[Gluster-users] [ovirt-users] open error -13 = sanlock
Nir Soffer
nsoffer at redhat.com
Tue Mar 1 22:15:17 UTC 2016
On Tue, Mar 1, 2016 at 10:51 PM, paf1 at email.cz <paf1 at email.cz> wrote:
>
> HI,
> requested output:
>
> # ls -lh /rhev/data-center/mnt/glusterSD/localhost:*/*/dom_md
>
>
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-BCK/0fcad888-d573-47be-bef3-0bc0b7a99fb7/dom_md:
> total 2,1M
> -rw-rw---- 1 vdsm kvm 1,0M 1. bře 21.28 ids <-- good
> -rw-rw---- 1 vdsm kvm 16M 7. lis 22.16 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 7. lis 22.17 leases
> -rw-r--r-- 1 vdsm kvm 335 7. lis 22.17 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 22.16 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P1/553d9b92-e4a0-4042-a579-4cabeb55ded4/dom_md:
> total 1,1M
> -rw-r--r-- 1 vdsm kvm 0 24. úno 07.41 ids <-- bad (sanlock
cannot write, other can read)
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.14 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 7. lis 03.56 leases
> -rw-r--r-- 1 vdsm kvm 333 7. lis 03.56 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.14 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P2/88adbd49-62d6-45b1-9992-b04464a04112/dom_md:
> total 1,1M
> -rw-r--r-- 1 vdsm kvm 0 24. úno 07.43 ids <-- bad (sanlock
cannot write, other can read)
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.15 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 7. lis 22.14 leases
> -rw-r--r-- 1 vdsm kvm 333 7. lis 22.14 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.15 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P3/3c34ad63-6c66-4e23-ab46-084f3d70b147/dom_md:
> total 1,1M
> -rw-r--r-- 1 vdsm kvm 0 24. úno 07.43 ids <-- bad (sanlock
cannot write, other can read)
> -rw-rw---- 1 vdsm kvm 16M 23. úno 22.51 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 23. úno 23.12 leases
> -rw-r--r-- 1 vdsm kvm 998 25. úno 00.35 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.16 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P4/7f52b697-c199-4f58-89aa-102d44327124/dom_md:
> total 1,1M
> -rw-r--r-- 1 vdsm kvm 0 24. úno 07.44 ids <-- bad (sanlock
cannot write, other can read)
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.17 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 7. lis 00.18 leases
> -rw-r--r-- 1 vdsm kvm 333 7. lis 00.18 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 00.17 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_2KVM12-P1/42d710a9-b844-43dc-be41-77002d1cd553/dom_md:
> total 1,1M
> -rw-rw-r-- 1 vdsm kvm 0 24. úno 07.32 ids <-- bad (other can
read)
> -rw-rw---- 1 vdsm kvm 16M 7. lis 22.18 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 7. lis 22.18 leases
> -rw-r--r-- 1 vdsm kvm 333 7. lis 22.18 metadata
> -rw-rw---- 1 vdsm kvm 16M 7. lis 22.18 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_2KVM12-P2/ff71b47b-0f72-4528-9bfe-c3da888e47f0/dom_md:
> total 3,0M
> -rw-rw-r-- 1 vdsm kvm 1,0M 1. bře 21.28 ids <-- bad (other can
read)
> -rw-rw---- 1 vdsm kvm 16M 25. úno 00.42 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 25. úno 00.44 leases
> -rw-r--r-- 1 vdsm kvm 997 24. úno 02.46 metadata
> -rw-rw---- 1 vdsm kvm 16M 25. úno 00.44 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_2KVM12-P3/ef010d08-aed1-41c4-ba9a-e6d9bdecb4b4/dom_md:
> total 2,1M
> -rw-r--r-- 1 vdsm kvm 0 24. úno 07.34 ids <-- bad (sanlock
cannot write, other can read)
> -rw-rw---- 1 vdsm kvm 16M 23. úno 22.35 inbox
> -rw-rw---- 1 vdsm kvm 2,0M 23. úno 22.38 leases
> -rw-r--r-- 1 vdsm kvm 1,1K 24. úno 19.07 metadata
> -rw-rw---- 1 vdsm kvm 16M 23. úno 22.27 outbox
>
>
/rhev/data-center/mnt/glusterSD/localhost:_2KVM12__P4/300e9ac8-3c2f-4703-9bb1-1df2130c7c97/dom_md:
> total 3,0M
> -rw-rw-r-- 1 vdsm kvm 1,0M 1. bře 21.28 ids <-- bad (other can
read)
> -rw-rw-r-- 1 vdsm kvm 16M 6. lis 23.50 inbox <-- bad (other can
read)
> -rw-rw-r-- 1 vdsm kvm 2,0M 6. lis 23.51 leases <-- bad (other can
read)
> -rw-rw-r-- 1 vdsm kvm 734 7. lis 02.13 metadata <-- bad (group
can write, other can read)
> -rw-rw-r-- 1 vdsm kvm 16M 6. lis 16.55 outbox <-- bad (other can
read)
>
>
/rhev/data-center/mnt/glusterSD/localhost:_2KVM12-P5/1ca56b45-701e-4c22-9f59-3aebea4d8477/dom_md:
> total 1,1M
> -rw-rw-r-- 1 vdsm kvm 0 24. úno 07.35 ids <-- bad (other can
read)
> -rw-rw-r-- 1 vdsm kvm 16M 24. úno 01.06 inbox
> -rw-rw-r-- 1 vdsm kvm 2,0M 24. úno 02.44 leases
> -rw-r--r-- 1 vdsm kvm 998 24. úno 19.07 metadata
> -rw-rw-r-- 1 vdsm kvm 16M 7. lis 22.20 outbox
It should look like this:
-rw-rw----. 1 vdsm kvm 1.0M Mar 1 23:36 ids
-rw-rw----. 1 vdsm kvm 2.0M Mar 1 23:35 leases
-rw-r--r--. 1 vdsm kvm 353 Mar 1 23:35 metadata
-rw-rw----. 1 vdsm kvm 16M Mar 1 23:34 outbox
-rw-rw----. 1 vdsm kvm 16M Mar 1 23:34 inbox
This explains the EACCES error.
You can start by fixing the permissions manually, you can do this online.
> The ids files was generated by "touch" command after deleting them due
"sanlock locking hang" gluster crash & reboot
> I expected that they will be filled automaticaly after gluster reboot (
the shadow copy from ".gluster " directory was deleted & created
empty too )
I don't know about gluster shadow copy, I would not play with gluster
internals.
Adding Sahina for advice.
> OK, it looks that sanlock can't work with empty file or rewrite them .
> Am I right ??
Yes, the files must be initialized before sanlock can use them.
You can initialize the file like this:
sanlock direct init -s <sd_uuid>:0:repair/<sd_uuid>/dom_md/ids:0
Taken from http://lists.ovirt.org/pipermail/users/2016-February/038046.html
> The last point - about "ids" workaround - this is offline version = VMs
have to be moved out from for continual running with maintenance volume mode
> But this is not acceptable in current situation, so the question again,
is it safe to do it online ?? ( YES / NO )
The ids file is accessed only by sanlock. I guess that you don't have a
running
SPM on this DC, since sanlock fails to acquire a host id, so you are pretty
safe
to fix the permissions and initialize the ids files.
I would do this:
1. Stop engine, so it will not try to start vdsm
2. Stop vdsm on all hosts, so they do not try to acquire a host id with
sanlock
This does not affect running vms
3. Fix the permissions on the ids file, via glusterfs mount
4. Initialize the ids files from one of the hosts, via the glusterfs mount
This should fix the ids files on all replicas
5. Start vdsm on all hosts
6. Start engine
Engine will connect to all hosts, hosts will connect to storage and try to
acquire a host id.
Then Engine will start the SPM on one of the hosts, and your DC should
become up.
David, Sahina, can you confirm that this procedure is safe?
Nir
>
> regs.
> Pavel
>
>
>
> On 1.3.2016 18:38, Nir Soffer wrote:
>
> On Tue, Mar 1, 2016 at 5:07 PM, paf1 at email.cz <paf1 at email.cz> wrote:
>>
>> Hello, can anybody explain this error no.13 ( open file ) in
sanlock.log .
>
>
> This is EACCES
>
> Can you share the outoput of:
>
> ls -lh /rhev/data-center/mnt/<server>:<_path>/<sd_uuid>/dom_md
>
>>
>>
>> The size of "ids" file is zero (0)
>
>
> This is how we create the ids file when initializing it.
>
> But then we use sanlock to initialize the ids file, and it should be 1MiB
after that.
>
> Is this ids files created by vdsm, or one you created yourself?
>
>>
>> 2016-02-28 03:25:46+0100 269626 [1951]: open error -13
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P4/7f52b697-c199-4f58-89aa-102d44327124/dom_md/ids
>> 2016-02-28 03:25:46+0100 269626 [1951]: s187985 open_disk
/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P4/7f52b697-c199-4f58-89aa-102d44327124/dom_md/ids
error -13
>> 2016-02-28 03:25:56+0100 269636 [11304]: s187992 lockspace
7f52b697-c199-4f58-89aa-102d44327124:1:/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-P4/7f52b697-c199-4f58-89aa-102d44327124/dom_md/ids:0
>>
>> If the main problem is about zero file size, can I regenerate this file
online securely , with no VM dependence ????
>
>
> Yes, I think I already referred to the instructions how to do that in a
previous mail.
>
>>
>>
>> dist = RHEL - 7 - 2.1511
>> kernel = 3.10.0 - 327.10.1.el7.x86_64
>> KVM = 2.3.0 - 29.1.el7
>> libvirt = libvirt-1.2.17-13.el7_2.3
>> vdsm = vdsm-4.16.30-0.el7
>> GlusterFS = glusterfs-3.7.8-1.el7
>>
>>
>> regs.
>> Pavel
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
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