csi-driver
csi-driver copied to clipboard
Support a minimal node kernel version for the XFS options compatibility
TL;DR
Related to https://github.com/hetznercloud/csi-driver/issues/648#issuecomment-2275758882
The node kernel may not support all options set during the mkfs.xfs command (from the csi driver image). This leads to problem when mounting the file system with incompatible features/options.
Expected behavior
To make sure the created XFS file system work on a known set of linux kernels, we might want to configure a set of options compatible with those node kernels.
For example, we want to support linux kernels >= 5.15, we can do the following:
$ cat /usr/share/xfsprogs/mkfs/lts_5.15.conf
# V5 features that were the mkfs defaults when the upstream Linux 5.15 LTS
# kernel was released at the end of 2021.
[metadata]
bigtime=1
crc=1
finobt=1
inobtcount=1
reflink=1
rmapbt=0
[inode]
sparse=1
nrext64=0
$ mkfs.xfs -f -c options=/usr/share/xfsprogs/mkfs/lts_5.15.conf /dev/mapper/scsi-0HC_Volume_101135663