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SubjectRe: [PATCH 3/4] Do not allow umounting of frozen filesystems
Eric Sandeen さんは書きました:
> Al Viro wrote:
> ...
>
>
>> IOW, I'd rather add two new ioctls (check if frozen/thaw), both by
>> bdev. On top of the first two patches in this set.
>>
>
>
>> Comments?
>>
>
> The check ioctls would be very very useful, IMHO. Many filesystem tools
> refuse to operate on a mounted filesystem, but in some cases it'd be
> safe to do readonly operations on a frozen, mounted fs.
>

Yep, and HA software would benefit from the check ioctls too.

- Fernando
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