Re: RELENG_5, snapshots and disk lock time

2005-04-01 Thread Kris Kennaway
On Thu, Mar 31, 2005 at 06:32:27PM -0800, Dave Knight wrote: That document also says: As is detailed in the operational information below, snapshots are definitely alpha-test code and are NOT yet ready for production use. Is this the current opinion of snapshots ? Not really, you just have

Re: RELENG_5, snapshots and disk lock time

2005-03-31 Thread Dave Knight
On Mon, Mar 07, 2005 at 11:58:02AM -0500, Paul Mather wrote: On Mon, 2005-03-07 at 15:21 +0300, Dmitry Morozovsky wrote: Dear colleagues, dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I found that during mksnap_ffs file system is unresponsible even for reading for

RELENG_5, snapshots and disk lock time

2005-03-07 Thread Dmitry Morozovsky
Dear colleagues, dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I found that during mksnap_ffs file system is unresponsible even for reading for more than 3 minutes (it's on modern SATA disk with 50+ MBps linear transfer). Is it normal? Sincerely, D.Marck

Re: RELENG_5, snapshots and disk lock time

2005-03-07 Thread Dmitry Morozovsky
On Mon, 7 Mar 2005, Xin LI wrote: XL dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I XL found that during mksnap_ffs file system is unresponsible even for reading for XL more than 3 minutes (it's on modern SATA disk with 50+ MBps linear transfer). XL Is it

Re: RELENG_5, snapshots and disk lock time

2005-03-07 Thread Dmitry Morozovsky
Following up to myself DM XL dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I DM XL found that during mksnap_ffs file system is unresponsible even for reading for DM XL more than 3 minutes (it's on modern SATA disk with 50+ MBps linear transfer). DM XL Is it

Re: RELENG_5, snapshots and disk lock time

2005-03-07 Thread Xin LI
2005-03-07 18:00 +0300Dmitry Morozovsky On Mon, 7 Mar 2005, Xin LI wrote: Well, as I said, it was even for read access. I checked this with the simple shell script #!/bin/sh while true; do sleep 5 date ls /lh/.snap done when dump -L executes mksnap_ffs for

Re: RELENG_5, snapshots and disk lock time

2005-03-07 Thread Paul Mather
On Mon, 2005-03-07 at 15:21 +0300, Dmitry Morozovsky wrote: Dear colleagues, dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I found that during mksnap_ffs file system is unresponsible even for reading for more than 3 minutes (it's on modern SATA disk with 50+

Re: RELENG_5, snapshots and disk lock time

2005-03-07 Thread Kris Kennaway
On Mon, Mar 07, 2005 at 11:58:02AM -0500, Paul Mather wrote: On Mon, 2005-03-07 at 15:21 +0300, Dmitry Morozovsky wrote: Dear colleagues, dumping the snapshot of 140G ufs2 fyle system under contemporary RELENG_5 I found that during mksnap_ffs file system is unresponsible even for