Date: Tue, 20 Oct 2009 11:17:34 +0100 From: krad <kraduk@googlemail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Write attempt to file in ZFS snapshot dir causes panic Message-ID: <d36406630910200317t477c3cceh6cc83ee5c77994ee@mail.gmail.com> In-Reply-To: <eaba3b490910182018g3c7a9ec7nae2aaeac9a7ad5a2@mail.gmail.com> References: <eaba3b490910182018g3c7a9ec7nae2aaeac9a7ad5a2@mail.gmail.com>
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2009/10/19 Carl Chave <online@chave.us> > I'm new to FreeBSD. Been experimenting with 8.0-RC1 and zfs in a VM. > Really haven't even installed it yet, just getting familiar with zfs > usage from the fixit environment. I experienced some strange behavior > and was wondering if this would warrant a bug report: > > 1. load zfs from bootloader prompt and then boot. > 2. enter fixit environment. > 3. import zpool (in this case a 2 disk vmware mirror named sodpool) > 4. cd to previously created snapshot at sodpool/test/myfs/.zfs/snapshot/one > 5. attempting to create a new file here results in: > > Fixit# echo hello > hello.txt > cannot create hello.txt: Read-only file system > > 6. That seems like the desired response. Next, attempt to modify a > file that already exists in the snapshot: > > Fixit# echo hello >> test.txt > panic: dirtying snapshot! > > I know I'm not supposed to be modifying a snapshot file, but a panic > doesn't seem like the best response to this situation. > > I'm using DVD iso named 8.0-RC1-amd64-dvd1.iso > > This bug report has the same panic but the scenario is different: > http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/138764 > > Is there someplace else I should check for existing issues? > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > I dont see these issues $ echo i > o bash: o: Read-only file system $ pwd /usr/local/.zfs/snapshot/20090816 $ echo i >> o bash: o: Read-only file system $ uname -a FreeBSD X 8.0-RC1 FreeBSD 8.0-RC1 #71: Sun Oct 18 07:05:25 BST 2009 root@X:/usr/obj/usr/src/sys/me amd64
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