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--
C. Chan
GPG Public Key registered at pgp.mit.edu
king after an isilon? . Snapshots presumably on it? Are there lots of
licenses needed for features?
--
C. Chan
GPG Public Key registered at pgp.mit.edu
hat, since its major feature is the scheduler
which
mixes incrementals and full backups to maximize efficient tape usage.
____
From: C. Chan
Sent: 24 May 2021 17:06
To: David Simpson ; amanda-users@amanda.org
Subject: Re: scale of backup and frequency
Externa
?
ii) How frequent?
iii) What challenges do you have/face?
I'm currently in the process of thinking about how a new backup regime will
look, armed with a new 40 slot tape library and some limited disk storage too.
thanks
David
--
C. Chan
GPG Public Key registered at pgp.mit.edu
-Louis Martineau:
The --exclude-host option is a good idea.
Jean-Louis
2018-05-20 16:41 GMT-04:00 C. Chan :
It would be nice if amdump had some kind of --exclude-host flag
which would skip over that host even if it is in the disklist
file.
--
C. Chan
GPG Public Key registered
backup.
jon
--
Jon H. LaBadie j...@jgcomp.com
11226 South Shore Rd. (703) 787-0688 (H)
Reston, VA 20190 (703) 935-6720 (C)
--
C. Chan
GPG Public Key registered at pgp.mit.edu
tall, what user/password
are needed to connect to the Zmanda MySQL database, and which tables
should I run REPAIR on?
--
C. Chan
GPG Public Key registered at pgp.mit.edu
Linux ones.
--
C. Chan
GPG Public Key registered at pgp.mit.edu
nyway ? Buy a faster disk subsystem
? What kind of subsystem ?
--
C. Chan
GPG Public Key registered at pgp.mit.edu
Also Sprach Josef Wolf:
On Fri, Jul 28, 2006 at 12:42:50PM -0500, C. Chan wrote:
Well, that's the opposite of what I want. I want to generate
a list of the DLEs in disklist which DO NOT have ANY Lev 0s,
so I can force a level 0 for those particular DLEs during a run of amanda.
Please
Also Sprach jeffrey d anderson:
On Friday 28 July 2006 10:17, C. Chan wrote:
Related to Mr. Pearson's previous question:
Is there a quick way to determine which DLEs do not have any
Lev 0s on any tapes?
'amoverview' ought to provide that information.
Yes, that's what
u are looking for by
using amadmin:
amadmin ConfigName find
--
C. Chan
GPG Public Key registered at pgp.mit.edu
Related to Mr. Pearson's previous question:
Is there a quick way to determine which DLEs do not have any
Lev 0s on any tapes?
--
C. Chan
GPG Public Key registered at pgp.mit.edu
rts his rebuilt system has neither program. May not matter.
> Based on the amanda header, I suspect that backup/restore are the
> appropriate pair of programs, not ufsdump/ufsrestore.
>
> Do other AIX amanda installations use backup/restore?
>
> If so, what are appropriat
They use the rmt interface, which Amanda does not use.
The functionality needs to be in Amanda, not in the backup program.
star is worth supporting in Amanda because it preserves POSIX ACLs,
but star also needs to support incremental dumps to fit into the
Amanda way of doing things.
C. Ch
t; | | /\
> |-_|/ > Eric Siegerman, Toronto, Ont.[EMAIL PROTECTED]
> | | /
> When I came back around from the dark side, there in front of me would
> be the landing area where the crew was, and the Earth, all in the view
> of my window. I couldn't help but th
o incrementals. But star doesn't do incrementals
either, at least not yet - it's taken a big step forward by supporting inode
metadata. I don't know how well it handles XFS ACL information.
C. Chan <[EMAIL PROTECTED]>
GPG Public Key ( pgp.mit.edu | finger [EMAIL PROTECTED] )
"Lif is laene: eal sceaceth, leoht ond lif samod"
ea! :) )
>
The FedEx leprechauns might be satisfied with less.
> regards,
> --
> Paul JakmaSys Admin Alphyra
> [EMAIL PROTECTED]
> Warning: /never/ send email to [EMAIL PROTECTED] or [EMAIL PROTECTED]
>
C. Chan <[EMAIL PROTECTED]>
GPG Public Key ( pgp.mi
char devices, and Amanda 2.4.3 can do
RAID 1 tape mirroring with the RAIT driver. So you can maintain a
local backup stream and a remote mirrored backup stream at the
same time. If you have enough bandwidth.
C. Chan <[EMAIL PROTECTED]>
GPG Public Key ( pgp.mit.edu | finger [EMAIL PROTECT
wade through a potentially much larger
lev 0.
If you have lots of holding disk space you can dump everything
to holding disk, then just write lev 0's to tape. Keep the lev 1's
on disk until the end of the week, then flush the end of week lev 1's
to tape and delete the others.
C.
n't want the packing estimate
time to explode combinatorially, it takes long enough to back
up my terabytes over 100BaseT. Perhaps FNAL has enough
compute power to throw at it, but we don't. Not yet.
-
C. Chan <[EMAIL PROTECTED]>
GPG Public Key ( pgp.mit.edu | finger [EMAIL PROTECT
ourth and got:
ERROR: rait:{tape:/dev/nst2,tape:/dev/nst3,tape:/dev/nst4,null:}: reading
label: Numerical argument out of domain
C. Chan <[EMAIL PROTECTED]>
GPG Public Key ( pgp.mit.edu | finger [EMAIL PROTECTED] )
"Lif is laene: eal sceaceth, leoht ond lif samod"
itions (ie /var) ??
>
> Sure, but you have to use tar.
>
Some versions of dump such as IRIX/Linux xfsdump allow directory
backups which are a subset of the whole partition, but they can only do
lev 0's, no incrementals.
C. Chan <[EMAIL PROTECTED]>GPG Public Key register
; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> Planix, Inc. <[EMAIL PROTECTED]>; VE3TCP; Secrets of the Weird <[EMAIL PROTECTED]>
>
C. Chan <[EMAIL PROTECTED]>GPG Public Key registered at pgp.mit.edu
"Your Pithy Aphorism Here!" Or finger [EMAIL PROTECTED]
to where i can find a solution to my problem
> would be greatly appreciated
>
> thx
>
The SDT9000 is a narrow device, I noticed that you have it on a wide
bus. Is it the last device in the chain and are the 18 pins properly
terminated?
Also check the drive jumpers, sometimes you need
rage Area Network technologies.
Then again I make the same mistake ( B vs b ) all the time, but
that's because, uh, my shift key sticks. Yeah, that's it.
C. Chan <[EMAIL PROTECTED]>GPG Public Key registered at pgp.mit.edu
"Your Pithy Aphorism Here!" Or finger [EMAIL PROTECTED]
and queuing are going into the Serial
ATA spec. One wonders whether at some point Serial ATA and SCSI will
merge altogether.
In addition there will be cluster/SAN filesystems to take advantage
of the storage pooling, including open source projects like OpenGFS.
C. Chan <[EMAIL PROTECTED]&
n what do you do? Take
> your machine down so you can spend another couple hundred bucks sticking
> on a new one?
>
I would imagine it is no more difficult than using the RAID controller
management software to take the disk set offline and swap in the
next disk set and bringing it online.
C. Chan <[EMAIL PROTECTED]>GPG Public Key registered at pgp.mit.edu
"Your Pithy Aphorism Here!" Or finger [EMAIL PROTECTED]
that backs up a whole filesystem without trashing the read
> dates on files - and in much less time.
>
In particular, trying to do incremental backups using a file level
util on partitions with files that continually grow like mail spools
or syslogs.
--
C. Chan <[EMAIL PROTECTED]>
GPG Public Key: finger [EMAIL PROTECTED]
incremental
backup/restore mode. Being limited to nothing but full backups is
a bit limiting. star does have a diff mode so perhaps it could
made to do lev 1 backups.
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
t a striped rather than mirrored
backup?
Also, how does one recover from a RAIT set? Can amrestore be used
or does one have to use amdd?
If both striping with parity, w/o parity, and mirroring are
to be supported, perhaps rait0:, rait1:, and rait3: rather than
rait: would be clearer in amanda.conf.
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
erhaps it is so simple it doesn't require one. Syncsoft's backup util
for Windows NT/2000 claims it can backup live filesystems without
file corruption - does NTFS have such an API?
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
an "dump").
> Especially avoid dump if you're running 2.4.0-2.4.4 SMP kernels. See
> http://lwn.net/2001/0503/kernel.php3
>
Any idea if this is still an issue on the 2.4.18+ kernels?
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
Also Sprach Marc W. Mengel:
> > On Mon, 1 Apr 2002, C. Chan wrote:
> >
> > > Is there currently a way to back up to two or more tape drives simultaneously
> > > using the same Amanda config?
> >
> In 2.4.3 (currently in beta) you can stripe a backup accross
s simultaneously
using the same Amanda config?
I saw the RAIT code in 2.4.3beta, but I'm not interested in the
RAID-like features (parity, mirroring, striping).
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
|
> >.---.
> >|"Duct tape is like the force. It has a light side, |
> >| and a dark side, and it holds the universe together." |
> >| -Carl Zwanzig |
> >| |
> >|
I see that Amanda in 2.4.3 has features to allow backup to disk instead
of tape.
Is it possible now, using the same configuration (amanda.conf,
disklist, and tapelist) to tell amanda to perform lev 1+ dumps to disk and
lev 0 dumps to tape?
--
C. Chan < [EMAIL PROTECTED] >
PGP Publ
r otherwise damage the tape.
Same for DDS3 media. So file this thought under "VERY BAD IDEAS"
and forget it.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
e."
> -Michael T. Fry
>
There is a posting re. using GPG and a shell wrapper around
gzip to secure the data transport in Amanda if not the authentication,
look for a post from Judith Freeman <[EMAIL PROTECTED]> in
the archives, and also see
http://security.uchicago.e
d. It is solved in IRIX 6.5.12.
xfsdump/xfsrestore will work OK with mt/rmt but if you
pipe directly to a remote tape or holding disk which is
what Amanda does, amrestore piped into xfsrestore will
fail with file offset errors. You can patch to 6.5.12 to
fix the problem, or use a hex editor to edi
Also Sprach Joshua Baker-LePain:
> On Fri, 6 Jul 2001 at 10:37pm, C. Chan wrote
>
> > In short there is no simple answer.
> >
> Exactly. Let me add one more thing to consider, and that is vendor
> reliability.
This might be better described as vendor viability - how li
ace constrained operations.
In short there is no simple answer.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
a Wide card with a DDS4 drive is a good idea. In fact even
if one buys DDS3 drive I'd go with the Wide controller and an
adapter since going from Wide to Narrow is less hazardous than
Narrow to Wide, and the likelihood is that you'll junk the
DDS3 drives in a year for a larger capacity drive,
- controllers do fail. If not, return it and get a
cheap Adaptec PCI controller, since Adaptec is the standard in
compatibility.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
hard disk technology,
we're looking at 300-400GB in a single 3.5" half-height drive within
the next couple of years. Even a SuperDLT autoloader will start
getting stressed. I really hope that someone comes up with a viable affordable
r/w optical tape format soon or that the cost of S
LR100 is much less than $3K US, making it
stiff competition against both 8mm and DLT. I wonder why SLR isn't
better known or more commonly used.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
are fixed. On the other hand, the Ecrix packet
write technology helps to overcome some of these problems for 8mm formats.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
startup time 8927.065
INFO taper tape XYZ_DailySetA20 kb 0 fm 0 [OK]
FINISH driver date 20010519 time 8927.216
...
Any ideas where to look in planner.c or what Linux kernel
parameters may be relevant?
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
Also Sprach Anthony A. D. Talltree:
> >Yikes! A troll!
>
> Nope, just a naked emperor.
>
No, a nakked emperor penguin.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
ompiled, but I find this rather inelegant.
I plan to make a JFS partition as well, so this machine will
have multiple dumps, and I'd like to be able to specify which dump to
use for a filesystem in my amanda.conf file.
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
r 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 xfsdum
be trusted anyway.
Does the above also apply to XFS and the xfsdump/xfsrestore
port from IRIX to Linux?
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
ix or NT. I suppose they have some way of write-locking files,
copy to memory, then releasing the lock, but how could these utils
work at the block rather than file level?
--
C. Chan < [EMAIL PROTECTED] >
Finger [EMAIL PROTECTED] for PGP public key.
loppy tape drive but I don't know if that's any good.
You can get used/refurb DDS2 drives for under $300; DDS media
is very cheap per megabyte. Travan and OnStream are alternatives
but their media cost is higher and the cartridges bulkier.
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
Also Sprach C. Chan:
> > You fudge the length up from what you think it will do native based
> > on the amount of compression you expect to get. And here's a tip --
> > **nobody** gets double :-). I typically see 20-35%.
> >
> > >brad
> >
> &
see 20-35%.
>
> >brad
>
> John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
>
Thanks to the increase in JPEG, MPEG, and MP3 files I would expect
that in the near future turning on compression, hardware or software,
will actually cause the size of the backups.
--
the large differnce in filemarks a problem?
>
>
> Thanks
> brad
>
In the www.ecrix.com site under tech support there are
utils for Linux, Solaris, and Windows to manipulate the
tape drive settings. I set favor capcity over speed and
turned compression on but because my data is a mix o
ount me in for the beta. Is it available as a patch against 2.4.2 or
only via a CVS checkout?
--
C. Chan < [EMAIL PROTECTED] >
PGP Public Key: finger [EMAIL PROTECTED]
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