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2
votes
2answers
50 views

Re-partitioning /home partition in CentOS

I have a CentOS 7 system with a /home partition that is too large. I wish to reduce its size but it's XFS so that's pretty much impossible. Since I don't have much user data anyway (only 1 user ...
3
votes
0answers
123 views

Which file system (among XFS, BTRFS and EXT4 only) does provide the best data resilience to disk corruption? [closed]

Question: Given these three filesystems: XFS, BTRFS and EXT4, I'm wishing to know which does provide the best data resilience to data corruption in a setup without RAID. And, of course, why? ...
0
votes
1answer
42 views

XFS on Volume Group or Mdadm Raid 0

Im starting to use XFS because I want to create a highly parallel disk array and experimenting on just 2 drives for now. I had thought that if I used a logical volume group to join two physical ...
0
votes
0answers
18 views

xfs_quota Quota always zero

I run this command: xfs_quota -x -c 'report -h' /eamorr/home Here is the output User quota on /eamorr/home (/dev/mapper/mpathe) Blocks User ID Used Soft ...
2
votes
0answers
281 views

Unable to mount XFS volume after reboot - unknown filesystem type 'xfs'

I have an aws ec2 instance that's been running Ubuntu 12.04 for a good long while. It has attached to it an EBS volume formatted with xfs. Today after a reboot, I'm unable to mount this volume. ...
0
votes
0answers
44 views

XFS Tracing with Ftrace

I use a disk drive formatted with xfs.My OS is Ubuntu Server 12.04 LTS (kernel 3.11.0-22-generic). I would like to use ftrace (e.g.,trace-cmd record -e xfs\*) but under ...
1
vote
1answer
67 views

mkfs.xfs /dev/custom_dev

I try to format a custom block device with mkfs.xfs in Ubuntu Server 12.04 LTS. In the end terminal prints: cache_node_put: node put on refcount 0 (node=0x1cd7810) cache_node_put:node put on node ...
1
vote
0answers
27 views

How is default readahead value determined

I have two different devices running XFS and the default readahead value set differs between the two disks. Why is that ? How is the default size computed ? Is it device dependent ? I might also add ...
5
votes
3answers
188 views

What filesystem metadata operations are actually journaled in ext4 & xfs?

I can't find a simple, straight answer about which filesystem metadata operations are actually persisted to the ext4 & xfs filesystem journals. Note that I am not inquiring about what POSIX ...
0
votes
0answers
128 views

Fixing permissions on a buffalo NAS (XFS via SMB)

I have a Buffalo dual harddrive NAS and plugged one of the drives directly to an SATA port to speed up the file transfer (100 MBit is a 'bit' slow when transfering 2 TB of files). I used a live Ubuntu ...
0
votes
2answers
2k views

How do I mount an XFS partition via /etc/fstab and non-root users can r/w to it?

I have 2 XFS partitions I want to mount via /etc/fstab: /dev/sdb1 /media/data xfs defaults 0 2 /dev/sdc1 /media/backup xfs defaults 0 ...
1
vote
2answers
207 views

XFS: rm does not terminate, xfs_repair not possible

I have a 500 GByte disk with a single XFS file system on it (EDIT: the OS is on another disk). On this disk I have backup data in the form of multiple hard-linked copies of the original data. After ...
2
votes
0answers
133 views

DMX problem with fonts

I have problem with fonts in xdmx: I am starting new X startx -- /usr/bin/X11/Xdmx :1 -display 192.168.0.104:0 -fontpath tcp/192.168.0.102:7100 (II) dmx: Generation: 1 (II) dmx: ...
2
votes
1answer
422 views

EBS Volumes Mounted On Wrong Directory After Reboot

I have three EBS RAID 10 volumes in my /etc/fstab on an Amazon AMI hosted with AWS/EC2... Everytime I reboot the instance, the volumes get mounted to the wrong mount points. Any ideas on how I can ...
1
vote
1answer
295 views

DD-WRT on WZR-HP-AG300H: Want XFS support; what firmware has kernel 3.8.13-1?

I installed latest DD-WRT firmware to my wifi router WZR-HP-AG300H. I got the firmware from here (05-27-2013-r21676). I'm currently trying to install XFS file system support because my USB hard disk ...
4
votes
2answers
1k views

Restrict file access to append only

I have a directory with log files and I'm putting logs from script launched by users into them. Logging with syslog doesn't seem possible in this case. (non-daemon rsync) I want the users to have ...
0
votes
1answer
2k views

File system jfs/btrfs/xfs/ext4 [closed]

I was looking into some of the requirement, where huge amount of recursive files are written and deleted and looking forward if any FS (file system) as such gives advantage on others. I am trying to ...
1
vote
2answers
534 views

xfs quota not reliable

I have enabled quotas on an xfs-partition. But it seems to be broken: $ echo asdf >/disk/l/data/avi/foo -su: /disk/l/data/avi/foo: Disk quota exceeded $ quota -f /disk/l Disk quotas for user avi ...
4
votes
1answer
3k views

What is the difference between a symlink and binding with fstab?

In Eric Hammond's article Running MySQL on Amazon EC2 with EBS he shows how to add a second drive (/vol/) and then progresses to move mysql's config and data there. /sdh gets mounted as /vol by ...
3
votes
1answer
106 views

Copying a file that is written at the same time

This related question can't solve my exact problem, so I'm writing a similar question. My scenario is the following: a program (run by wine) writes to a file sized about 10-500 KB. About 1 KB ...
5
votes
2answers
533 views

xfs disk usage is 15-30% bigger than the files

xfs seems to use 15-30% more disk space than the files require: # du 0 . # dd if=/dev/zero of=test bs=1M count=5k 5120+0 records in 5120+0 records out 5368709120 bytes (5,4 GB) copied, 10,527 ...
4
votes
1answer
684 views

Is xfs_fsr safe to interrupt?

Is it safe to interrupt (Ctrl-C) a long running xfs_fsr job? I'm attempting to defragment a very large XFS volume.
4
votes
1answer
497 views

Resizing logical volume with no free extents but with free disk space

I have a 7.9 TB logical volume formatted with XFS filesystem. I have 8 1 TB RAID devices as physical volumes, and 1 volume group that contains all of these devices. I have 2.5 TB free space on my ...