I use rsync to take backups of my ocfs2 filesystems (since nothing else really supports it out of the box). Unfortunately, it's very slow, on the order of 10 times slower than the same files on a reiserfs filesystem. The filesystems contain about 100gb of data, though I'm backing up nearly 2 million files, and that grows every day (it's a webroot for a few webservers). I heard rumors of dir hashing back in the day, any idea when anything that will help my current situation will be added? I thought of using inotify coupled with ocfs2 to take backups in real time, unfortunately, inotify doesn't seem to work with ocfs2, which is unfortunate. Ideas? Michael -------------- next part -------------- An HTML attachment was scrubbed... URL: http://oss.oracle.com/pipermail/ocfs2-users/attachments/20080701/6f13f3f7/attachment.html
gsc at pba2 ~ $ uname -a
Linux pba2.bodybuilding.com 2.6.24-gentoo-r8 #1 SMP Tue May 20 15:04:37 PDT 2008
x86_64 Intel(R) Xeon(R) CPU 5148 @ 2.33GHz GenuineIntel GNU/Linux
pba2 ~ # debugfs.ocfs2 -R "stats" /dev/sdc1
Revision: 0.90
Mount Count: 0 Max Mount Count: 20
State: 0 Errors: 0
Check Interval: 0 Last Check: Sun Dec 30 00:15:02 2007
Creator OS: 0
Feature Compat: 1 BackupSuper
Feature Incompat: 16 Sparse
Tunefs Incomplete: 0 None
Feature RO compat: 0 None
Root Blknum: 5 System Dir Blknum: 6
First Cluster Group Blknum: 3
Block Size Bits: 12 Cluster Size Bits: 12
Max Node Slots: 10
Label: pba
UUID: BD59CD9153324E1BAC360B1F1D4B6918
Inode: 2 Mode: 00 Generation: 3898535000 (0xe85eec58)
FS Generation: 3898535000 (0xe85eec58)
Type: Unknown Attr: 0x0 Flags: Valid System Superblock
User: 0 (root) Group: 0 (root) Size: 0
Links: 0 Clusters: 139458249
ctime: 0x47775386 -- Sun Dec 30 00:15:02 2007
atime: 0x0 -- Wed Dec 31 16:00:00 1969
mtime: 0x47775386 -- Sun Dec 30 00:15:02 2007
dtime: 0x0 -- Wed Dec 31 16:00:00 1969
ctime_nsec: 0x00000000 -- 0
atime_nsec: 0x00000000 -- 0
mtime_nsec: 0x00000000 -- 0
Last Extblk: 0
Sub Alloc Slot: Global Sub Alloc Bit: 65535
pba2 ~ # cat /proc/meminfo
MemTotal: 8195240 kB
MemFree: 126828 kB
Buffers: 968396 kB
Cached: 2518248 kB
SwapCached: 0 kB
Active: 2598712 kB
Inactive: 3121128 kB
SwapTotal: 2008116 kB
SwapFree: 2007932 kB
Dirty: 9568 kB
Writeback: 0 kB
AnonPages: 2233240 kB
Mapped: 42972 kB
Slab: 2017924 kB
SReclaimable: 798440 kB
SUnreclaim: 1219484 kB
PageTables: 212700 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 6105736 kB
Committed_AS: 7952860 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 293184 kB
VmallocChunk: 34359444779 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
5 nodes in the cluster.
Michael
-----Original Message-----
From: Sunil Mushran [mailto:Sunil.Mushran at oracle.com]
Sent: Tuesday, July 01, 2008 4:31 PM
To: Michael Moody
Cc: ocfs2-users at oss.oracle.com
Subject: Re: [Ocfs2-users] Slow backups, slow rsync
Which kernel?
uname -a?
block/cluster sizes?
debugfs.ocfs2 -R "stats" /dev/sdX
How many nodes in your cluster?
memory?
cat /proc/meminfo
Which kernel? uname -a? block/cluster sizes? debugfs.ocfs2 -R "stats" /dev/sdX How many nodes in your cluster? memory? cat /proc/meminfo Michael Moody wrote:> > I use rsync to take backups of my ocfs2 filesystems (since nothing > else really supports it out of the box). Unfortunately, it?s very > slow, on the order of 10 times slower than the same files on a > reiserfs filesystem. The filesystems contain about 100gb of data, > though I?m backing up nearly 2 million files, and that grows every day > (it?s a webroot for a few webservers). > > I heard rumors of dir hashing back in the day, any idea when anything > that will help my current situation will be added? > > I thought of using inotify coupled with ocfs2 to take backups in real > time, unfortunately, inotify doesn?t seem to work with ocfs2, which is > unfortunate. > > Ideas? > > Michael > > ------------------------------------------------------------------------ > > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users at oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users