[Users] Ploop filesystem provisioned incorrectly (wrong size)

Kevin Holly openvz at lists.dedilink.eu
Tue Jul 22 12:27:20 PDT 2014


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Hi,

I have a customer complaining about his filesystem being too small
(product FS size: 250GB, his FS size: 219GiB / 235GB).

After further debugging this issue I am now here:


Creation of the containers filesystem (I can provide more logs, by
default I have LOG_LEVEL=7 and VERBOSE=1

2014-06-16T19:20:02+0200 vzctl : CT 2671 : Creating image:
/vz/private/2671.tmp/root.hdd/root.hdd size=262144000K
2014-06-16T19:20:02+0200 : Creating delta
/vz/private/2671.tmp/root.hdd/root.hdd bs=2048 size=524288000 sectors v2
2014-06-16T19:20:02+0200 : Adding snapshot
{5fbaabe3-6958-40ff-92a7-860e329aab41}
2014-06-16T19:20:02+0200 : Storing
/vz/private/2671.tmp/root.hdd/DiskDescriptor.xml
2014-06-16T19:20:02+0200 : Opening delta
/vz/private/2671.tmp/root.hdd/root.hdd
2014-06-16T19:20:02+0200 : Adding delta dev=/dev/ploop16059
img=/vz/private/2671.tmp/root.hdd/root.hdd (rw)
2014-06-16T19:20:02+0200 : Running: parted -s /dev/ploop16059 mklabel
gpt mkpart primary 1048576b 268434407423b
2014-06-16T19:20:02+0200 : Running: mkfs -t ext4 -j -b4096
- -Elazy_itable_init,resize=4294967295 -Jsize=128 -i16384 /dev/ploop16059p1
2014-06-16T19:20:03+0200 : Running: /sbin/tune2fs -ouser_xattr,acl -c0
- -i0 /dev/ploop16059p1
2014-06-16T19:20:03+0200 : Creating balloon file
.balloon-c3a5ae3d-ce7f-43c4-a1ea-c61e2b4504e8
2014-06-16T19:20:03+0200 : Mounting /dev/ploop16059p1 at
/vz/private/2671.tmp/root.hdd/root.hdd.mnt fstype=ext4 data=''
2014-06-16T19:20:03+0200 : Unmounting device /dev/ploop16059
2014-06-16T19:20:03+0200 : Opening delta
/vz/private/2671.tmp/root.hdd/root.hdd
2014-06-16T19:20:03+0200 : Adding delta dev=/dev/ploop16059
img=/vz/private/2671.tmp/root.hdd/root.hdd (rw)
2014-06-16T19:20:03+0200 : Mounting /dev/ploop16059p1 at /vz/root/2671
fstype=ext4 data='balloon_ino=12,'


solus-ed-ch01:~# vzctl exec 2671 df -B1 /
Executing command: df -B1 /
Filesystem           1B-blocks        Used    Available Use% Mounted on
/dev/ploop16059p1 234735247360 86872219648 134441467904  40% /
solus-ed-ch01:~# vzctl exec 2671 df -h /
Executing command: df -h /
Filesystem         Size  Used Avail Use% Mounted on
/dev/ploop16059p1  219G   81G  126G  40% /


solus-ed-ch01:~# gdisk -l /dev/ploop16059
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/ploop16059: 4194304000 sectors, 2.0 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): FA4B229E-10F7-4583-8A4F-C7B99A34945D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 4194303966
Partitions will be aligned on 2048-sector boundaries
Total free space is 4029 sectors (2.0 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048      4194301951   2.0 TiB     0700  primary



So here you can see that the ploop device got provisioned with 2TB
ploop filesystem size and the container only sees 234735247360 Byte
(235 GB / 219 GiB).


Can someone help me debugging this issue further?

This host node had no crashes yet, all other containers are working
completely fine. It's running the following (patched) kernel version:

solus-ed-ch01:~# uname -a
Linux solus-ed-ch01 2.6.32-042stab090.2 #1 SMP Wed May 21 19:25:03 MSK
2014 x86_64 x86_64 x86_64 GNU/Linux
solus-ed-ch01:~# kcare-uname -a
Linux solus-ed-ch01 2.6.32-042stab092.2 #1 SMP Wed May 21 19:25:03 MSK
2014 x86_64 x86_64 x86_64 GNU/Linux


Thanks in advance for anyone trying to help!


Best regards

Kevin Holly - root at hallowe.lt - http://hallowe.lt/
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