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Old 08-22-2010, 04:27 PM   #1
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Online resize2fs: Operation not permitted While trying to add group #14080

Hello All,

I am running Oracle Enterprise Linux x64 5.5 on an HP Proliant DL380 G6 attached to various SAN's via fibre channel. I have setup multipath, edited multipath.conf, lvm.conf, and after some trial and error, everything behaves and looks as it should in regard to multipath.

However, when I try to resize a multipath ext3 lvm filesystem, The operation runs for a while, but then dies and I get the above error. I then see this error in /var/log/messages:

EXT3-fs warning (device dm-9): ext3_group_add: No reserved GDT blocks, can't resize

-I am only using the /dev/mapper/ paths to the filesystem (ie, resize2fs /dev/mapper/testvol-lvol1 128G)
-if I unmount the filesystem, resize2fs works fine
-Have tried removing and re-adding journal file via tune2fs with no luck
-The VG has plenty of room in it and is composed of a 100GB and 200GB partition.
-Inode resize is on in the filesystem

I am wondering if online resize2fs is only for small filesystems or not recommended as a best practice or just not generally done??? As I mentioned, the operation works fine offline if I unmount the filesystem, but this won't be an option once system is in production.

Any ideas? Thanks in advance!
Old 08-22-2010, 05:38 PM   #2
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tune2fs -l /dev/mapper/testvol-lvol1 | grep features
Does "resize_inode" appear? If no, your filesystem does not support online resizing. When was it created? New enough versions of mkfs (e2fsprogs 1.39) will include that by default.
Old 08-22-2010, 07:40 PM   #3
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Thanks for the reply!

I meant to say that inode resize was on in original post, not resize inode.

tune2fs -l /dev/mapper/testvol-lvol1 | grep features

Filesystem features: has_journal resize_inode dir_index filetype needs_recovery sparse_super

I just created FS today as I am testing, so it is an EXT3 filesystem. I just recreated a new FS from scratch from command line and same results. Started with a 400mb filesystem size and it died at 45GB with same error. I am wondering if online resize2fs only works with smaller filesystems less than 50GB...?

very strange...
Old 08-30-2010, 08:23 AM   #4
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Any ideas on this?



blocks, lvm, multipath, resize2fs

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