Re: amandad
I'm having trouble with amanda 2.4.1-p1 running on a RedHat-Linux-Server. Everything is working fine.. except the problem, that sonetimes the amandad is stopped. Can anyone tell me why? This is the message in /var/log/messages: May 4 14:59:56 earth xinetd[12802]: amanda service was deactivated because of looping May 4 14:59:56 earth xinetd[12802]: recv: Ungueltiger Dateideskriptor (errno=9) There was an error in my /etc/xinetd.d/amanda. I forgot to set wait = yes. Amanda is now working without further problems for three or four days.
RE: amanda failed
hello, and thanks for your answers. If my tar is broken or my amanda version is wrong, why it is the first time it happens since i started using amanda 4 months ago??? I will follow your advices. I recieved this mail, what is the meaning of no backup size line? Why the dump failded??? That message means Amanda could not parse the last line of output from tar that says how big the backups were. It reports the line: ? Total bytes written: nan (0B, ?B/s) That's clearly wrong. My guess is your version of GNU tar is broken. What version are you using? If it's 1.13 based, you need at least 1.13.17, or better yet, 1.13.19. If it's 1.12, you need the patch from www.amanda.org (although I don't think it affects this particular problem). FYI, these errors: | gtar: ./desar/desar11/LineaBase/lotoserver/var/socks/sock.bbox_server: socket ignored are fixed in the latest Amanda (2.4.2p2).
file system problem - umount
Hi people, I have a problem. When amdump send the message of backup, there is the message: canopusc0t6d0s0 lev 0 FAILED [/usr/sbin/ufsdump returned 3] FAILED AND STRANGE DUMP DETAILS: /-- canopusc0t6d0s0 lev 0 FAILED [/usr/sbin/ufsdump returned 3] sendbackup: start [canopus:c0t6d0s0 level 0] sendbackup: info BACKUP=/usr/sbin/ufsdump sendbackup: info RECOVER_CMD=/bin/gzip -dc |/usr/sbin/ufsrestore -f... - sendbackup: info COMPRESS_SUFFIX=.gz sendbackup: info end | DUMP: Writing 32 Kilobyte records | DUMP: Date of this level 0 dump: Thu May 10 22:21:14 2001 | DUMP: Date of last level 0 dump: the epoch | DUMP: Dumping /dev/rdsk/c0t6d0s0 (canopus:/export/home2) to standard output. | DUMP: Mapping (Pass I) [regular files] | DUMP: Mapping (Pass II) [directories] | DUMP: Estimated 2937362 blocks (1434.26MB) on 0.02 tapes. | DUMP: Dumping (Pass III) [directories] | DUMP: Dumping (Pass IV) [regular files] | DUMP: Warning - cannot read sector 600384 of `/dev/rdsk/c0t6d0s0' | DUMP: Warning - cannot read sector 600400 of `/dev/rdsk/c0t6d0s0' After amdump, the file system /dev/rdsk/c0t6d0s0 is unmounted. Why it happens? Someone knows what is happens? Thanks a lot.
Re: file system problem - umount
Marcelo G. Narciso wrote: | DUMP: Warning - cannot read sector 600384 of `/dev/rdsk/c0t6d0s0' | DUMP: Warning - cannot read sector 600400 of `/dev/rdsk/c0t6d0s0' It looks to me like you have some bad sectors on your disk, or possibly a disk drive that is on its way to failing, like the head is having trouble seeking to some sectors. The filesystem was probably automatically unmounted to prevent corruption, or at least I have seen something similar happen with an XFS filesystem on SGI IRIX. Check the system logs. After amdump, the file system /dev/rdsk/c0t6d0s0 is unmounted. Why it happens? Someone knows what is happens? Thanks a lot. -- Jonathan F. Dill ([EMAIL PROTECTED])
compatible changers list 4 Solaris2.0
Hi, did anybody compile a list for compatible changers fro Solaris2.0? :-) e.g. does the HP-Dat4 Six-Slot work ( probably yes) or even the new HP LTO Ultrium 1/9 ? Werner Mohren System- and Networkmanager Research Center Ornithology of the Max Planck Society Max Planck Institute for Behavioral Physiology
Re: tar question
On Fri, May 11, 2001 at 12:51:43AM -0400, Jon LaBadie wrote: On Thu, May 10, 2001 at 08:41:24PM -0400, Ray Shaw wrote: On that note, it is annoying that if I have an exclude file, say /etc/amanda/exclude.home, running amanda with that file produces different results than: tar cvf /dev/null /home -X /etc/amanda/exclude.home I don't think amanda tar's /home, I think it cd's to /home and tar's . (current dir). Thus your exclude file should be relative to ., not /home. Ah, yes, that's correct. Thanks for pointing that out; it was the first step in creating the Tower of Globbing in my last post :) For testing, I now use: cd /home tar cvf /dev/null . -X /root/exclude moo and then look at the contents of moo. -- --Ray - Sotto la panca la capra crepa sopra la panca la capra campa
Re: tar question
On Thu, May 10, 2001 at 08:36:07PM -0500, John R. Jackson wrote: ... I'd like to back up at least their mail, and probably web directories. ... I've been trying to do this with exclude lists, but I haven't hit the solution yet. ... Wow! I wouldn't have had the guts to try this with exclude lists. They give me (real :-) headaches just trying to do normal things :-). Brave or stupid, I've gotten it working with some help from a LUG member on my sh globbing. If you have a line like so in your disklist: myhost /home myhost-home and the myhost-home dumptype is calling /etc/amanda/exclude.myhost-home, which contains this: ./*/? ./*/?? ./*/??? ./*/?* ./*/[!mM]??? ./*/[Mm][!a]?? ./*/[Mm]a[!i]? ./*/[Mm]ai[!l] Then /home/*/Mail and /home/*/mail will be backed up. This creation of evil could easily be extended to back up /home/*/public_html, too, or whatever else you wanted. Maybe you could do it with inclusion instead of exclusion? Take a look at: ftp://gandalf.cc.purdue.edu/pub/amanda/gtar-wrapper.* During the pre_estimate you could run find to gather a list of what you want to back up, squirrel that away and then pass it to gtar for both the estimate and the real run. Yes, but that's a compile-time option, right? As I'm a university student and will be replaced in a few years, I don't want my successor to be confused when apt-get dist-upgrade breaks the /home backup :) Of course, I hope we have a bigger tape drive by then... -- --Ray - Sotto la panca la capra crepa sopra la panca la capra campa
GNU tar syntax (or How does amanda do that?)
Some times I would like to just use GNU tar at the command line for a quick archive to a tape device on a remote host. My Amanda system seems to do this very well. Amanda some how uses GNU tar to archive files on a Solaris 2.6 host to a remote tape device that is attached to a Linux (7.0) host. Yet when I try to do this at the command line I get tar complaints. Am I using the wrong syntax? solaris-host#/usr/local/bin/tar -cvf linux-host:/dev/nst0 /home sh: unknown host /usr/local/bin/tar: Cannot open linux-host:/dev/nst0: I/O error /usr/local/bin/tar: Error is not recoverable: exiting now Why the odd error: sh: unknown host In every respect these two host know about each other. with wide open permissions for logins, .rhosts etc. I had read some posts about a buggy version of GNU tar. The GNU mirror sites don't seem to specify any revisions, just 1.13 not the rumored 1.13.19 or the 1.13.17 which is running on my linux host. But like I said, as long as I let Amanda do the tar all is well. I just wanted to be able to do a quick tar on the Solaris host without changing any of my amanda configurations. What say you good people? Paul begin:vcard n:Brannigan;Paul tel;pager:303-826-2365 tel;fax:303-245-1025 tel;work:303-245-1045 x-mozilla-html:TRUE adr:;;3434 47th St.;Boulder;Colorado;80301;USA version:2.1 email;internet:[EMAIL PROTECTED] title:Support Engineer x-mozilla-cpt:;-5024 fn:Paul Brannigan end:vcard
Re: Help with Tapeless Configuration
I'm new to Amanda and to this list... Welcome! First, when Amanda runs, it reports itself as 2.4.2p1 and not p2. Is the tapeio branch not in sync with the latest release? It is in sync, I just forgot to update the p1 to p2. It's fixed in the sources so if you do a cvs update and then start over at the autogen, it should show the right thing. OK, so I read that Amanda tapes all need to be labeled, so I ran amlabel. After that, it let me run amdump OK. But then I ran amdump again to try another dump, but Amanda complained cannot overwrite active tape. How are tapes ejected or rotated in the tapeless configuration? ... You need to create multiple file:/whatever directories, one per tape, then either change tapedev in amanda.conf to point to the current one or create a symlink and put that in tapedev then change the symlink. Or you can configure up one of the tape changers (e.g. chg-multi). They should work with file: devices. filemark 100 kbytes # Is this needed for a hard disk? This is not needed for a disk. speed 1000 kbytes# Local speed of the hard disk? Is this used? Speed is not used by Amanda. One more question... when I tried to do a dump of /etc, I got the following: ? You can't update the dumpdates file when dumping a subdirectory sendbackup: error [/sbin/dump returned 1] What am I doing wrong? ... You're trying to use dump on something other than an entire file system. Dump (in general) only works on whole file systems, not subdirectories. If you want to do a subdirectory, use GNU tar. Clinton Hogge John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
Re: file system problem - umount
I have a problem. When amdump send the message of backup, there is the message: ... | DUMP: Warning - cannot read sector 600384 of `/dev/rdsk/c0t6d0s0' ... After amdump, the file system /dev/rdsk/c0t6d0s0 is unmounted. Why it happens? There isn't enough information here to know how to answer. For one thing, what OS are you using on the client? For another, this isn't anything Amanda would do. You need to talk to your OS vendor. My guess (and this is purely a guess) is that the disk is broken (hence the cannot read errors) and the OS decided to unmount it for you. John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
sendbackup*debug
John R. Jackson wrote: What are the complete contents a typical /tmp/amanda/sendbackup*debug file for one of the failed runs? Don't have any from a failed run. Below is my only sendbackup*debug file, which is from the successful run. # cat /tmp/amanda/sendbackup*debug sendbackup: debug 1 pid 17143 ruid 507 euid 507 start time Fri May 4 20:45:05 2001 /usr/local/libexec/sendbackup: version 2.4.2p2 sendbackup: got input request: GNUTAR /home/amanda 0 1970:1:1:0:0:0 OPTIONS |;bsd-auth; parsed request as: program `GNUTAR' disk `/home/amanda' lev 0 since 1970:1:1:0:0:0 opt `|;bsd-auth;' sendbackup: try_socksize: send buffer size is 65536 sendbackup: stream_server: waiting for connection: 0.0.0.0.2865 sendbackup: stream_server: waiting for connection: 0.0.0.0.2866 waiting for connect on 2865, then 2866 sendbackup: stream_accept: connection from 192.168.1.100.2867 sendbackup: stream_accept: connection from 192.168.1.100.2868 got all connections sendbackup-gnutar: doing level 0 dump as listed-incremental to /usr/local/var/amanda/gnutar-lists/dellmachine_home_amanda_0.new sendbackup-gnutar: doing level 0 dump from date: 1970-01-01 0:00:00 GMT sendbackup: spawning /usr/local/libexec/runtar in pipeline sendbackup: argument list: gtar --create --file - --directory /home/amanda --one-file-system --listed-incremental /usr/local/var/amanda/gnutar-lists/dellmachine_home_amanda_0.new --sparse --ignore-failed-read --totals . sendbackup-gnutar: /usr/local/libexec/runtar: pid 17144 sendbackup: pid 17143 finish time Fri May 4 20:45:05 2001 ... This looks just like a failed run. I didn't think this ever worked for you. ... Can you pls tell me what gives this away as a failed run? To me, it looks very much like a sendbackup*debug from a successful run (i have my sources ;). The time elapsed is small because only a very small directory was involved. thank you, george
Re: missing files
What shows an error occurred? ... By error I meant you didn't see all the entries in amrecover that you expected to see. There isn't anything in the sendbackup*debug file to indicate what went wrong (or even that anything did go wrong). The more useful place to look is the index file (see below). I am not cleaning out everything between tests. I don't know how to do that or what that means. Since you're having amrecover/index problems, the important thing to remove is all the index files related to the test. Run amgetconf config indexdir to see where the top of the index directory is, then cd to the host directory within there and then cd to the disk directory within that. Remove all the *.gz files. Then when you run another test you can be sure amrecover (amindexd) isn't see old data by mistake. You can zcat the most recent file Amanda creates to see what amrecover will have to work with. If you see all the files you expect to, but amrecover doesn't show them, then that's one kind of problem (with the index file itself or amrecover). If you don't see the files you expect, then that's a problem with the backup itself. george John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
Re: GNU tar syntax (or How does amanda do that?)
Amanda some how uses GNU tar to archive files on a Solaris 2.6 host to a remote tape device that is attached to a Linux (7.0) host. Yet when I try to do this at the command line I get tar complaints. Am I using the wrong syntax? Yes. Amanda doesn't do things the way you're thinking. It does not pass the tape device name to GNU tar and have it write to the tape. Amanda runs all (not just GNU tar) backup programs in a mode that has them write their image to stdout. Amanda then gathers that and sends it across the wire to the server. The server may write it into the holding disk or directly to tape. But GNU tar (or ufsdump, etc) know nothing about this. solaris-host#/usr/local/bin/tar -cvf linux-host:/dev/nst0 /home sh: unknown host /usr/local/bin/tar: Cannot open linux-host:/dev/nst0: I/O error /usr/local/bin/tar: Error is not recoverable: exiting now Why the odd error: sh: unknown host I just tried this between two of my machines and things worked fine. Then I tried deliberately entering a bad host name: $ gtar cvf xxx:/tmp/jrj/z . xxx: unknown host gtar: Cannot open xxx:/tmp/jrj/z: I/O error gtar: Error is not recoverable: exiting now which matches what you're seeing except xxx instead of sh. So there is clearly something wrong in the host name part of what you tried to do, but unless you entered sh as the host name, I don't know exactly what. What happens if you do this: $ rsh linux-host pwd I had read some posts about a buggy version of GNU tar. The GNU mirror sites don't seem to specify any revisions, just 1.13 not the rumored 1.13.19 or the 1.13.17 which is running on my linux host. I don't know what they have. You need to get the .17/.19 from alpha.gnu.org. Paul John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
ERROR port 40001 not secure
Hello I have a little problem, I am running my AMANDA backup server on my private network to backup some clients on my internet network. The problem is that between these two network I use NAT and NAT does some port mapping so it translates for example port 858 to 40001. And it looks like to be able to backup a client the client needs to receive a request from a source port lower than 1024. So is there any method to disable this on the client side ?? I would like to be able to backup even if the source port is over 1024, I don't care. Or is there another better method to cope with this ?? But I won't make my firewall map ports under 1024 that's not a good solution I think. Thanks for your opinion. Regards, Marc _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Re: ERROR port 40001 not secure
... the client needs to receive a request from a source port lower than 1024. So is there any method to disable this on the client side ?? ... Sure. Look for not secure in common-src/security.c and comment out that test. I would like to be able to backup even if the source port is over 1024, I don't care. If you're sure you understand the security implications of opening this door, go right ahead. I'm curious, though. Why don't you want to let a small privileged port range on the server go through NAT to the clients unaltered? Marc John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
Re: GNU tar syntax (or How does amanda do that?)
John R. Jackson wrote: /usr/local/bin/tar -cvf - /home | rsh linux-host dd of=/dev/nst0 (you may want to specify '-b blocksize' to the tar command... and 'bs=blocksize' to the dd) The only problem with using dd like this is that dd does not do output reblocking. It takes whatever record size comes in (i.e. the size of the read()) and that's what it writes. As far as I have used dd on Linux, I can recommend obs=32k. It does the trick of reblocking. Once I had a slow network between a DLT drive and the host I wanted to backup from: ssh hostname /sbin/dump 0af - / | dd obs=32k of=$TAPE ...was a pain for the tape drive My first guess using a buffer with dd ssh host /sbin/dump 0af - / | dd bs=100M | dd obs=32k of=$TAPE didn't succeed, but when I used ssh host /sbin/dump 0af - / | dd obs=100M | dd obs=32k of=$TAPE the tape drive rocked! Even if the manpage tells you: if you specify bs, ibs and obs will be set to bs, dd will do no reblocking in this case.
Re: problem backing up a host with more than 171 disklist entries of root-tar
This sounds like a classic case of running out of file descriptors -- either on a per-process basis, or on a system-wide basis (more likely per-process, as you seem to be able to reproduce it at will with the same number of disklist entries on that host). It seems to me that Amanda should specifically check for the open/socket/whatever system call that is returning with errno set to EMFILE (or, on some brain damaged systems, EAGAIN). When that happens, Amanda should wait for some of the existing connections to be taken down (i.e., closed). Cheers, Marty Bernhard R. Erdmann wrote: Hi, I'm using Amanda 2.4.2p2 on/for a Linux Box (RH 6.2, 2.2.19, GNU tar 1.13.17) to backup home directories on a NetApp Filer mounted with NFS. Up to and including 171 disklist entries of type root-tar, everything is ok. amcheck complains about the home directories being not accessible (amanda has uid 37), but runtar get's them running with euid 0 (NFS export with no root squashing). It takes about 3 secs for amcheck to check these lines. If I add some more disklist entries of the same type, amcheck hangs for a minute (ctimeout 60) and then reports selfcheck request timed out. Host down? /tmp/amanda gets three more files: amanda.datetime.debug, amcheck... and selfcheck... With up to 171 entries, selfcheck.datetime.debug grows to 28387 Bytes containing 171 lines could not access. Using 172 entries, it stops at 16427 Bytes and contains only 100 lines could not access (o.k. because of NFS permissions). The last line of the disklist is checked first. /tmp/amanda/selfcheck... ends with: selfcheck: checking disk /home/User/cb selfcheck: device /home/User/cb selfcheck: could not access /home/User/cb (/home/User/cb): Permission denied selfcheck: checking disk /home/User/ca selfcheck: device /home/User/ca After adding one or more lines to the disklist file, only the last 100 lines get checked, then an amandad and a selfcheck process is hanging around: $ ps x PID TTY STAT TIME COMMAND 28833 pts/2S 0:00 -bash 28854 pts/2S 0:00 emacs -nw disklist 29000 pts/1S 0:00 -bash 29149 ?S 0:00 amandad 29151 ?S 0:00 /usr/libexec/amanda/selfcheck 29182 pts/3S 0:00 -bash 29227 pts/3S 0:00 less selfcheck.20010511233745.debug 29230 pts/1R 0:00 ps x Killing selfcheck spaws another selfcheck process and this one's debug file stops after having checked the last 100 disklist lines, too. $ kill 29151 $ ps x PID TTY STAT TIME COMMAND 28833 pts/2S 0:00 -bash 28854 pts/2S 0:00 emacs -nw disklist 29000 pts/1S 0:00 -bash 29182 pts/3S 0:00 -bash 29231 ?S 0:00 amandad 29233 ?S 0:00 /usr/libexec/amanda/selfcheck 29234 pts/1R 0:00 ps x $ kill 29233 $ ps x PID TTY STAT TIME COMMAND 28833 pts/2S 0:00 -bash 28854 pts/2S 0:00 emacs -nw disklist 29000 pts/1S 0:00 -bash 29182 pts/3S 0:00 -bash 29238 ?S 0:00 amandad 29240 ?S 0:00 /usr/libexec/amanda/selfcheck 29241 pts/1R 0:00 ps x $ kill 29240 $ ps x PID TTY STAT TIME COMMAND 28833 pts/2S 0:00 -bash 28854 pts/2S 0:00 emacs -nw disklist 29000 pts/1S 0:00 -bash 29182 pts/3S 0:00 -bash 29244 ?S 0:00 amandad 29246 ?D 0:00 /usr/libexec/amanda/selfcheck 29247 pts/1R 0:00 ps x $ kill 29246 $ ps x PID TTY STAT TIME COMMAND 28833 pts/2S 0:00 -bash 28854 pts/2S 0:00 emacs -nw disklist 29000 pts/1S 0:00 -bash 29182 pts/3S 0:00 -bash 29251 pts/1R 0:00 ps x Now it's got killed... Any ideas? -- Marty Shannon, RHCE, Independent Computing Consultant mailto:[EMAIL PROTECTED]
Re: problem backing up a host with more than 171 disklist entries of root-tar
Up to and including 171 disklist entries of type root-tar, everything is ok. ... If I add some more disklist entries of the same type, amcheck hangs for a minute (ctimeout 60) and then reports selfcheck request timed out. Host down? Wow. If it's what I think it is, that bug has been around forever. Sheesh! :-) Please give the following patch a try and let me know if it solves the problem. Basically, there is a deadlock between amandad and the child process it starts (selfcheck, in your case). Amandad gets the request packet, creates one pipe to write the request and one to read the result, then forks the child. It then writes the whole packet to the child, and that's where the problem lies. If the pipeline cannot handle that much data, the write loop will hang and amandad will never clear out the data filling up the read pipe, so the child stops and does not read any more. This patch moves the write loop into the select loop that was already set up to read the child result. I did a minimal test and it didn't seem to break anything. Well, it didn't after I got it to stop dropping core :-). I haven't looked at this w.r.t. 2.5 yet. I suspect things are much different there. John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED] amandad.diff
Dumping live filesystems on Linux 2.4 - Corruption
I am sure everybody has seen this: http://www.lwn.net/2001/0503/kernel.php3 It would seem that one can no longer use dump (assuming one is using Linux 2.4) to backup live filesystems. So is everybody here now using gnutar to backup filesystems on Linux 2.4? Is there any loss of functionality to using gnutar? b. -- Brian J. Murrell
Re: Dumping live filesystems on Linux 2.4 - Corruption
Also Sprach Brian J. Murrell: I am sure everybody has seen this: http://www.lwn.net/2001/0503/kernel.php3 It would seem that one can no longer use dump (assuming one is using Linux 2.4) to backup live filesystems. So is everybody here now using gnutar to backup filesystems on Linux 2.4? Is there any loss of functionality to using gnutar? b. -- Brian J. Murrell Well, that's dump for ext2. I've been using GNU tar under Linux since I've trusted dump for ext2. Now ReiserFS does not have a dump util as far as I know. XFS does have xfsdump which has behavior in between tar and dump (does filesystem access rather than raw device but does not touch atime) so you may try converting to XFS. IBM JFS under AIX's backup util has filesystem and inode backup modes but I don't think their dump for JFS is ready yet. I don't know if anyone had tried BRU with Amanda but it has tar-like syntax and may work without much difficulty. I'm experimenting with XFS now and if I run into any glitches I'll let the Amanda list know. I'd like know how to tell Amanda to use xfsdump rather than GNU tar on XFS partitions. -- C. Chan [EMAIL PROTECTED] Finger [EMAIL PROTECTED] for PGP public key.
Re: Dumping live filesystems on Linux 2.4 - Corruption
... I'd like know how to tell Amanda to use xfsdump rather than GNU tar on XFS partitions. Doesn't just setting program to DUMP in the dumptype do this? Amanda should auto-detect the file system type and run the correct dump program (assuming it found it when you ran ./configure). For instance, it flips back and forth between ufsdump and vxdump on my Solaris systems. If it doesn't do that for you, we need to work on that. C. Chan John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
Re: Dumping live filesystems on Linux 2.4 - Corruption
C. Chan wrote: I'm experimenting with XFS now and if I run into any glitches I'll let the Amanda list know. I'd like know how to tell Amanda to use xfsdump rather than GNU tar on XFS partitions. I think you would have to recompile amanda. I would install xfsdump/xfsrestore and rpm -e dump and then run ./configure script, then it should find xfsdump and choose that as the OS dump program. Then you would assign a non-GNUTAR dumptype to the disk(s) and it should run xfsdump for the backups. Hopefully, the configure script does not check to see if the OS is IRIX or not Linux and decide that xfsdump can't be installed on the system--Then you would have to hack the configure script a little bit to get it to work properly. -- Jonathan F. Dill ([EMAIL PROTECTED])
Re: Linux kernel 2.4 and dump vs. SGI XFS
Hi folks, If you are concerned about dumping live filesystem with Linux kernel 2.4, you might be interested in this: SGI has released an updated anaconda installer CD for Red Hat 7.1 with XFS journaled filesystem support. You load the installer CD first, which includes only the RPMs necessary for XFS support, and then you will need the regular Red Hat 7.1 CDs to complete the installation: ftp://linux-xfs.sgi.com/projects/xfs/download/ With XFS you have the option of using xfsdump for your backups on Linux--AFAIK this should work with amanda, but I have not tested it and YMMV. According to my discussions with Eric Sandeen at SGI, xfsdump does not look at the on-disk metadata structures directly, so it would not be subject to the problem which affects ext2fs and Linux dump. I am forwarding Eric's response to a couple questions that I had about it. Now if only amrecover would work with xfsdump, I would be in heaven :-) Original Message Subject: Re: SGI's XFS: ready for production use? Date: Fri, 11 May 2001 11:39:19 -0500 From: Eric Sandeen [EMAIL PROTECTED] To: Jonathan Dill [EMAIL PROTECTED] CC: [EMAIL PROTECTED] [EMAIL PROTECTED] References: [EMAIL PROTECTED] Jonathan Dill wrote: Hi Eric, Are there plans to keep up with new releases of Red Hat eg. release a new anaconda disk as new versions come out? I have a mostly SGI IRIX shop with a growing Linux population, so it seems somehow attractive to be able to use XFS as a standard--It could mean good things for consistent, automated backups, and being able to toss filesystems around between IRIX and Linux. I would consider adopting this as a standard, but I want to make sure that it will be updated and not a dead end. In terms of Red Hat integration, we don't really have an official guarantee that we'll keep up with the Red Hat releases. However, I expect that we will, unofficially if not officially. There are enough people interested in this inside and outside of SGI that I think this will continue. I have a personal interest in continuing. Of course, if Red Hat and/or Linus picks up XFS, that would be a good thing too, and we're trying to facilitate both of those things. As far as SGI's commitment to XFS on Linux, while I can't speak for the company, I see no signs of that commitment waning. We need XFS on Linux for upcoming products, and for our customers. And of course, the source is out there, so that's a certain level of guarantee that XFS will be around. See also the Long Term Commitment... thread at http://linux-xfs.sgi.com/projects/xfs/mail_archive/0105/threads.html Also, there has been a lot of chatter lately about the problems with Linux dump and ext2fs corruption. Is it true that XFS with the xfsdump tools ought to be free from these sorts of buffer cache issues? Or is it safest on Linux to stick with tools like gnutar which access the FS at a higher level? Here's the scoop from Nathan Scott, our userspace guru: Yes, I also read this thread - it was quite interesting. Though it wasn't explicitly spelt out, I think the problem that was being refered to with dump (not xfsdump) is that it looks at the on-disk metadata structures (via libext2fs) to figure out what needs dumping, etc. tar, et al. use the standard system call interfaces for traversing metadata and obtaining file data, so aren't exposed to the problems associated with dump-on-a-mounted-filesystem. xfsdump uses an xfs-specific ioctl (bulkstat) to walk the filesystem inodes, and doesn't refer directly to the on-disk data structures either, so it should be as safe as tar. HTH, -Eric -- Eric Sandeen XFS for Linux http://oss.sgi.com/projects/xfs [EMAIL PROTECTED] SGI, Inc.
