From: lokesh jaliminche Subject: Re: ext2/3 using ext4 module mkdir IO error on pmem DAX mount Date: Fri, 4 Mar 2016 23:56:37 +0530 Message-ID: References: <20160302064304.GA15559@dhcp12-144.nay.redhat.com> <20160303002824.GA31238@linux.intel.com> <20160303234904.GF24012@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: "Theodore Ts'o" , lokesh jaliminche , Ross Zwisler , Xiong Zhou , Andreas Dilger , linux-nvdimm@ml01.01.org, linux-ext4 , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: In-Reply-To: <20160303234904.GF24012@thunk.org> Sender: linux-next-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org ok, no issues and thanks for the information above.I will take care of these things while sending corrected version of this patch. Thanks & Regards, Lokesh On Fri, Mar 4, 2016 at 5:19 AM, Theodore Ts'o wrote: > On Thu, Mar 03, 2016 at 10:49:51PM +0530, lokesh jaliminche wrote: >> Hi, >> I have tested it locally I am also getting same error but not >> consistently. I have put some debug logs for debugging, as per the logs >> it seems that block_group is not getting initialized properly. I am >> not sure weather this is because of my patch. Need to debug more. > > I'm quite sure it's your patch, so I'm going to drop it for now. Note > that with ext3, we don't have flex_bg's (the flex_bg size is 1). > > Here's a reliable repro: > > kvm-xfstests --no-log -c ext3 generic/003 > > For more about kvm-xfstests > > https://git.kernel.org/cgit/fs/ext2/xfstests-bld.git/tree/quick-start?h=META > > Output from running this test: > > BEGIN TEST ext3: Ext4 4k block emulating ext3 Thu Mar 3 18:39:33 EST 2016 > DEVICE: /dev/vdd > MK2FS OPTIONS: -q -O ^extents,^flex_bg,^uninit_bg,^64bit,^metadata_csum,^huge_file,^dir_nlink,^extra_isize > MOUNT OPTIONS: -o block_validity,nodelalloc > FSTYP -- ext4 > PLATFORM -- Linux/i686 kvm-xfstests 4.5.0-rc2-00026-g1f2d779 > MKFS_OPTIONS -- -q -O ^extents,^flex_bg,^uninit_bg,^64bit,^metadata_csum,^huge_file,^dir_nlink,^extra_isize /dev/vdc > MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,nodelalloc /dev/vdc /vdc > > generic/003 [18:39:35][ 13.096353] run fstests generic/003 at 2016-03-03 18:39:35 > [ 14.859764] EXT4-fs error (device vdc): ext4_get_group_desc:288: comm mkdir: block_group >= groups_count - block_group = 850480444, groups_count = 40 > [ 16.944808] EXT4-fs (vdc): warning: mounting fs with errors, running e2fsck is recommended > [ 16.956276] EXT4-fs error (device vdc): ext4_get_group_desc:288: comm mkdir: block_group >= groups_count - block_group = 3221700656, groups_count = 40 > [ 19.023011] EXT4-fs (vdc): warning: mounting fs with errors, running e2fsck is recommended > [ 22.104702] EXT4-fs (vdc): warning: mounting fs with errors, running e2fsck is recommended > [18:39:46] - output mismatch (see /results/results-ext3/generic/003.out.bad) > --- tests/generic/003.out 2016-02-29 22:18:21.000000000 -0500 > +++ /results/results-ext3/generic/003.out.bad 2016-03-03 18:39:46.587676694 -0500 > @@ -1,2 +1,46 @@ > QA output created by 003 > +mkdir: cannot create directory '/vdc/dir1': Input/output error > +./tests/generic/003: line 93: /vdc/dir1/file1: No such file or directory > +stat: cannot stat '/vdc/dir1/file1': No such file or directory > +cat: /vdc/dir1/file1: No such file or directory > +stat: cannot stat '/vdc/dir1/file1': No such file or directory > +ERROR: access time has not been updated after accessing file1 first time > ... > (Run 'diff -u tests/generic/003.out /results/results-ext3/generic/003.out.bad' to see the entire diff) > Ran: generic/003 > Failures: generic/003 > Failed 1 of 1 tests > > (In fact a huge number of tests fail using the ext3 configuration, but > generic/003 is a quick fast test. Before submitting patches, please > run at the very least "kvm-xfstests smoke". Admittedly, for this bug > the smoke test wouldn't have been enough. You would have needed > "kvm-xfstests-g quick", or preferably, "kvm-xfstests -g auto". > Alternatively, you can use gce-xfstests, which uses Google Compute > Engine where you can just fire off the tests, and it will send you > e-mail with the test results. See > https://git.kernel.org/cgit/fs/ext2/xfstests-bld.git/tree/kvm-xfstests/README.GCE > for more information.) > > - Ted