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Message-ID: <CAGJTRchJ4Mq5in0nXeeF8mA2A=yub7kv4OohUb_QpKtEKCWM-A@mail.gmail.com> Date: Sun, 21 Jul 2013 19:44:12 -0500 From: Michael <mike@...ftx.net> To: "H. Peter Anvin" <hpa@...or.com>, Michael <mike@...ftx.net>, "Theodore Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org Subject: Re: EXT4 Larger Than 16TB 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. On Sun, Jul 21, 2013 at 6:43 PM, Zheng Liu <gnehzuil.liu@...il.com> wrote: > On Sun, Jul 21, 2013 at 03:47:04PM -0700, H. Peter Anvin wrote: >> On 07/09/2013 06:45 AM, Michael wrote: >> > No problem, it sounds like it would be a very tricky bit of code to >> > write. Shuffling metadata blocks is not an easy feat. >> > >> > Is there any way to tell if I'm using 64 bit? Ubuntu defaults to >> > setting ext4 to default, but I don't know if it did when I first >> > created this FS. >> > >> > If it is 64 bit, the resize2fs utility should be able to handle this >> > one kernels >3.7, correct? >> > >> >> Is there a way to force this at mkfs time? I.e. "I know I may want to >> expand this filesystem beyond the 16 TB point?" > > Hi Peter, > > You could use 'mkfs.ext4 -O 64bit' to force enable 64bit support. In > addition, we will enable this feature by default. Lukas has a patch to > fix it. Here is the link [1]. > > 1. http://patchwork.ozlabs.org/patch/253234/ > > 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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