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Run out of inodes?

To: xfs@xxxxxxxxxxx
Subject: Run out of inodes?
From: Samuel Granjeaud <samuel.granjeaud@xxxxxxxxx>
Date: Fri, 29 Aug 2014 12:08:08 +0200
Delivered-to: xfs@xxxxxxxxxxx
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Hi,

Sorry if the answer is obvious, but I didn't find any clear answer after googling.

I have a XFS system of 18T over LVM. Recently, I could not create new files or directories.

# mkdir tempo
mkdir: cannot create directory `tempo': No space left on device

After deleting a few files, this command runs successfully.

So I think that the system runs out of something, inodes I guess.

But the df diagnosis does not enlight it: only 1% used.

# df -ht xfs
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg1_backup-backup
                       18T   12T  6.6T  63% /mnt/vg1_backup/backup
# df -it xfs
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/mapper/vg1_backup-backup
18874040320 530042 18873510278 1% /mnt/vg1_backup/backup

So what is wrong? How should I solve the problem?

I read about xfs_grow -m, but I am not sure if it could help.
Of course, I rebooted the system before my trials.

Best regards,
Samuel


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