[gpfsug-discuss] How to do multiple mounts via GPFS

[Justin Cantrell]

This is how we're currently solving this problem, with systemd timer and 
mount. None of the requires seem to work with gpfs since it starts so late.
I would like a better solution.

Is it normal for gpfs to start so late?  I think it doesn't mount until 
after the gpfs.service starts, and even then it's 20-30 seconds.


On 2/22/22 14:42, Skylar Thompson wrote:
> Like Tina, we're doing bind mounts in autofs. I forgot that there might be
> a race condition if you're doing it in fstab. If you're on system with systemd,
> another option might be to do this directly with systemd.mount rather than
> let the fstab generator make the systemd.mount units:
>
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.freedesktop.org%2Fsoftware%2Fsystemd%2Fman%2Fsystemd.mount.html&data=04%7C01%7Cjcantrell1%40gsu.edu%7C2a65cd0ddefd48cb81a308d9f63bb840%7C515ad73d8d5e4169895c9789dc742a70%7C0%7C0%7C637811559082622923%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2BWWD7cCNSMeJEYwELldYT3pLdXVX3AxJj7gqZQCqUv4%3D&reserved=0
>
> You could then set RequiresMountFor=gpfs1.mount in the bind mount unit.
>
> On Tue, Feb 22, 2022 at 02:23:53PM -0500, Justin Cantrell wrote:
>> I tried a bind mount, but perhaps I'm doing it wrong. The system fails
>> to boot because gpfs doesn't start until too late in the boot process.
>> In fact, the system boots and the gpfs1 partition isn't available for a
>> good 20-30 seconds.
>>
>> /gfs1/home??? /home??? none???? bind
>> I've tried adding mount options of x-systemd-requires=gpfs1, noauto.
>> The noauto lets it boot, but the mount is never mounted properly. Doing
>> a manual mount -a mounts it.
>>
>> On 2/22/22 12:37, Skylar Thompson wrote:
>>> Assuming this is on Linux, you ought to be able to use bind mounts for
>>> that, something like this in fstab or equivalent:
>>>
>>> /home /gpfs1/home bind defaults 0 0
>>>
>>> On Tue, Feb 22, 2022 at 12:24:09PM -0500, Justin Cantrell wrote:
>>>> We're trying to mount multiple mounts at boot up via gpfs.
>>>> We can mount the main gpfs mount /gpfs1, but would like to mount things
>>>> like:
>>>> /home /gpfs1/home
>>>> /other /gpfs1/other
>>>> /stuff /gpfs1/stuff
>>>>
>>>> But adding that to fstab doesn't work, because from what I understand,
>>>> that's not how gpfs works with mounts.
>>>> What's the standard way to accomplish something like this?
>>>> We've used systemd timers/mounts to accomplish it, but that's not ideal.
>>>> Is there a way to do this natively with gpfs or does this have to be done
>>>> through symlinks or gpfs over nfs?
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