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Message-ID: <CAGJTRcj_WXfMzLYGRkoSSYgoFQUH-GvaEh7dNLF-J2YZXS1Wsw@mail.gmail.com> Date: Sun, 21 Jul 2013 19:59:27 -0500 From: Michael <mike@...ftx.net> To: Michael <mike@...ftx.net>, "H. Peter Anvin" <hpa@...or.com>, "Theodore Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org Subject: Re: EXT4 Larger Than 16TB Thank you for your help. Unfortunately, it didn't give me the answer I had hoped for. Darn! -- tune2fs 1.42.5 (29-Jul-2012) Filesystem volume name: <none> Last mounted on: /mnt/dataRaid Filesystem UUID: 60171591-358c-4b6a-9b29-684c1b964aa8 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 503316480 Block count: 4026531840 Reserved block count: 201326591 Free blocks: 1301052106 Free inodes: 502075987 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 64 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 4096 Inode blocks per group: 256 RAID stride: 128 RAID stripe width: 512 Flex block group size: 16 Filesystem created: Fri Dec 7 01:00:01 2012 Last mount time: Tue Jul 16 21:09:31 2013 Last write time: Tue Jul 16 21:09:31 2013 Mount count: 2 Maximum mount count: -1 Last checked: Mon Jul 8 15:21:15 2013 Check interval: 0 (<none>) Lifetime writes: 9 TB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: 62024c47-022f-448e-a697-e3fb4ed618f3 Journal backup: inode blocks On Sun, Jul 21, 2013 at 7:52 PM, Zheng Liu <gnehzuil.liu@...il.com> wrote: > Hi Michael, > > On Sun, Jul 21, 2013 at 07:44:12PM -0500, Michael wrote: >> Also, in /etc/mke2fs.conf(Ubuntu has this by default): >> ext4 = { >> features = >> has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize >> auto_64-bit_support = 1 >> inode_size = 256 >> } >> >> ext4dev = { >> features = >> has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize >> inode_size = 256 >> options = test_fs=1 >> } >> >> >> >> Also, any info on how to find out if my fs is 64 bit or not? I don't >> know what this config was back when I made the system. > > You could use 'tune2fs -l ${DEV}' to check whether 64bit feature is > enabled. Here is a sample result: > > $ sudo tune2fs -l /dev/sda1 > tune2fs 1.43-WIP (21-Jan-2013) > Filesystem volume name: <none> > Last mounted on: <not available> > Filesystem UUID: 5abc13bd-01d9-41ff-b7ca-a028b3d610f8 > Filesystem magic number: 0xEF53 > Filesystem revision #: 1 (dynamic) > Filesystem features: has_journal ext_attr resize_inode dir_index > filetype extent 64bit flex_bg sparse_super large_file huge_file > ^^^^^ > > uninit_bg dir_nlink extra_isize > Filesystem flags: signed_directory_hash > Default mount options: user_xattr acl > Filesystem state: clean > Errors behavior: Continue > Filesystem OS type: Linux > Inode count: 5021696 > Block count: 20081242 > Reserved block count: 1004062 > Free blocks: 19719931 > Free inodes: 5021685 > First block: 0 > Block size: 4096 > Fragment size: 4096 > Reserved GDT blocks: 1024 > Blocks per group: 32768 > Fragments per group: 32768 > Inodes per group: 8192 > Inode blocks per group: 512 > Flex block group size: 16 > Filesystem created: Mon Jul 22 08:50:15 2013 > Last mount time: n/a > Last write time: Mon Jul 22 08:50:25 2013 > Mount count: 0 > Maximum mount count: -1 > Last checked: Mon Jul 22 08:50:15 2013 > Check interval: 0 (<none>) > Lifetime writes: 1358 MB > Reserved blocks uid: 0 (user root) > Reserved blocks gid: 0 (group root) > First inode: 11 > Inode size: 256 > Required extra isize: 28 > Desired extra isize: 28 > Journal inode: 8 > Default directory hash: half_md4 > Directory Hash Seed: 7d9a465d-3e37-4d41-af45-fff9c682f8ec > Journal backup: inode blocks > > Regards, > - Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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