Mount issue for EBS at EC2 instance

Carfield Yim

1/1/23, 7:43 AM

For historical reason we have 2 EBS drive for our application (which is an EC2 instance, using Amazon2 Linux), one needs to mount as

/data

And the other need to mount as

/data/inhouse

However, after we create a new build of the application, we found it is quite often that "/data/inhouse" cannot mount automatically but need to manually mount it. Not sure if there is any solution to that?

BTW below are the error log when start

xfs_growfs: XFS_IOC_FSGROWFSDATA xfsctl failed: Input/output error
meta-data=/dev/nvme1n1           isize=512    agcount=4, agsize=19660800 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1 spinodes=0
data     =                       bsize=4096   blocks=78643200, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=38400, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

2 + 0

amazon-ec2

amazon-ebs

Score:0

Server

MLu

1/1/23, 8:37 AM

Looks like your 2nd drive is not formatted. By default only the first disk has a filesystrm on it, all other disks must be formatted (mkfs.xfs) before use. This can be done automatically in some startup script.

0 + 1

Carfield Yim

1/1/23, 12:52 PM

Thanks a lot, but in fact it is formatted, and it will work if I restart the host a few time. However, not sure how can I prevent the try restart

Score:0

Server

MLu

1/2/23, 9:14 AM

You have to ensure the order in which the disks are mounted. First you must mount /data and only then /data/inhouse

Typically with /etc/fstab it can be quite random but you can enforce the order with requires-mounts-for fstab option.

Check out this article for more details: How to manage order of disk drives mounting

Hope that helps :)

0 + 2

Carfield Yim

1/4/23, 2:07 PM

Thanks a lot for getting back but look like AWS EBS vol use a difference way to mount, it is only "/" at my fstab. And yes, I exactly looking for something like "requires-mounts-for" for EBS config

MLu

1/5/23, 1:55 AM

@CarfieldYim then your system is probably using [`systemd.mount`](https://www.freedesktop.org/software/systemd/man/systemd.mount.html) rather than fstab. The same article linked in my response talks about that too. For more info google something like *mounting disks with systemd* and come back if you have any issues with that.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Mount issue for EBS at EC2 instance

TH: เมานต์ปัญหาสำหรับ EBS ที่อินสแตนซ์ EC2

RO: Problemă de montare pentru EBS la instanța EC2

RU: Проблема с монтированием EBS на экземпляре EC2

VI: Sự cố gắn kết cho EBS ở phiên bản EC2

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