Re: [CentOS] Creating 38TB ext4 FS

2013-09-27 Thread John R Pierce
On 9/26/2013 10:53 PM, g wrote: >> its an xfs specific mount option. see the man pages for mount (8), >> >under*Mount options for xfs*... >> > >> > > yes, as stated above; > >i understand_mount_options_. i do not find it in "man fstab". from man fstab, The fourth field, (fs_mntops)

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread g
On 09/27/2013 12:53 AM, g wrote: > > > On 09/26/2013 11:54 PM, John R Pierce wrote: >> On 9/26/2013 9:30 PM, g wrote: >>> yes, i understand mount options. i do not find it listed in >^ >>> 'man fstab' for the clone that i am currently using. > ^ >

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread g
On 09/26/2013 11:54 PM, John R Pierce wrote: > On 9/26/2013 9:30 PM, g wrote: >> yes, i understand mount options. i do not find it listed in ^ >> 'man fstab' for the clone that i am currently using. ^ >> >> looks like i will have to wait until i get

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread John R Pierce
On 9/26/2013 9:30 PM, g wrote: > yes, i understand mount options. i do not find it listed in > 'man fstab' for the clone that i am currently using. > > looks like i will have to wait until i get centos iso downloaded > and installed so i can move out of os i am currently using. its an xfs specifi

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread g
On 09/26/2013 10:44 PM, Keith Keller wrote: > On 2013-09-27, g wrote: >> >> would you please explain on using 'inode64' in 'fstab'. > > It's a mount option, so goes in the fourth column with the other mount > options (comma-separated). yes, i understand mount options. i do not find it listed in

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread Keith Keller
On 2013-09-27, g wrote: > > would you please explain on using 'inode64' in 'fstab'. It's a mount option, so goes in the fourth column with the other mount options (comma-separated). --keith -- kkel...@wombat.san-francisco.ca.us ___ CentOS mailing l

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread g
On 09/26/2013 06:28 PM, John R Pierce wrote: > On 9/26/2013 2:27 PM, Keith Keller wrote: >> so that I know >> how urgent it is for me to migrate to inode64. > > you realize, 'migrate' is trivial? > > mount -o remount,inode64 /dev/whatever > > and replace 'defaults' with 'inode64' on the line in /

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread John R Pierce
On 9/26/2013 6:54 PM, Keith Keller wrote: > Yes. I also realize that I have NFS clients and am exporting a > subdirectory, so I want to reorganize my share to export the top-level > directory instead. Since this involves a disruptive change to my > clients I need to schedule such work, ideally at

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread Keith Keller
On 2013-09-26, John R Pierce wrote: > On 9/26/2013 2:27 PM, Keith Keller wrote: >> so that I know >> how urgent it is for me to migrate to inode64. > > you realize, 'migrate' is trivial? Yes. I also realize that I have NFS clients and am exporting a subdirectory, so I want to reorganize my share

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread John R Pierce
On 9/26/2013 2:27 PM, Keith Keller wrote: > so that I know > how urgent it is for me to migrate to inode64. you realize, 'migrate' is trivial? mount -o remount,inode64 /dev/whatever and replace 'defaults' with 'inode64' on the line in /etc/fstab so it does it next time too. thats it. -- jo

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread g
On 09/26/2013 04:27 PM, Keith Keller wrote: <> > So following up on that, I have a question: I have a largish XFS > filesystem which is currently not mounted inode64. I would like to know > how close I am to filling up the inodes in the first 1TB, so that I know > how urgent it is for me to mig

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread John R Pierce
On 9/26/2013 2:27 PM, Keith Keller wrote: > So following up on that, I have a question: I have a largish XFS > filesystem which is currently not mounted inode64. I would like to know > how close I am to filling up the inodes in the first 1TB, so that I know > how urgent it is for me to migrate to

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread Keith Keller
On 2013-09-20, John R Pierce wrote: > for large xfs file systems, be sure to mount with option inode64. There are a bunch of FAQ entries at the XFS site about this issue. Here's one of them: http://xfs.org/index.php/XFS_FAQ#Q:_What_is_the_inode64_mount_option_for.3F The other issues about using

Re: [CentOS] Creating 38TB ext4 FS

2013-09-26 Thread Peter Wood
Very useful information John. Thank you. (Your email slipped through the cracks and I just saw it by accident. I'm happy I didn't loose it.) On Fri, Sep 20, 2013 at 3:21 PM, John R Pierce wrote: > On 9/20/2013 2:27 PM, Peter Wood wrote: > > XFS worked. Thanks a lot. > > for large xfs file syste

Re: [CentOS] Creating 38TB ext4 FS

2013-09-20 Thread John R Pierce
On 9/20/2013 2:27 PM, Peter Wood wrote: > XFS worked. Thanks a lot. for large xfs file systems, be sure to mount with option inode64. there's one caveat on XFS in Linux, when used as a nfs export... if you JUST export your file system root, then you're fine, but if you like to have multiple sep

Re: [CentOS] Creating 38TB ext4 FS

2013-09-20 Thread Nux!
On 20.09.2013 21:58, Peter Wood wrote: > mkfs.ext4 fails to create 38TB file system on CentOS 6.4 64bit with > this > error: > > mkfs.ext4: Size of device /dev/vg02/vtapes too big to be expressed in > 32 > bits > using a blocksize of 4096. > EXT4 filesystems are limited (on RHEL) to 16

Re: [CentOS] Creating 38TB ext4 FS

2013-09-20 Thread Peter Wood
XFS worked. Thanks a lot. On Fri, Sep 20, 2013 at 2:05 PM, Nux! wrote: > On 20.09.2013 21:58, Peter Wood wrote: > > mkfs.ext4 fails to create 38TB file system on CentOS 6.4 64bit with > > this > > error: > > > > mkfs.ext4: Size of device /dev/vg02/vtapes too big to be expressed in > > 32 > > bi