On 2024/6/21 17:16, Gao Xiang wrote:
On 2024/6/21 14:18, Hongbo Li wrote:
Erofs over fscache depands on the config CONFIG_EROFS_FS_ONDEMAND
in erofs. There is no way to check whether this feature is supported
or not in userspace. We introduce sysfs file `erofs_ondemand` for
user checking current features. Here is the example:
[Before]
$ cat /sys/fs/erofs/features/erofs_ondemand
cat: /sys/fs/erofs/features/erofs_ondemand: No such file or directory
[After]
$ cat /sys/fs/erofs/features/erofs_ondemand
supported
Signed-off-by: Hongbo Li <[email protected]>
Similar here, I guess you could pass in any `fsid` mount
option and check the return value instead.
Add some words, currently I don't tend to add any sysfs for
new feautures since you could always use golden test images
or test programs to test if any on-disk/runtime feature is
really supported.
Maintaining sysfs files for these causes unnecessary burden
(and could cause unexpected inconsistency). Maybe in the
future I will deprecate all these sysfs files.
Thanks,
Gao Xiang
Thanks,
Gao Xiang
