Re: disks, partitions, slices, etc.

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

El 3/10/26 a las 4:42, Jeff escribió:

> Based on advice I got elsewhere, I would like to put an ext2 filesystem on an existing partition that I can share between NetBSD and Gentoo on a dual boot system. The advice was to create the filesystem from in NetBSD.


Well, I did the opposite (probably wrong): I formatted the ext2 filesystem
 under Linux, and I’ve had some trouble with it in NetBSD, as you may have
read here.

Also RVP pointed problems when parallel copying files:

"Well, I conclude that the NetBSD ext2fs implementation is just buggy. As a test,
I created a DYNAMIC_REV FS using newfs_ext2fs(8), then did your parallel copy
test. Seemed to work fine. Unmounted and remounted; removed all the files;
repeated again. This time, the kernel paniced in the mkdir(2) syscall inside
ext2fs.

If you want to keep making backups to ext2fs from NetBSD, I would avoid
any parallel operations."

I honestly don’t know why, and I didn’t take any notes since then, so my memory is a
 bit fuzzy, I was overwhelmed by the complexity of the whole thing, but after
I ran the last looong fsck from NetBSD (using the e2fsprogs fsck, I think),
the problem hasn’t happened again. I’ve done about a dozen rsyncs since
then without any problems. But the question will always remain...I do not
know if fsck fixed the filesystem or the conditions that caused the problem
may simply not have occurred again.

Regards.