Re: [zfs-discuss] VMware client solaris 10, RAW physical disk and zfs snapshots problem - all created snapshots are equal to zero.
> I did those test and here are results: > > r...@sl-node01:~# zfs list > NAMEUSED AVAIL REFER MOUNTPOINT > mypool01 91.9G 136G23K /mypool01 > mypool01/storage01 91.9G 136G 91.7G /mypool01/storage01 > mypool01/storag...@30032010-1 0 - 91.9G - > mypool01/storag...@30032010-2 0 - 91.9G - > mypool01/storag...@30032010-3 2.15M - 91.7G - > mypool01/storag...@30032010-441K - 91.7G - > mypool01/storag...@30032010-5 1.17M - 91.7G - > mypool01/storag...@30032010-6 0 - 91.7G - > mypool02 91.9G 137G24K /mypool02 > mypool02/copies 23K 137G23K /mypool02/copies > mypool02/storage01 91.9G 137G 91.9G /mypool02/storage01 > mypool02/storag...@30032010-1 0 - 91.9G - > mypool02/storag...@30032010-2 0 - 91.9G - > > As you can see I have differences for snapshot 4,5 and 6 as you > suggested to make a test. But I can see also changes on snapshot no. 3 > - I complain about this snapshot because I could not see differences > on it last night! Now it shows. Well, the first thing you should know is this: Suppose you take a snapshot, and create some files. Then the snapshot still occupies no disk space. Everything is in the current filesystem. The only time a snapshot occupies disk space is when the snapshot contains data that is missing from the current filesystem. That is - If you "rm" or overwrite some files in the current filesystem, then you will see the size of the snapshot growing. Make sense? That brings up a question though. If you did the commands as I wrote them, it would mean you created a 1G file, took a snapshot, and rm'd the file. Therefore your snapshot should contain at least 1G. I am confused by the fact that you only have 1-2M in your snapshot. Maybe I messed up the command I told you, or you messed up entering it on the system, and you only created a 1M file, instead of a 1G file? > What is still strange: snapshots 1 and 2 are the oldest but they are > still equal to zero! After changes and snapshots 3,4,5 and 6 I would > expect that snapshots 1 and 2 are "recording" also changes on the > storage01 file system, but not... could it be possible that snapshots > 1 and 2 are somehow "broken?" If some file existed during all of the old snapshots, and you destroy your later snapshots, then the data occupied by the later snapshots will start to fall onto the older snapshots. Until you destroy the oldest snapshot that contained that data. At which time, the data is truly gone from all of the snapshots. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] VMware client solaris 10, RAW physical disk and zfs snapshots problem - all created snapshots are equal to zero.
On Wed, Mar 31, 2010 at 4:01 AM, Edward Ned Harvey wrote: >> The problem that I have now is that each created snapshot is always >> equal to zero... zfs just not storing changes that I have made to the >> file system before making a snapshot. >> >> r...@sl-node01:~# zfs list >> NAME USED AVAIL REFER MOUNTPOINT >> mypool01 91.9G 137G 23K /mypool01 >> mypool01/storage01 91.9G 137G 91.7G /mypool01/storage01 >> mypool01/storag...@30032010-1 0 - 91.9G - >> mypool01/storag...@30032010-2 0 - 91.9G - >> mypool01/storag...@30032010-3 0 - 91.7G - >> mypool02 91.9G 137G 24K /mypool02 >> mypool02/copies 23K 137G 23K /mypool02/copies >> mypool02/storage01 91.9G 137G 91.9G /mypool02/storage01 >> mypool02/storag...@30032010-1 0 - 91.9G - >> mypool02/storag...@30032010-2 0 - 91.9G - > > Try this: > zfs snapshot mypool01/storag...@30032010-4 > dd if=/dev/urandom of=/mypool01/storage01/randomfile bs=1024k count=1024 > zfs snapshot mypool01/storag...@30032010-5 > rm /mypool01/storage01/randomfile > zfs snapshot mypool01/storag...@30032010-6 > zfs list > > And see what happens. > > I did those test and here are results: r...@sl-node01:~# zfs list NAMEUSED AVAIL REFER MOUNTPOINT mypool01 91.9G 136G23K /mypool01 mypool01/storage01 91.9G 136G 91.7G /mypool01/storage01 mypool01/storag...@30032010-1 0 - 91.9G - mypool01/storag...@30032010-2 0 - 91.9G - mypool01/storag...@30032010-3 2.15M - 91.7G - mypool01/storag...@30032010-441K - 91.7G - mypool01/storag...@30032010-5 1.17M - 91.7G - mypool01/storag...@30032010-6 0 - 91.7G - mypool02 91.9G 137G24K /mypool02 mypool02/copies 23K 137G23K /mypool02/copies mypool02/storage01 91.9G 137G 91.9G /mypool02/storage01 mypool02/storag...@30032010-1 0 - 91.9G - mypool02/storag...@30032010-2 0 - 91.9G - As you can see I have differences for snapshot 4,5 and 6 as you suggested to make a test. But I can see also changes on snapshot no. 3 - I complain about this snapshot because I could not see differences on it last night! Now it shows. The only difference is that I have made since yesterday is system restart. What is still strange: snapshots 1 and 2 are the oldest but they are still equal to zero! After changes and snapshots 3,4,5 and 6 I would expect that snapshots 1 and 2 are "recording" also changes on the storage01 file system, but not... could it be possible that snapshots 1 and 2 are somehow "broken". Anyway this is the first time that I saw strange snapshot behaving, ok it's true that my configuration win7 / vmplayer / sol10 / zpool on phisical disk can be the main reason, but anyway I'm confused that sometimes snapshot "recording" is working (as I have for 3,4,5 and 6) and sometimes not as I have for snapshot 1 and 2. With hardware Solaris and zpools I didn't have this strange snapshot behaving. Definitely something blocked snapshots 1 and 2 to work correctly or? I will monitor and play with it next days... Many thanks to Richard Jahnel and Edward Ned Harvey! Regards, Vladimir ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] VMware client solaris 10, RAW physical disk and zfs snapshots problem - all created snapshots are equal to zero.
> The problem that I have now is that each created snapshot is always > equal to zero... zfs just not storing changes that I have made to the > file system before making a snapshot. > > r...@sl-node01:~# zfs list > NAME USED AVAIL REFER MOUNTPOINT > mypool01 91.9G 137G 23K /mypool01 > mypool01/storage01 91.9G 137G 91.7G /mypool01/storage01 > mypool01/storag...@30032010-1 0 - 91.9G - > mypool01/storag...@30032010-2 0 - 91.9G - > mypool01/storag...@30032010-3 0 - 91.7G - > mypool02 91.9G 137G 24K /mypool02 > mypool02/copies 23K 137G 23K /mypool02/copies > mypool02/storage01 91.9G 137G 91.9G /mypool02/storage01 > mypool02/storag...@30032010-1 0 - 91.9G - > mypool02/storag...@30032010-2 0 - 91.9G - Try this: zfs snapshot mypool01/storag...@30032010-4 dd if=/dev/urandom of=/mypool01/storage01/randomfile bs=1024k count=1024 zfs snapshot mypool01/storag...@30032010-5 rm /mypool01/storage01/randomfile zfs snapshot mypool01/storag...@30032010-6 zfs list And see what happens. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] VMware client solaris 10, RAW physical disk and zfs snapshots problem - all created snapshots are equal to zero.
what size is the gz file if you do an incremental send to file? something like: zfs send -i sn...@vol sn...@vol | gzip > /somplace/somefile.gz -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] VMware client solaris 10, RAW physical disk and zfs snapshots problem - all created snapshots are equal to zero.
I'm running Windows 7 64bit and VMware player 3 with Solaris 10 64bit as a client. I have added additional hard drive to virtual Solaris 10 as physical drive. Solaris 10 can see and use already created zpool without problem. I could also create additional zpool on the other mounted raw device. I can also synchronize zfs file system to other physical disk and the other zpool with zfs send/receive. All those physical disks are presented in Windows 7 and not initialized. The problem that I have now is that each created snapshot is always equal to zero... zfs just not storing changes that I have made to the file system before making a snapshot. Before each snapshot I have added or deleted different files, so the snapshot should archive those differences but this is not my case. :-( My zfs list looks now like this: r...@sl-node01:~# zfs list NAME USED AVAIL REFER MOUNTPOINT mypool01 91.9G 137G 23K /mypool01 mypool01/storage01 91.9G 137G 91.7G /mypool01/storage01 mypool01/storag...@30032010-1 0 - 91.9G - mypool01/storag...@30032010-2 0 - 91.9G - mypool01/storag...@30032010-3 0 - 91.7G - mypool02 91.9G 137G 24K /mypool02 mypool02/copies 23K 137G 23K /mypool02/copies mypool02/storage01 91.9G 137G 91.9G /mypool02/storage01 mypool02/storag...@30032010-1 0 - 91.9G - mypool02/storag...@30032010-2 0 - 91.9G - As you can see each snapshot is equal to zero besides changes that I have made to zfs content. I would like to understand what is making virtual Solaris 10 impossible to track those changes with creating a snapshot? Is it problem with Windows, VMware player or basically with mounted raw device to virtual machine? Does someone has experinace with this issue? Regards, Vladimir ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
