Re: Sharing data between Debian and NetBSD on the same machine

[Ramiro Aceves <ea1abz%gmail.com@localhost>]

El 13 de enero de 2026 23:42:36 CET, RVP <rvp%SDF.ORG@localhost> escribió:
>On Tue, 13 Jan 2026, Ramiro Aceves wrote:
>
>> Many thanks for the detailed information, it is very valuable for me to try
>> ext2 approach.
>> 
>
>I used to do this too--use an ext2 partition for sharing data--until the
>NetBSD kernel panic'd and thrashed the files I was copying.
>
>Nowadays, I only mount filesystems RW on their native OSes (UFS2 on NetBSD;
>ext{24} on Linux). And, since Linux can read UFS2, and NetBSD can read ext2,
>I stick to RO mounts.
>
>> Second, if it matters, should I create ext2 filesystem from NetBSD with
>> /sbin/newfs_ext2fs, with /usr/pkg/sbin/mkfs.ext2, or from Linux?
>> 
>
>/sbin/newfs_ext2fs. mke2fs on Linux can create an ext2 filesystem with features
>the NetBSD kernel can have trouble with. (This, I think, is what was responsible
>for my kernel panic.)
>
>But, if you don't want to lose data, use a NAS with its native FS (backed by
>RAID, etc.).
>
>-RVP

Thanks RVP and Sad for sharing your experience. I never believed that sharing data between different systems was so dangerous. Perhaps I should consider my possibly wrong EXT2 sharing decision.

Regards.