W dniu 14 kwietnia 2011 15:59 użytkownik Eric Sandeen <sandeen@xxxxxxxxxx> napisał: > On 4/14/11 8:50 AM, Michał Piotrowski wrote: >> W dniu 14 kwietnia 2011 15:42 użytkownik Eric Sandeen >> <sandeen@xxxxxxxxxx> napisał: > > > ... > > >>> What kind of SSD is it? >> >> OCZ Vertex 2 with firmware 1.25 (this is not the latest version, but I >> did not have too much courage to update it :)) > > Ok. We (the ext4 list) had a report a year ago or so where someone had really debugged some odd behavior with one ssd and its firmware, but not this one :) > > So not the same thing exactly, at least. > >> [ 1.548188] ata3.00: ATA-8: OCZ-VERTEX2, 1.25, max UDMA/133 >> [ 1.548196] ata3.00: 97696368 sectors, multi 16: LBA48 NCQ (depth 0/32) >> [ 1.586184] ata3.00: configured for UDMA/133 >> [ 1.586599] scsi 2:0:0:0: Direct-Access ATA OCZ-VERTEX2 >> 1.25 PQ: 0 ANSI: 5 >> [ 1.587295] sd 2:0:0:0: Attached scsi generic sg0 type 0 >> [ 1.587354] sd 2:0:0:0: [sda] 97696368 512-byte logical blocks: >> (50.0 GB/46.5 GiB) >> [ 1.587835] sd 2:0:0:0: [sda] Write Protect is off >> [ 1.587844] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00 >> >> So far, I have not any problems with this drive (not counting not >> working S.M.A.R.T. log). >> >>> SSDs being rather new beasts, with various different firmware implementations.... it's also possible that a barrier was ignored, etc... but hard to say. >> >> Do the barriers are somehow dependent on the hardware? Maybe I need to >> look in the SSD documentation to find out if proper commands are >> supported? > > I don't think you'll find that sort of thing; it's a question of implementing the spec properly, really. All I meant is that it is -possible- for hardware to be broken or noncompliant, so it's -possible- that that's what you're seeing. I'm NOT saying that the OCZ-VERTEX2 -is- broken, just musing that the hardware needs to exhibit proper behavior as much as the application needs to issue the right data integrity syscalls. :) I think I'll try to update firmware on this drive over the weekend. When I read things like that in firmware release notes "Fixed rare corner case that could cause the drive to reset and clear user data" "Fixed a rare condition that could cause the drive to reset and clear the data" I begin to wonder if it was the right decision to change main drive to SSD :) Maybe it's time to start using data=journal > > -Eric > >>> >>> -Eric > -- Best regards, Michal http://eventhorizon.pl/ -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
