e24b69fd8 ffff880e24b69fd8
Jun 26 00:55:30 pegasus kernel: Call Trace:
Jun 26 00:55:30 pegasus kernel: [<ffffffffa009663c>] journal_commit_transaction+0x13c/0x1200 [jbd]

pveperf said:

Code: 
CPU BOGOMIPS:      48002.04
REGEX/SECOND:      1161058
HD SIZE:           94.49 GB (/dev/mapper/pve-root)
BUFFERED READS:    246.64 MB/sec
AVERAGE SEEK TIME: 6.45 ms
FSYNCS/SECOND:     2776.00
DNS EXT:           67.57 ms
DNS INT:           38.25 ms (domain.de)

on attachment screens about the load:

a normal reboot doesn´t work. we must hard reset or forece reboot the complete server.

nice people, please help us. we do need your help.

thanks and regards

load-1.pngload-2.pngwebinterface-load.png
 
+1

We have the same issue on one of our server since upgrade from 2.3 to 3.0.
The other fresh 3.0 server works fine with the same parameters.
We backup on NFS.
 
please give details about your hardware, especially hardware raid controller (model and firmware version).

and the output of 'pveversion -v'
 
Code: 
pveversion -v


pve-manager: 3.0-23 (pve-manager/3.0/957f0862)
running kernel: 2.6.32-20-pve
proxmox-ve-2.6.32: 3.0-100
pve-kernel-2.6.32-20-pve: 2.6.32-100
lvm2: 2.02.95-pve3
clvm: 2.02.95-pve3
corosync-pve: 1.4.5-1
openais-pve: 1.1.4-3
libqb0: 0.11.1-2
redhat-cluster-pve: 3.2.0-2
resource-agents-pve: 3.9.2-4
fence-agents-pve: 4.0.0-1
pve-cluster: 3.0-4
qemu-server: 3.0-20
pve-firmware: 1.0-22
libpve-common-perl: 3.0-4
libpve-access-control: 3.0-4
libpve-storage-perl: 3.0-8
vncterm: 1.1-4
vzctl: 4.0-1pve3
vzprocps: 2.0.11-2
vzquota: 3.1-2
pve-qemu-kvm: 1.4-13
ksm-control-daemon: 1.1-1

Carte LSI megaraid 9271

We are on ovh.com

Regards,

Aurélien.
 
pls try latest kernel from pvetest, based on RHEL64, using a newer driver.

howto:
Code: 
wget http://download.proxmox.com/debian/dists/wheezy/pvetest/binary-amd64/pve-firmware_1.0-23_all.deb http://download.proxmox.com/debian/dists/wheezy/pvetest/binary-amd64/pve-kernel-2.6.32-22-pve_2.6.32-107_amd64.deb

dpkg -i pve-firmware_1.0-23_all.deb pve-kernel-2.6.32-22-pve_2.6.32-107_amd64.deb

reboot

see also http://forum.proxmox.com/threads/14666-New-kernel-drivers-for-Proxmox-VE-3-0-(pvetest)
 
Hi !

I upgraded to the last kernel this night, and the problem still exist ...
The backup worked good for 2 VM, and then, same problem on the lvremove and load growing high ... And nothing could be done, unless HARD REBOOT ...

He are are the spec of my server : http://www.ovh.com/fr/serveurs_dedies/eg_64g.xml

Thanks for your help, not backuping is really a problem ...

Aurélien.
 
  • why do you use gzip as compression, really slow. use LZO, MUCH faster
  • post the output of cat /etc/pve/storage.cfg, cat /etc/vzdump.conf, cat /proc/mounts
  • we also change the IO scheduler to deadline in 3.0, try switching back to CFQ (see http://pve.proxmox.com/wiki/IO_Scheduler)
 
tom said:
  • why do you use gzip as compression, really slow. use LZO, MUCH faster
  • post the output of cat /etc/pve/storage.cfg, cat /etc/vzdump.conf, cat /proc/mounts
  • we also change the IO scheduler to deadline in 3.0, try switching back to CFQ (see http://pve.proxmox.com/wiki/IO_Scheduler)
Click to expand...

Here is the vzdump command I used :
Code: 
vzdump 207 --mode snapshot --compress lzo --storage nas
So, I think I used LZO ...

Code: 
cat /etc/pve/storage.cfg
nfs: nas
	path /mnt/pve/nas
	server 10.16.101.124
	export /nas-002704/backup/
	options vers=3
	content images,rootdir,backup
	maxfiles 3


dir: local
	path /var/lib/vz
	content images,iso,vztmpl,rootdir
	maxfiles 0


Code: 
cat cat /etc/vzdump.conf
# vzdump default settings


#tmpdir: DIR
#dumpdir: DIR
#storage: STORAGE_ID
#mode: snapshot|suspend|stop
#bwlimit: KBPS
#ionice: PRI
#lockwait: MINUTES
#stopwait: MINUTES
#size: MB
#size 4000
#maxfiles: N
#script: FILENAME
#exclude-path: PATHLIST

Code: 
cat /proc/mounts
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10240k,nr_inodes=8240317,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=6594204k,mode=755 0 0
/dev/sda1 / ext3 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=0,data=ordered 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=13293460k 0 0
/dev/mapper/pve-data /var/lib/vz ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=0,data=ordered 0 0
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
/dev/fuse /etc/pve fuse rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other 0 0
none /sys/kernel/config configfs rw,relatime 0 0
beancounter /proc/vz/beancounter cgroup rw,relatime,blkio,name=beancounter 0 0
container /proc/vz/container cgroup rw,relatime,freezer,devices,name=container 0 0
fairsched /proc/vz/fairsched cgroup rw,relatime,cpuacct,cpu,cpuset,name=fairsched 0 0
/var/lib/vz/private/201 /var/lib/vz/root/201 simfs rw,relatime 0 0
proc /var/lib/vz/root/201/proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /var/lib/vz/root/201/sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /var/lib/vz/root/201/run tmpfs rw,nosuid,noexec,relatime,size=829032k,nr_inodes=1036288,mode=755 0 0
tmpfs /var/lib/vz/root/201/run/shm tmpfs rw,nosuid,nodev,relatime,size=1658064k,nr_inodes=1036288 0 0
devpts /var/lib/vz/root/201/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
10.16.101.124:/nas-002704/backup/ /mnt/pve/nas nfs rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=10.16.101.124,mountvers=3,mountport=32791,mountproto=udp,local_lock=none,addr=10.16.101.124 0 0
/var/lib/vz/private/202 /var/lib/vz/root/202 simfs rw,relatime 0 0
proc /var/lib/vz/root/202/proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /var/lib/vz/root/202/sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /var/lib/vz/root/202/run tmpfs rw,nosuid,noexec,relatime,size=209716k,nr_inodes=262144,mode=755 0 0
tmpfs /var/lib/vz/root/202/run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k,nr_inodes=262144 0 0
tmpfs /var/lib/vz/root/202/run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=524280k,nr_inodes=262144 0 0
devpts /var/lib/vz/root/202/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/203 /var/lib/vz/root/203 simfs rw,relatime 0 0
proc /var/lib/vz/root/203/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/203/sys sysfs rw,relatime 0 0
none /var/lib/vz/root/203/proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0
none /var/lib/vz/root/203/dev devtmpfs rw,relatime,size=1335720k,nr_inodes=333930,mode=755 0 0
none /var/lib/vz/root/203/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
none /var/lib/vz/root/203/dev/shm tmpfs rw,nosuid,nodev,relatime,size=1335720k,nr_inodes=333930 0 0
none /var/lib/vz/root/203/var/run tmpfs rw,nosuid,relatime,size=1335720k,nr_inodes=333930,mode=755 0 0
none /var/lib/vz/root/203/var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=1335720k,nr_inodes=333930 0 0
none /var/lib/vz/root/203/lib/init/rw tmpfs rw,nosuid,relatime,size=1335720k,nr_inodes=333930,mode=755 0 0
/var/lib/vz/private/205 /var/lib/vz/root/205 simfs rw,relatime 0 0
proc /var/lib/vz/root/205/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/205/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/205/lib/init/rw tmpfs rw,nosuid,relatime,size=5193728k,nr_inodes=1298432,mode=755 0 0
tmpfs /var/lib/vz/root/205/dev/shm tmpfs rw,nosuid,nodev,relatime,size=5193728k,nr_inodes=1298432 0 0
devpts /var/lib/vz/root/205/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/207 /var/lib/vz/root/207 simfs rw,relatime 0 0
proc /var/lib/vz/root/207/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/207/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/207/var/run tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536,mode=755 0 0
tmpfs /var/lib/vz/root/207/var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536 0 0
tmpfs /var/lib/vz/root/207/dev/shm tmpfs rw,relatime,size=262144k,nr_inodes=65536 0 0
devpts /var/lib/vz/root/207/dev/pts devpts rw,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /var/lib/vz/root/207/var/run tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536,mode=755 0 0
tmpfs /var/lib/vz/root/207/var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536 0 0
tmpfs /var/lib/vz/root/207/var/run tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536,mode=755 0 0
tmpfs /var/lib/vz/root/207/var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=262144k,nr_inodes=65536 0 0
/var/lib/vz/private/209 /var/lib/vz/root/209 simfs rw,relatime 0 0
proc /var/lib/vz/root/209/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/209/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/209/lib/init/rw tmpfs rw,nosuid,relatime,size=24576000k,nr_inodes=6144000,mode=755 0 0
tmpfs /var/lib/vz/root/209/dev/shm tmpfs rw,nosuid,nodev,relatime,size=24576000k,nr_inodes=6144000 0 0
devpts /var/lib/vz/root/209/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/210 /var/lib/vz/root/210 simfs rw,relatime 0 0
proc /var/lib/vz/root/210/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/210/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/210/lib/init/rw tmpfs rw,nosuid,relatime,size=12288000k,nr_inodes=3072000,mode=755 0 0
tmpfs /var/lib/vz/root/210/dev/shm tmpfs rw,nosuid,nodev,relatime,size=12288000k,nr_inodes=3072000 0 0
devpts /var/lib/vz/root/210/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/211 /var/lib/vz/root/211 simfs rw,relatime 0 0
proc /var/lib/vz/root/211/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/211/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/211/lib/init/rw tmpfs rw,nosuid,relatime,size=1597864k,nr_inodes=399466,mode=755 0 0
tmpfs /var/lib/vz/root/211/dev/shm tmpfs rw,nosuid,nodev,relatime,size=1597864k,nr_inodes=399466 0 0
devpts /var/lib/vz/root/211/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/217 /var/lib/vz/root/217 simfs rw,relatime 0 0
proc /var/lib/vz/root/217/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/217/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/217/lib/init/rw tmpfs rw,nosuid,relatime,size=1073576k,nr_inodes=268394,mode=755 0 0
tmpfs /var/lib/vz/root/217/dev/shm tmpfs rw,nosuid,nodev,relatime,size=1073576k,nr_inodes=268394 0 0
devpts /var/lib/vz/root/217/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/218 /var/lib/vz/root/218 simfs rw,relatime 0 0
proc /var/lib/vz/root/218/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/218/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/218/lib/init/rw tmpfs rw,nosuid,relatime,size=2048000k,nr_inodes=512000,mode=755 0 0
tmpfs /var/lib/vz/root/218/dev/shm tmpfs rw,nosuid,nodev,relatime,size=2048000k,nr_inodes=512000 0 0
devpts /var/lib/vz/root/218/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/219 /var/lib/vz/root/219 simfs rw,relatime 0 0
proc /var/lib/vz/root/219/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/219/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/219/lib/init/rw tmpfs rw,nosuid,relatime,size=8388608k,nr_inodes=2097152,mode=755 0 0
tmpfs /var/lib/vz/root/219/dev/shm tmpfs rw,nosuid,nodev,relatime,size=8388608k,nr_inodes=2097152 0 0
devpts /var/lib/vz/root/219/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/220 /var/lib/vz/root/220 simfs rw,relatime 0 0
proc /var/lib/vz/root/220/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/220/sys sysfs rw,relatime 0 0
none /var/lib/vz/root/220/dev/pts devpts rw,nosuid,noexec,relatime,mode=600,ptmxmode=000 0 0
none /var/lib/vz/root/220/proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0
none /var/lib/vz/root/220/run tmpfs rw,nosuid,noexec,relatime,size=209716k,nr_inodes=262144,mode=755 0 0
none /var/lib/vz/root/220/run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k,nr_inodes=262144 0 0
none /var/lib/vz/root/220/run/shm tmpfs rw,relatime,size=1048576k,nr_inodes=262144 0 0
/var/lib/vz/private/221 /var/lib/vz/root/221 simfs rw,relatime 0 0
proc /var/lib/vz/root/221/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/221/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/221/lib/init/rw tmpfs rw,nosuid,relatime,size=2097152k,nr_inodes=524288,mode=755 0 0
tmpfs /var/lib/vz/root/221/dev/shm tmpfs rw,nosuid,nodev,relatime,size=2097152k,nr_inodes=524288 0 0
devpts /var/lib/vz/root/221/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/222 /var/lib/vz/root/222 simfs rw,relatime 0 0
proc /var/lib/vz/root/222/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/222/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/222/lib/init/rw tmpfs rw,nosuid,relatime,size=2097152k,nr_inodes=524288,mode=755 0 0
tmpfs /var/lib/vz/root/222/dev/shm tmpfs rw,nosuid,nodev,relatime,size=2097152k,nr_inodes=524288 0 0
devpts /var/lib/vz/root/222/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
/var/lib/vz/private/223 /var/lib/vz/root/223 simfs rw,relatime 0 0
proc /var/lib/vz/root/223/proc proc rw,relatime 0 0
sysfs /var/lib/vz/root/223/sys sysfs rw,relatime 0 0
tmpfs /var/lib/vz/root/223/lib/init/rw tmpfs rw,nosuid,relatime,size=2097152k,nr_inodes=524288,mode=755 0 0
tmpfs /var/lib/vz/root/223/dev/shm tmpfs rw,nosuid,nodev,relatime,size=2097152k,nr_inodes=524288 0 0
devpts /var/lib/vz/root/223/dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0

I will look into CFQ.

Thanks for your help,

Aurélien.
 
is the 10.16.101.124:/nas-002704/backup/ slow?

limit the backup bandwidth by editing /etc/vzdump.conf
 
tom said:
is the 10.16.101.124:/nas-002704/backup/ slow?

limit the backup bandwidth by editing /etc/vzdump.conf
Click to expand...

It should not be slow, but I can make tests.
For information, I have another proxmox 3 that backup on this NFS server and everything works great ...

What would you recommand as a limitation or test ?
 
If you NAS is a shared resource, the performance will not be always the same. test it.

So depending on the minimum speed, set your bwlimit.
 
I'll try this, but I think it comes from another thing as the other server works fine on the same network, on the same Nas for backup and with the latest proxmox version.
The difference is the other server use SOFT raid.
 
Hi, I switched to CFQ, retry the backup and it's still the same.
When doing a backup in STOP mode, everything is working fine, but in SNAPSHOT MODE, the vzdump process works and hang just before releasing the LVM snapshot.
The is a .tar.lzo file so the backup seems to be ok, but the server go in a huge load and the only way to stop it is to reboot hard ...
Any other idea ? Or any suggestions on doing the backup in other way ?

Thanks,

Aurélien.
 
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