search for: tcq

...w says). Is HTB qdisc within HTB qdisc is valid on newer kernels? If yes, what is wrong in this setup? This setup works fine when I use one HTB qdisc and many classes within classes. How it looks like: ------------------------------------------------------------------------------ ### lan0 ### tcq="tc qdisc add dev lan0" tcc="tc class add dev lan0" $tcq root handle 10: htb $tcc parent 10: classid 10:1 htb rate 100000Kbit # LAN $tcc parent 10:1 classid 10:10 htb rate 80000Kbit ceil 100000Kbit prio 7 $tcq parent 10:10 sfq limit 50 perturb 1 # from wan0 $tcc parent 10:1...

Hi, I am trying to do some simple ingress limiting based on fwmark. I know the ability and sense to do INGRESS limiting is ehm... limited ;-) but still I want to try it. I tried several things. === 1 === tcq ingress handle ffff: tcf parent ffff: protocol ip prio 1 handle 1 fw police rate 12mbit burst 10k drop tcf parent ffff: protocol ip prio 1 handle 2 fw police rate 10mbit burst 10k drop tcf parent ffff: protocol ip prio 1 handle 3 fw police rate 1mbit burst 10k drop This installs OK, but the filt...

...ld in CDB */ +#define SENSE_INVALID_FIELD 0x052400 +/* Illegal request, LUN not supported */ +#define SENSE_LUN_NOT_SUPPORTED 0x052500 + typedef struct SCSIBus SCSIBus; typedef struct SCSIDevice SCSIDevice; typedef struct SCSIDeviceInfo SCSIDeviceInfo; @@ -49,7 +66,7 @@ struct SCSIBus { int tcq, ndev; scsi_completionfn complete; - SCSIDevice *devs[8]; + SCSIDevice *devs[128]; }; void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, @@ -63,5 +80,6 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus...

...ld in CDB */ +#define SENSE_INVALID_FIELD 0x052400 +/* Illegal request, LUN not supported */ +#define SENSE_LUN_NOT_SUPPORTED 0x052500 + typedef struct SCSIBus SCSIBus; typedef struct SCSIDevice SCSIDevice; typedef struct SCSIDeviceInfo SCSIDeviceInfo; @@ -49,7 +66,7 @@ struct SCSIBus { int tcq, ndev; scsi_completionfn complete; - SCSIDevice *devs[8]; + SCSIDevice *devs[128]; }; void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, @@ -63,5 +80,6 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus...

...ches for journaled filesystems. Has anyone done any benchmarks concerning write cache and journaling? o And one totally different :-) question: Has anyone benchmarked fs performance on PATA IDE disks vs. otherwise comparable SCSI or SATA disks (I vaguely recall having read that SATA has working TCQ, i.e. not broken by design as with PATA)? I have read a few times that SCSI disks perform much better than IDE disks. The usual reason given is "SCSI disks are built for servers, IDE for desktops". Is this all, or is it TCQ that matters? Or is the Linux SCSI core better than the IDE core...

...nsertions(+), 286 deletions(-) diff --git a/block.c b/block.c index 33f3d65..06f92c4 100644 --- a/block.c +++ b/block.c @@ -930,6 +930,21 @@ int bdrv_is_sg(BlockDriverState *bs) return bs->sg; } +void bdrv_set_sg(BlockDriverState *bs, int set) +{ + bs->sg = set; +} + +int bdrv_get_tcq(BlockDriverState *bs) +{ + return bs->tcq; +} + +void bdrv_set_tcq(BlockDriverState *bs, int set) +{ + bs->tcq = set; +} + int bdrv_enable_write_cache(BlockDriverState *bs) { return bs->enable_write_cache; diff --git a/block.h b/block.h index a966afb..7862fa0 100644 --- a/bloc...

...nsertions(+), 286 deletions(-) diff --git a/block.c b/block.c index 33f3d65..06f92c4 100644 --- a/block.c +++ b/block.c @@ -930,6 +930,21 @@ int bdrv_is_sg(BlockDriverState *bs) return bs->sg; } +void bdrv_set_sg(BlockDriverState *bs, int set) +{ + bs->sg = set; +} + +int bdrv_get_tcq(BlockDriverState *bs) +{ + return bs->tcq; +} + +void bdrv_set_tcq(BlockDriverState *bs, int set) +{ + bs->tcq = set; +} + int bdrv_enable_write_cache(BlockDriverState *bs) { return bs->enable_write_cache; diff --git a/block.h b/block.h index a966afb..7862fa0 100644 --- a/bloc...

I''m building another 24-bay rackmount storage server, and I''m considering what drives to put in the bays. My chassis is a Supermicro SC846A, so the backplane supports SAS or SATA; my controllers are LSI3081E, again supporting SAS or SATA. Looking at drives, Seagate offers an enterprise (Constellation) 2TB 7200RPM drive in both SAS and SATA configurations; the SAS model offers

...A6 media RPM non-rotating Feature Support Enabled Value Vendor read ahead yes yes write cache yes yes flush cache yes yes overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) yes 32 tags SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management yes yes 254/0...

Recently, I''ve been reading through the ZIL/slog discussion and have the impression that a lot of folks here are (like me) interested in getting a viable solution for a cheap, fast and reliable ZIL device. I think I can provide such a solution for about $200, but it involves a lot of development work. The basic idea: the main problem when using a HDD as a ZIL device are the cache flushes

I'm trying to improve the setup of our Dovecot/Exim mail servers to handle the increasingly huge accounts (everybody thinks it's like infinitely growing storage like gmail and stores everything forever in their email accounts) by changing from Maildir to mdbox, and to take advantage of offloading older emails to alternative networked storage nodes. The question now is whether having a

Hi, my oi151 based home NAS is approaching a frightening "drive space" level. Right now the data volume is a 4*1TB Raid-Z1, 3 1/2" local disks individually connected to an 8 port LSI 6Gbit controller. So I can either exchange the disks one by one with autoexpand, use 2-4 TB disks and be happy. This was my original approach. However I am totally unclear about the 512b vs 4Kb issue.

...DMA2 UDMA6 media RPM 7200 Feature Support Enabled Value Vendor read ahead yes yes write cache yes yes flush cache yes yes overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) yes 32 tags SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management no no automatic...

Sep 21 08:57:54 belle fsck: /dev/ad4s1d: 1 DUP I=190 Sep 21 08:57:54 belle fsck: /dev/ad4s1d: UNEXPECTED SOFT UPDATE INCONSISTENCY; RUN fsck MANUALLY. Ok, so I ran fsck manually (even with -y), but yet it refuses to clear/fix whatever to the questions posed as fsck runs. What does this all mean? Thanks, -Clint -- This message has been scanned for viruses and dangerous content by MailScanner,

I am having problems with silent data corruption on (some) drives connected to an MCP55 SATA controller. I have two servers, both running RELENG_7_0/amd64. One has the 570 Ultra chipset, the other has 570 SLI. Both chipsets have the MCP55 SATA controller. The server with 570 Ultra chipset has a bunch of older 250GB SATA-150 drives hooked up to the MCP55 controller and it is working just fine.

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Hello list. I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without modifications. How did I try it? Created a (non-root) build environment (not a mock ) Installed the kernel.scr.rpm and did a rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee prep-out.log The build failed at the end: Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL Checking