Am 29.05.22 um 19:24 schrieb Nir Soffer:
Hello everybody,
we run a 3 node self hosted cluster with GlusterFS. I had a lot of problem upgrading ovirt from 4.4.10 to 4.5.0.2 and now we have cluster instability.
First I will write down the problems I had with upgrading, so you get a bigger picture:
engine update when fine But nodes I could not update because of wrong version of imgbase, so I did a manual update to 4.5.0.1 and later to 4.5.0.2. First time after updating it was still booting into 4.4.10, so I did a reinstall. Then after second reboot I ended up in the emergency mode. After a long searching I figure out that lvm.conf using use_devicesfile now but there it uses the wrong filters. So I comment out this and add the old filters back. This procedure I have done on all 3 nodes. When use_devicesfile (default in 4.5) is enabled, lvm filter is not used. During installation
On Sun, May 29, 2022 at 7:50 PM Jonathan Baecker<jonbae77@gmail.com> wrote: the old lvm filter is removed.
Can you share more info on why it does not work for you? The problem was, that the node could not mount the gluster volumes anymore and ended up in emergency mode. - output of lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 1.8T 0 disk `-XA1920LE10063_HKS028AV 253:0 0 1.8T 0 mpath |-gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tmeta 253:16 0 9G 0 lvm | `-gluster_vg_sda-gluster_thinpool_gluster_vg_sda-tpool 253:18 0 1.7T 0 lvm | |-gluster_vg_sda-gluster_thinpool_gluster_vg_sda 253:19 0 1.7T 1 lvm | |-gluster_vg_sda-gluster_lv_data 253:20 0 100G 0 lvm /gluster_bricks/data | `-gluster_vg_sda-gluster_lv_vmstore 253:21 0 1.6T 0 lvm /gluster_bricks/vmstore `-gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tdata 253:17 0 1.7T 0 lvm `-gluster_vg_sda-gluster_thinpool_gluster_vg_sda-tpool 253:18 0 1.7T 0 lvm |-gluster_vg_sda-gluster_thinpool_gluster_vg_sda 253:19 0 1.7T 1 lvm |-gluster_vg_sda-gluster_lv_data 253:20 0 100G 0 lvm /gluster_bricks/data `-gluster_vg_sda-gluster_lv_vmstore 253:21 0 1.6T 0 lvm /gluster_bricks/vmstore sr0 11:0 1 1024M 0 rom nvme0n1 259:0 0 238.5G 0 disk |-nvme0n1p1 259:1 0 1G 0 part /boot |-nvme0n1p2 259:2 0 134G 0 part | |-onn-pool00_tmeta 253:1 0 1G 0 lvm | | `-onn-pool00-tpool 253:3 0 87G 0 lvm | | |-onn-ovirt--node--ng--4.5.0.2--0.20220513.0+1 253:4 0 50G 0 lvm / | | |-onn-pool00 253:7 0 87G 1 lvm | | |-onn-home 253:8 0 1G 0 lvm /home | | |-onn-tmp 253:9 0 1G 0 lvm /tmp | | |-onn-var 253:10 0 15G 0 lvm /var | | |-onn-var_crash 253:11 0 10G 0 lvm /var/crash | | |-onn-var_log 253:12 0 8G 0 lvm /var/log | | |-onn-var_log_audit 253:13 0 2G 0 lvm /var/log/audit | | |-onn-ovirt--node--ng--4.5.0.1--0.20220511.0+1 253:14 0 50G 0 lvm | | `-onn-var_tmp 253:15 0 10G 0 lvm /var/tmp | |-onn-pool00_tdata 253:2 0 87G 0 lvm | | `-onn-pool00-tpool 253:3 0 87G 0 lvm | | |-onn-ovirt--node--ng--4.5.0.2--0.20220513.0+1 253:4 0 50G 0 lvm / | | |-onn-pool00 253:7 0 87G 1 lvm | | |-onn-home 253:8 0 1G 0 lvm /home | | |-onn-tmp 253:9 0 1G 0 lvm /tmp | | |-onn-var 253:10 0 15G 0 lvm /var | | |-onn-var_crash 253:11 0 10G 0 lvm /var/crash | | |-onn-var_log 253:12 0 8G 0 lvm /var/log | | |-onn-var_log_audit 253:13 0 2G 0 lvm /var/log/audit | | |-onn-ovirt--node--ng--4.5.0.1--0.20220511.0+1 253:14 0 50G 0 lvm | | `-onn-var_tmp 253:15 0 10G 0 lvm /var/tmp | `-onn-swap 253:5 0 20G 0 lvm [SWAP] `-nvme0n1p3 259:3 0 95G 0 part `-gluster_vg_nvme0n1p3-gluster_lv_engine 253:6 0 94G 0 lvm /gluster_bricks/engine
- The old lvm filter used, and why it was needed
filter = ["a|^/dev/disk/by-id/lvm-pv-uuid-Nn7tZl-TFdY-BujO-VZG5-EaGW-5YFd-Lo5pwa$|", "a|^/dev/disk/by-id/lvm-pv-uuid-Wcbxnx-2RhC-s1Re-s148-nLj9-Tr3f-jj4VvE$|", "a|^/dev/disk/by-id/lvm-pv-uuid-lX51wm-H7V4-3CTn-qYob-Rkpx-Tptd-t94jNL$|", "r|.*|"] I don't remember exactly any more why it was needed, but without the node was not working correctly. I think I even used vdsm-tool config-lvm-filter.
- output of vdsm-tool config-lvm-filter
Analyzing host... Found these mounted logical volumes on this host: logical volume: /dev/mapper/gluster_vg_nvme0n1p3-gluster_lv_engine mountpoint: /gluster_bricks/engine devices: /dev/nvme0n1p3 logical volume: /dev/mapper/gluster_vg_sda-gluster_lv_data mountpoint: /gluster_bricks/data devices: /dev/mapper/XA1920LE10063_HKS028AV logical volume: /dev/mapper/gluster_vg_sda-gluster_lv_vmstore mountpoint: /gluster_bricks/vmstore devices: /dev/mapper/XA1920LE10063_HKS028AV logical volume: /dev/mapper/onn-home mountpoint: /home devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-ovirt--node--ng--4.5.0.2--0.20220513.0+1 mountpoint: / devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-swap mountpoint: [SWAP] devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-tmp mountpoint: /tmp devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-var mountpoint: /var devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-var_crash mountpoint: /var/crash devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-var_log mountpoint: /var/log devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-var_log_audit mountpoint: /var/log/audit devices: /dev/nvme0n1p2 logical volume: /dev/mapper/onn-var_tmp mountpoint: /var/tmp devices: /dev/nvme0n1p2 Configuring LVM system.devices. Devices for following VGs will be imported: gluster_vg_sda, gluster_vg_nvme0n1p3, onn To properly configure the host, we need to add multipath blacklist in /etc/multipath/conf.d/vdsm_blacklist.conf: blacklist { wwid "eui.0025388901b1e26f" } Configure host? [yes,NO]
If using lvm devices does not work for you, you can enable the lvm filter in vdsm configuration by adding a drop-in file:
$ cat /etc/vdsm/vdsm.conf.d/99-local.conf [lvm] config_method = filter
And run:
vdsm-tool config-lvm-filter
to configure the lvm filter in the best way for vdsm. If this does not create the right filter we would like to know why, but in general you should use lvm devices since it avoids the trouble of maintaining the filter and dealing with upgrades and user edited lvm filter.
If you disable use_devicesfile, the next vdsm upgrade will enable it back unless you change the configuration. I would be happy to just use the default, when there is a way to make use_devicesfile to wok. Also even if you disable use_devicesfile in lvm.conf, vdsm still use --devices instead of filter when running lvm commands, and lvm commands run by vdsm ignore your lvm filter since the --devices option overrides the system settings.
...
I notice some unsync volume warning, but because I had this in the past to, after upgrading, I though after some time they will disappear. The next day there still where there, so I decided to put the nodes again in the maintenance mode and restart the glusterd service. After some time the sync warnings where gone. Not clear what these warnings are, I guess Gluster warning? Yes was Gluster warnings under Storage -> Volumes it was saying that some entries are unsync. So now the actual problem:
Since this time the cluster is unstable. I get different errors and warning, like:
VM [name] is not responding out of nothing HA VM gets migrated VM migration can fail VM backup with snapshoting and export take very long How do you backup the vms? do you sue a backup application? how is it configured? I use a self made plython script, which uses the rest api. I create a snapshot from the VM, build a new VM from that snapshot and move the new one to the export domain. VMs are getting very slow some times Storage domain vmstore experienced a high latency of 9.14251 ovs|00001|db_ctl_base|ERR|no key "dpdk-init" in Open_vSwitch record "." column other_config 489279 [1064359]: s8 renewal error -202 delta_length 10 last_success 489249 444853 [2243175]: s27 delta_renew read timeout 10 sec offset 0 /rhev/data-center/mnt/glusterSD/onode1.example.org:_vmstore/3cf83851-1cc8-4f97-8960-08a60b9e25db/dom_md/ids 471099 [2243175]: s27 delta_renew read timeout 10 sec offset 0 /rhev/data-center/mnt/glusterSD/onode1.example.org:_vmstore/3cf83851-1cc8-4f97-8960-08a60b9e25db/dom_md/ids many of: 424035 [2243175]: s27 delta_renew long write time XX sec All these issues tell use that your storage is not working correctly.
sanlock.log is full of renewal errors form May:
$ grep 2022-05- sanlock.log | wc -l 4844
$ grep 2022-05- sanlock.log | grep 'renewal error' | wc -l 631
But there is lot of trouble from earlier months:
$ grep 2022-04- sanlock.log | wc -l 844 $ grep 2022-04- sanlock.log | grep 'renewal error' | wc -l 29
$ grep 2022-03- sanlock.log | wc -l 1609 $ grep 2022-03- sanlock.log | grep 'renewal error' | wc -l 483
$ grep 2022-02- sanlock.log | wc -l 826 $ grep 2022-02- sanlock.log | grep 'renewal error' | wc -l 242
Here sanlock log looks healthy:
$ grep 2022-01- sanlock.log | wc -l 3 $ grep 2022-01- sanlock.log | grep 'renewal error' | wc -l 0
$ grep 2021-12- sanlock.log | wc -l 48 $ grep 2021-12- sanlock.log | grep 'renewal error' | wc -l 0
vdsm log shows that 2 domains are not accessible:
$ grep ERROR vdsm.log 2022-05-29 15:07:19,048+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_data/de5f4123-0fac-4238-abcf-a329c142bd47/dom_md/metadata (monitor:511) 2022-05-29 16:33:59,049+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_data/de5f4123-0fac-4238-abcf-a329c142bd47/dom_md/metadata (monitor:511) 2022-05-29 16:34:39,049+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_data/de5f4123-0fac-4238-abcf-a329c142bd47/dom_md/metadata (monitor:511) 2022-05-29 17:21:39,050+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_data/de5f4123-0fac-4238-abcf-a329c142bd47/dom_md/metadata (monitor:511) 2022-05-29 17:55:59,712+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_vmstore/3cf83851-1cc8-4f97-8960-08a60b9e25db/dom_md/metadata (monitor:511) 2022-05-29 17:56:19,711+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_vmstore/3cf83851-1cc8-4f97-8960-08a60b9e25db/dom_md/metadata (monitor:511) 2022-05-29 17:56:39,050+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_data/de5f4123-0fac-4238-abcf-a329c142bd47/dom_md/metadata (monitor:511) 2022-05-29 17:56:39,711+0200 ERROR (check/loop) [storage.monitor] Error checking path /rhev/data-center/mnt/glusterSD/onode1.example.org:_vmstore/3cf83851-1cc8-4f97-8960-08a60b9e25db/dom_md/metadata (monitor:511)
You need to find what is the issue with your Gluster storage.
I hope that Ritesh can help debug the issue with Gluster.
Nir
I'm worry that I do something, that it makes it even more worst, and I hove not idea what's the problem. To me it looks not exactly like a problem with data inconsistencies. Jonathan