search for: 4kb

Hi, I'm trying to get syslinux (extlinux actually) work with 4kb disks. I got a bios with 4kb support but seems that extlinux does not work at all. In extlinux/main.c SECTOR_SIZE and SECTOR_SHIFT are constants to 512 bytes and also there are a lot of checks in different places (like in syslinux_check_bootsect). Currently I'm trying it to work using GPT and...

...nt to encode all the sound files that I have (probably over a 100) with Ogg Vorbis. Most of these sound files are really small, about 3 - 6kb each. Each sound file contains a word, i.e. "cat", "bat". When I encoded some of them I noticed that the ogg file is never smaller than 4kb, even if the original wav file was less than 4kb. I saw in the libogg documentation that an ogg page is typically 4kb. So I'm assuming that because of that, the smallest a file can ever be is always 4kb. Is there any overhead that can be removed during the encoding or is there a setting that...

Good evening, I understand that NTFS & VMDK do not relate to Solaris or ZFS, but I was wondering if anyone has any experience of checking the alignment of data blocks through that stack? I have a VMware ESX 4.0 host using storage presented over NFS from ZFS filesystems (recordsize 4KB). Within virtual machine VMDK files, I have formatted NTFS filesystems, block size 4KB. Dedup is turned on. When I run ZDB -DD, i see a figure of unique blocks which is higher than I expect, which makes me wonder whether any given 4KB in the NTFS filesystem is perfectly aligned with a 4KB block in...

Hi, I wanted to implement some QOS on my Linux Box with HTB, but after some time spend on the configuration and tests, I still don''t manage to have some correct results. Here are the details : -ROOT 2000 kbits -HIGHPRIO SUBCLASS 50 kbits prio 0 -SUBCLASS1 750 kbits prio 1 -SERVICE1 250 kbits prio 1

Hello again. Do any of you have one of the 'new' HDDs with 4kB Sectors currently in use? I would upgrade to the 4kB disks but I don't know if this might be problematic as I intend to use ZFS w/ RAIDz or at least a classic RAID6. How might this affect performance under 5.5 and how do I go about setting up the alignment of the partitions I use? Kind regards...

From: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Scrubing supers is not in a transaction context, when trying to write supers to disk, we should check if we are trying to scrub supers.Fix it. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> --- fs/btrfs/disk-io.c | 2 ++ fs/btrfs/transaction.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/fs/btrfs/disk-io.c

...ot sure whether this is triggered by Thunderbird or done regularly, but it takes longer when the server is loaded, so sometimes it seems that it is scanning continuously. Since it takes around 2000 getdents64() syscalls to scan my inbox, I'm wondering whether the buffer size is a bit small with 4KB and might benefit from being configurable: ... getdents64(8, /* 73 entries */, 4096) = 4088 getdents64(8, /* 73 entries */, 4096) = 4088 getdents64(8, /* 73 entries */, 4096) = 4088 getdents64(8, /* 73 entries */, 4096) = 4088 getdents64(8, /* 73 entries */, 4096) = 4088 ... (strace out...

So, what is the story about 4KB disk sectors? Should such disks be avoided with ZFS? Or, no problem? Or, need to modify some config file before usage? -- This message posted from opensolaris.org

Hi - Updated my old project named "ext3carve" and renamed it as "extcarve" . It uses libext2fs. (To be precise,re-uses on 'debugfs' command's "dump_unused" feature) In summary,the tool will do the following - It will scan the linux machine ,for unused/deleted blocks and search for magic signatures. If it finds valid signature (both header and footer) It

The attached file is the super page patch which supports both 2MB and 4MB (depending on the paging modes of hypervisor) under hardware assisted paging. The idea is to allocate super pages when guests are being created. Whenever such requests cannot be satisfied, it falls back to normal 4KB allocation. Also it splits large pages into normal 4KB pages whenever necessary. This patch is applicable on the latest xen-unstable tree. Any comment/suggestion is welcomed! Since it also touches a small portion of IA64 and PowerPC code, I would appreciate the information of whether this patch...

...active_laundry: 0, inactive_clean: 0, free: 3790 ) Dec 7 19:52:43 gcclo77 kernel: aa:0 ac:0 id:0 il:0 ic:0 fr:2927 Dec 7 19:52:43 gcclo77 kernel: aa:157445 ac:1554 id:301 il:0 ic:0 fr:737 Dec 7 19:52:43 gcclo77 kernel: aa:2791 ac:569 id:1 il:0 ic:0 fr:126 Dec 7 19:52:43 gcclo77 kernel: 3*4kB 2*8kB 4*16kB 3*32kB 4*64kB 2*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 2*4096kB = 11708kB) Dec 7 19:52:43 gcclo77 kernel: 49*4kB 0*8kB 0*16kB 0*32kB 1*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 2948kB) Dec 7 19:52:43 gcclo77 kernel: 0*4kB 1*8kB 1*16kB 1*32kB 1*64kB 1*128kB 1*256kB...

...atch 16 Aug 30 15:46:20 crmdb kernel: Aug 30 15:46:20 crmdb kernel: Free pages: 16000kB (2560kB HighMem) Aug 30 15:46:20 crmdb kernel: Active:1433949 inactive:40363 dirty:1 writeback:0 unstable:0 free:4 000 slab:24910 mapped:1405036 pagetables:565097 Aug 30 15:46:20 crmdb kernel: DMA free:12544kB min:16kB low:32kB high:48kB active:0kB inactive:0k B present:16384kB pages_scanned:1878896 all_unreclaimable? yes Aug 30 15:46:20 crmdb kernel: protections[]: 0 0 0 Aug 30 15:46:20 crmdb kernel: Normal free:896kB min:928kB low:1856kB high:2784kB active:736kB ina ctive:208kB present:901120kB pages_s...

...handle 30 fw classid 1:30 iptables -t mangle -A POSTROUTING -d 192.168.2.1/32 -j MARK --set-mark 12 iptables -t mangle -A POSTROUTING -d 192.168.2.1/32 -p tcp --sport 22 -j MARK --set-mark 30 This all goes into the right classes, but when i do a download from the mailserver, im suppose to get 4Kb, and it starts at 5Kb , which is burst, and then move down towards 4kb then 3kb and stays around there, but never goes to 4 on the dot. Is this normal or should it be perfectly 4Kb/s ? Am i doing something wrong? Thanks Jandre -- Regards Jandre "Some people are alive only because...

..._anon:24125 isolated_anon:0 active_file:651188 inactive_file:665467 isolated_file:0 unevictable:8 dirty:87 writeback:0 unstable:0 slab_reclaimable:334053 slab_unreclaimable:14431 mapped:105321 shmem:34094 pagetables:8218 bounce:0 free:14592 free_pcp:30 free_cma:0 DMA free:15888kB min:20kB low:24kB high:28kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15980kB managed:15896kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:0kB un...

...cked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes kernel: lowmem_reserve[]: 0 1948 56488 56488 kernel: Node 0 DMA32 free:218864kB min:1048kB low:1308kB high:1572kB active_anon:97264kB inactive_anon:32512kB active_file:29592kB inactive_file:1492496kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1995492kB mlocked:0kB dirty:13532kB writeback:142000kB mapped:40kB shmem:0kB slab_reclaimable:22544kB slab_unreclaima...

...server1 kernel: Free pages: 49280kB (49280kB HighMem) Feb 4 00:08:23 server1 kernel: Active:28662 inactive:196240 dirty:60 writeback:0 unstable:0 free:12320 slab:11019 mapped:9351 pagetables:253 Feb 4 00:08:23 server1 kernel: DMA free:0kB min:16kB low:32kB high:48kB active:36kB inactive:12184kB present:16384kB pages_scanned:0 all_unreclaimable? no Feb 4 00:08:23 server1 kernel: protections[]: 0 0 0 Feb 4 00:08:23 server1 kernel: Normal free:0kB min:936kB low:1872kB high:2808kB active:93152kB inactive:747560kB present:901120kB pages_scanned:0 all_unreclaimable? no Feb 4 00:08:23 server1...

Attached are the patches to support super page with EPT. We only support 2M size. And shadow may still work fine with 4K pages. The patches can be split into 3 parts. Apply order is as attached. tool.diff To allocate 2M physical contiguous memory in guest except the first 2M and the last 2M. The first 2M covers special memory, and Xen use the last few pages in guest memory to do special

We have DELL 2650 server and I found recently /var/log/messages have following messages continue pop-up: =========================================== Dec 3 15:47:06 HOST1 kernel: Free pages: 17816kB (1664kB HighMem) Dec 3 15:47:06 HOST1 kernel: Active:7463815 inactive:656000 dirty:0 writeback:0 unstable:0 free:4454 slab:119979 mapped:730440 pagetables:63277 Dec 3 15:47:06 HOST1 kernel: DMA free:12448kB min:64kB low:128kB high:192kB active:0kB inactive:0kB present:16384kB pages_scanned:0 all_unreclai...

zdb -C shows an shift value on each vdev in my pool, I was just wondering if it is vdev specific, or pool wide. Google didn''t seem to know. I''m considering a mixed pool with some "advanced format" (4KB sector) drives, and some normal 512B sector drives, and was wondering if the ashift can be set per vdev, or only per pool. Theoretically, this would save me some size on metadata on the 512B sector drives. Cheers, -------------- next part -------------- An HTML attachment was scrubbed... URL: <...

...is: if I do exactly the same procedure on a flash > disk (4GB) and then a dd from the flash disk to the sata sdd, then the > sata SSD boots. > > > The physical sector size of the sata ssd is 4k, but the logical is > 512. Could this be the problem? > > Thanks Yes, the 4KB sector size is most probably the problem. Some users are able to workaround the issue by connecting the drive in different manners (e.g. eSATA vs. SATA vs. USB, through external cases...) or by using loop devices / losetup. Some users have luck with one connection, some users succeed with a di...