[ovirt-users] thin_check run on VM disk by host on startup ?!
Nir Soffer
nsoffer at redhat.com
Tue Aug 30 14:47:18 UTC 2016
On Tue, Aug 30, 2016 at 3:51 PM, Rik Theys <Rik.Theys at esat.kuleuven.be> wrote:
>
> Hi,
>
> While rebooting one of the hosts in an oVirt cluster, I noticed that
> thin_check is run on the thin pool devices of one of the VM's on which
> the disk is assigned to.
>
> That seems strange to me. I would expect the host to stay clear of any
> VM disks.
We expect the same thing, but unfortunately systemd and lvm try to
auto activate stuff. This may be good idea for desktop system, but
probably bad idea for a server and in particular a hypervisor.
We don't have a solution yet, but you can try these:
1. disable lvmetad service
systemctl stop lvm2-lvmetad.service lvm2-lvmetad.socket
systemctl mask lvm2-lvmetad.service lvm2-lvmetad.socket
Edit /etc/lvm/lvm.conf:
use_lvmetad = 0
2. disable lvm auto activation
Edit /etc/lvm/lvm.conf:
auto_activation_volume_list = []
3. both 1 and 2
Currently we don't touch lvm.conf, and override it using --config option
from the command line when running lvm commands from vdsm. But this
does not help with startup time automatic activation and lvm peeking into
lvs owned by vms. We are probably going to introduce the changes above
in the future.
> When I look at the 'lvs' output on the host, it seems to have activated
> the VM's volume group that has the thin pool in it. It has also
> activated one other volume group (and it's LV's) that is _not_ a thin
> pool. All other VM disks are shown as LV's with their uuid. See output
> below.
>
> Is this expected behaviour? I would hope/expect that the host will never
> touch any VM disks. Am I supposed to configure an LVM filter myself to
> prevent this issue?
>
> We had a thin pool completely break on an VM a while ago and I never
> determined the root cause (was a test VM). If the host changed something
> on the disk while the VM was running on the other host this might have
> been the root cause.
>
> Regards,
>
> Rik
>
>
> LV VG
> Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
> 05a0fc6e-b43a-47b4-8979-92458dc1c76b
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 08d25785-5b52-4795-863c-222b3416ed8d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 3.00g
>
> 0a9d0272-afc5-4d2e-87e4-ce32312352ee
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 40.00g
>
> 0bc1cdc9-edfc-4192-9017-b6d55c01195d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 17.00g
>
> 181e6a61-0d4b-41c9-97a0-ef6b6d2e85e4
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 400.00g
>
> 1913b207-d229-4874-9af0-c7e019aea51d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 128.00m
>
> 1adf2b74-60c2-4c16-8c92-e7da81642bc6
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 5.00g
>
> 1e64f92f-d266-4746-ada6-0f7f20b158a6
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 65.00g
>
> 22a0bc66-7c74-486a-9be3-bb8112c6fc9e
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 9.00g
>
> 2563b835-58be-4a4e-ac02-96556c5e8c1c
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 9.00g
>
> 27edac09-6438-4be4-b930-8834e7eecad5
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 5.00g
>
> 2b57d8e1-d304-47a3-aa2f-7f44804f5c66
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 15.00g
>
> 2f073f9b-4e46-4d7b-9012-05a26fede87d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 36.00g
>
> 310ef6e4-0759-4f1a-916f-6c757e15feb5
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 5.00g
>
> 3125ac02-64cb-433b-a1c1-7105a11a1d1c
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 36.00g
>
> 315e9ad9-7787-40b6-8b43-d766b08708e2
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 64.00g
>
> 32e4e88d-5482-40f6-a906-ad8907d773ce
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 32f0948b-324f-4e73-937a-fef25abd9bdc
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 32.00g
>
> 334e0961-2dad-4d58-86d9-bfec3a4e83e4
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 11.00g
>
> 36c4a274-cbbe-4a03-95e5-8b98ffde0b1b
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 1.17t
>
> 36d95661-308f-42e6-a887-ddd4d4ed04e9
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 250.00g
>
> 39d88a73-4e59-44a7-b773-5bc446817415
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> 3aeb1c19-7113-4a4b-9e27-849af904ed41
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 32.00g
>
> 43ac529e-4295-4e77-ae06-963104950921
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 33.00g
>
> 462f1cc4-e3a7-4fcd-b46c-7f356bfc5589
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 479fc9a4-592c-4287-b8fe-db7600360676
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 1.00t
>
> 4d05ce38-2d33-4f01-ae33-973ff8eeb897
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> 4d307170-7d45-4bb9-9885-68aeacee5f33
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 24.00g
>
> 4dca97ab-25de-4b69-9094-bf02698abf0e
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 8.00g
>
> 54013d0f-fd47-4c91-aa31-f6dd2d4eeaad
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 64.00g
>
> 55a2a2aa-88f2-4aca-bbfd-052f6be3079d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> 57131782-4eda-4fbd-aeaa-af49d12a79e9
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 14.00g
>
> 5884b686-6a2e-4166-9727-303097a349fe
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 32.00g
>
> 6164a2b2-e84b-4bf9-abab-f7bc19e1099d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 62c8a0be-4d7f-4297-af1c-5c9d794f4ba0
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 500.00g
>
> 67499042-4c19-425c-9106-b3c382edbec1
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 1.00t
>
> 6ba95bb2-04ed-4512-95f4-34e38168f9e9
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 22.00g
>
> 6ebf91c2-2051-4e2b-b1c3-57350834f236
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 100.00g
>
> 70c834a0-05f4-469f-877c-24101c7abf25
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 6.00g
>
> 71401df8-19dd-45d0-be33-f07937fe042d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 6.00g
>
> 73d5eb12-88e3-44a2-a791-9b7ad5b77953
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 74e0a4ea-d873-4381-85a8-122cd4d2e961
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 260.00g
>
> 776901e3-bf78-4cab-aac6-b02588a7b1e1
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 48.00g
>
> 86d608ac-1a24-451e-9a29-1b7cbc13c654
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> 88fbb53f-5019-4cc5-aca6-686731c43f67
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 14.00g
>
> 8dc43564-9a9d-4600-a715-0b62c4d0308f
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 5.00g
>
> 90167fb2-0941-4cf3-ae56-7cefca7909dd
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 16.00g
>
> 99a367c1-ce88-45c7-ac21-aa82c7e9b86e
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> 9d0fa9df-4b14-46cc-91a4-e66155230b9e
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> 9d31be10-59c7-4994-9c72-c57608c1b1f0
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 250.00g
>
> 9f6dbd0b-78ef-4b84-8467-04e5bd05abfd
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 7.00g
>
> 9fb1bdee-0e84-46df-89e2-f05afccd3867
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 70.00g
>
> a0db7a2a-4923-4873-81a0-2f6b7037e643
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 31.00g
>
> a270bad3-cabb-4c14-bf71-347ee148e343
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 50.00g
>
> a9bfdea5-ce26-42d2-af9c-2a6f02df0d2d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 16.00g
>
> b5efe389-6535-412a-a4ed-f3f6147a6dae
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 10.00g
>
> b6c6e718-5c16-4918-b47b-a2c936228a08
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 15.00g
>
> baca4655-c58a-413f-a6c7-b39add9eecb8
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 16.00g
>
> bf378ca0-373a-4a9c-85cd-9983a3004ab7
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 100.00g
>
> c360aaaf-68a4-450d-acac-ff474a579f6c
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 100.00g
>
> c77e9e8c-40a2-4db0-822e-7a089cc77b8a
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 128.00m
>
> cb634231-8bb3-4725-89b7-90c33046bc7c
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 35.25g
>
> cfca3f6e-5c46-4e65-96a5-37cede02a3b5
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 256.00g
>
> d22ff40f-4ce2-4f3a-8c35-07ca72ceb91d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 16.00g
>
> d6ed59ff-6f43-4ebf-b83d-683acd9013c9
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 16.00g
>
> d7357da8-1899-462f-b4a9-d7cf9d6f77c2
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 5.00g
>
> d9dbfb34-0889-42d8-9c31-bad4948f9ca5
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 33.00g
>
> dc057b04-446b-48d4-b559-bb85f38139ca
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-ao---- 24.00g
>
> e5d4a078-cd51-4a5d-9f58-29ef253821f9
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 12.00g
>
> eca39fab-60a8-4384-8196-32b55f24107b
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 64.00g
>
> ed23275c-d5e8-4f7c-a795-52bf59c93d4a
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 4.00g
>
> ee5eab01-88cb-4a4b-bcd3-46e26ae47feb
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 64.00g
>
> f0676f9b-c942-4ebc-8614-d79b437d667a
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 18.00g
>
> f778d555-cf2c-4f47-83fe-507ab4b0e96d
> a797e417-adeb-4611-b4cf-10844132eef4 -wi------- 15.00g
>
> ids
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 128.00m
>
> inbox
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 128.00m
>
> leases
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 2.00g
>
> master
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 1.00g
>
> metadata
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 512.00m
>
> outbox
> a797e417-adeb-4611-b4cf-10844132eef4 -wi-a----- 128.00m
>
> 24d78600-22f4-44f7-987b-fbd866736249
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 37.50g
>
> 27c6e31e-dad2-4df1-a76d-ee337f1766b1
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 8.00g
>
> 28506d83-8d12-43ea-aa71-7f4a93486aa9
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 1.17t
>
> 292b02b2-dd4d-43b0-9799-f8f663cff6ef
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 75.00g
>
> 3d39299a-1912-4a91-9c4a-dcaaa056627a
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 32.00g
>
> 64daff8f-e92a-4823-879f-78bc8314d2e6
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 128.00m
>
> 6a3eaf14-21f8-4517-9eef-be274ce07857
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 7.00g
>
> 6c1136cb-4525-4cb5-b705-f81265878355
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 19.00g
>
> ab9dfe0d-72a6-4d94-9206-27198f8dc579
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 128.00m
>
> cb59ea43-4418-4da3-86e1-77feaf2637b1
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 3.00g
>
> cc3dca9d-b1a7-4b05-8f53-7d9da0655be5
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 431.00g
>
> d2274e23-dc3f-49e3-b5f4-2b3eada29937
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 4.00g
>
> d57e7183-0f57-42bb-bb14-dd7bf7e320cb
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 6.00g
>
> f7545aa2-e953-4f6c-bd62-1b1fe33bc66e
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 7.00g
>
> fa1d8c9c-9874-4fad-b059-a0c60053dcfb
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi------- 16.00g
>
> ids
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 128.00m
>
> inbox
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 128.00m
>
> leases
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 2.00g
>
> master
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 1.00g
>
> metadata
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 512.00m
>
> outbox
> a7ba2db3-517c-408a-8b27-ea45989d6416 -wi-a----- 128.00m
>
> imap maildata
> Vwi---tz-- 750.00g pool0
> ldap maildata
> Vwi---tz-- 3.00g pool0
> log maildata
> Vwi---tz-- 10.00g pool0
> mailconfig maildata
> Vwi---tz-- 2.00g pool0
> pool0 maildata
> twi---tz-- 1020.00g
> postfix maildata
> Vwi---tz-- 10.00g pool0
> root vg_amazone
> -wi-ao---- 32.00g
> swap vg_amazone
> -wi-ao---- 64.00g
> phplogs vg_logs
> -wi-a----- 12.00g
> wwwlogs vg_logs
> -wi-a----- 12.00g
>
>
>
> --
> Rik Theys
> System Engineer
> KU Leuven - Dept. Elektrotechniek (ESAT)
> Kasteelpark Arenberg 10 bus 2440 - B-3001 Leuven-Heverlee
> +32(0)16/32.11.07
> ----------------------------------------------------------------
> <<Any errors in spelling, tact or fact are transmission errors>>
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