-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 23.03.2011 11:07, Andreas Philipp wrote: > > On 23.03.2011 10:25, Li Zefan wrote: >>> Hi all, >>> >>> When I am creating subvolumes I get this strange behavior. If I >>> create a subvolume with a name longer than 4 characters it is >>> read-only, if the name is shorter than 5 characters the >>> subvolume is writeable as expected. I think it is since I >>> upgraded to kernel version 2.6.38 (I do not create subvolumes >>> on a regular basis.). I will compile one of the latest 2.6.37 >>> kernels to see whether there the problem exists, too. Another >>> interesting point is that previously created subvolumes are >>> not affected. >>> >>> Thanks, Andreas Philipp >>> >>> thor btrfs # btrfs subvolume create 123456789 Create subvolume >>> './123456789' thor btrfs # touch 123456789/lsdkfj touch: >>> cannot touch `123456789/lsdkfj': Read-only file system > >> This is really odd, but I can't reproduce it. > >> I created a btrfs filesystem on 2.6.37 kernel, and rebooted to >> latest 2.6.38+, and tried the procedures as you did, but nothing >> bad happend. > While playing around I found the following three new points: - Now > the length of the subvolume name does not matter. So even the ones > with short names are read-only. - It also happens to a fresh newly > created btrfs filesystem. - If I take a snapshot of an "old" (= > writeable) subvolume this is writeable. > > I will now reboot into 2.6.37.4, check there, and then report > back.
Well, this was fast. Everything works as expected on 2.6.37.4. See the output of uname -a for the exact kernel version below. I will now reboot into a differently configured kernel version 2.6.38 and look whether the problem is gone there. Thanks, Andreas Philipp thor ~ # uname -a Linux thor 2.6.37.4 #2 SMP Wed Mar 23 10:25:54 CET 2011 x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz GenuineIntel GNU/Linux -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJNicgcAAoJEJIcBJ3+XkgiDRwP/jVRcrc+Qwq8D3rE50MjBox0 vy8ZKna2MXO4dl6Et8td1ikL0T91eueIjvOeaU5cS8vxknG7xqGh9k89Nd74j98a 2paWOiR49vYYhcKF1EZm6oKgHri/N/1RfLWvhXJef3POprwz3/n3YZcSDsiXcAnJ M8RnGgYFoXNGamPorp32rR5XMln9A6Uma+cUZuaL4eitvsZ+YDsYk4XKZ/8O+cql u5xKihRNDRqQL7LCfqfL0iJxDl3AReOdXUo8sBmo2ioLNv+syJJhhJ2XRbx7r8rM LDWOnsBE1oCq2QuM49MDxuD4JFhCmTJ6oJotaBShcU0J0S8Dlu1URucDO7P33BOK qBFnavR3HaUR+MRor7U+LmeYvasmhj/hUa1nx5jvMEQqeTIioQmYLdllyvHGApfy R4n1+/L91mRr56s96DC31mF7xnSC13LVLJLG+r3ktlj9/u6B+8LAISgo1uDJX681 YQ5KkI8O+5AcAT8Hu1pwdQVC+LXDPp8HIqL59pUWD2v4zyynVqSKgCSKLJ10npLF +NZRhSb6czNSvM0UrUBXPLq1th+ErfMNn4b6RCrAPbA4T5bejvCUUlkx7FiAMmVx rnfiyolblNMfQ+9rY9k8zzZeJfR88wx7yS2VoZlV7n68K01GMy+NDRK203TjcX36 +Y8kUmwptiXc48H6teUN =aSSq -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
